Netflix
Netflix, Inc.
Clips on the outer screen, cinema on the inner one, redesigned for iPhone Duo.
Launch partner: Named by Apple as an iPhone Duo launch partner.
- Closed
- Open
- Book
- Standing
Apple's first foldable iPhone — a 5.4″ outer display that opens into a 7.6″ inner display. Here's everything that's been adapted for it so far.
iPhone Duo is a book-style foldable: closed, it is a compact 5.4″ iPhone; open, it becomes a 7.6″ landscape canvas with a near-invisible crease. iOS 27 adds Split View for two apps side by side, moves toolbar controls to the side of the display, and nudges interactive elements away from the fold when the device is partly closed.
Apple announced it on September 9, 2026, opened pre-orders on October 16 and put it on sale on October 23 in the US and more than 70 other countries and regions, from $1,999. Supply is tight: TNW reported that US delivery estimates “moved to January minutes after preorders opened on 16 October”.
Closed1398 × 2034
Open2670 × 1878
1040 shown
Netflix, Inc.
Clips on the outer screen, cinema on the inner one, redesigned for iPhone Duo.
Launch partner: Named by Apple as an iPhone Duo launch partner.
Detail Technologies
On-device AI video creation, built on the new Core AI framework.
Launch partner: Named by Apple as an iPhone Duo launch partner.
Slack Technologies
More of Slack and more of your messages on screen at once when iPhone Duo opens.
Launch partner: Named by Apple as an iPhone Duo launch partner.
Zoom Communications
Shared content and every face on the call, side by side on the inner display.
Launch partner: Named by Apple as an iPhone Duo launch partner.
MWM
A DJ app with two decks open, library and mixer across the fold, and a tent mode
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo, with more room for two decks, audio effects and stem separation. MWM, the developer, describes the layouts on the edjing Mix iPhone Duo page and in a submission to FoldHunt on October 24, 2026. The App Store seller is MWM. The release notes for version 9.4.1 (released October 25, 2026) don't mention the Duo, and the Duo page's pictures are interface previews with placeholder track names.
SmartGym
Workout tracker with a layout for every pose, the routine and the exercise side by side
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 8.1 (released October 16, 2026) say: "SmartGym is ready for iPhone Duo, with an interface that adapts as you fold, unfold and move through your workout. EVERY POSE Enjoy layouts designed for every pose: Closed, Book Style, Fully Opened, Seated and Tent."
Cultured Code
Cultured Code's to-do app, with a sidebar of your lists when the Duo opens
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 3.25.1 (released October 22, 2026) say: "Things is ready for iPhone Duo! We’ve tailored the app for the new device, with a dynamic layout for all poses, a sidebar for your lists, and more."
Kingsoft Office
Kingsoft's office suite: more rows and columns open, and AI beside your document
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The China App Store release notes for version 26.10.1 (released October 23, 2026) describe full iPhone Duo support: navigation that changes with the fold, more of a spreadsheet on the open phone, several documents on screen, and AI beside a document.
Squircle Apps
A cassette player: open the Duo to load a tape, close it to start listening
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store seller is Squircle Apps LLP. Deck-Man came out on October 14, 2026, and its App Store description says it brings the look and feel of classic portable cassette players "to your iPhone Duo".
MLB Advanced Media
Baseball's official app: half folded, the live game above the fold and the stats below
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo, with a quote from MLB's Kenny Gersh. The App Store release notes for version 26.18.3 (released October 21, 2026) say: "We’ve optimized the MLB app for iPhone Duo, introducing a redesigned tab bar along with dynamic Live Activities and scoreboard layouts adapted for every orientation."
Resolution Games
Classic arcade games in one Apple Arcade collection, for each way you hold the Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The game is on Apple Arcade. The App Store release notes for version 1.15 (released October 22, 2026) say: "Retrocade now supports the different ways to play on iPhone Duo!"
RAC7 Games
The Apple Arcade sasquatch game, immersive open and pick-up-and-play closed
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store seller is Apple Inc.; the game is on Apple Arcade. The App Store release notes for version 2.2.1 (released October 23, 2026) say "The game now supports iPhone Duo".
Condor Digital
Tides at a glance closed; open, charts, weather and live radar in one view
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 27.1.2 (released October 24, 2026) say: "Meet Tide Guide for iPhone Duo! Check the tide at a glance, then unfold for a closer look at charts, weather, and solunar details. An all-new map puts real-time radar alongside your tide stations."
Tiimo
Visual planner: the day's plan on the cover, a timer beside your notes when propped up
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 3.70.1 (released October 21, 2026) don't mention the Duo.
Sina
Sina's microblog, with feeds, video and posting laid out for the open and half-folded Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The China App Store release notes for version 16.10.2 (released October 21, 2026) say Weibo is adapted for iPhone Duo.
Flexibits
Calendar and tasks from Flexibits, with calendars, tasks and menus together when open
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo, with a quote from Michael Simmons, Flexibits' CEO. Fantastical's App Store release notes for version 4.2.3, released October 13, 2026, say "Added support for iPhone Duo".
Amazon
Amazon's streaming service: half folded, the video above and X-Ray below
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 10.154 (released October 27, 2026) don't mention the Duo.
Craft Docs Limited
Notes and documents, with a style gallery beside a live preview when the Duo unfolds
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. Before that, Viktor Pali, a Craft co-founder, in a Bluesky post saying the team spent the summer getting Craft ready for day one on iPhone Duo (bsky.app). The team says it is still polishing. The screenshot is from the iPhone Duo simulator.
Bloop
Email client that shows your inbox and messages together on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 27.0.7 (released October 20, 2026) don't mention the Duo.
American Airlines
The airline's app, with boarding passes, seats and terminal maps within easy reach
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 2026.32 (released October 26, 2026) don't mention the Duo.
Gameloft
Gameloft's online racer, with more of the track on the large inner display
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo, with a quote from Gameloft's Raúl Orrego del Río. The App Store release notes for version 53.5.4 (released October 23, 2026) say: "Asphalt Legends now optimized for iPhone Duo!"
NAVER
An app for groups, with more room for posts, events and albums on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 31.1.0 (released October 22, 2026) don't mention the Duo.
Shiny Frog
Markdown notes and journal, with more of your notes on screen at once
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 3.0.3 (released October 22, 2026) don't mention the Duo.
Instagram's video editor, with the timeline, tools and video together on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 453.1 (released October 27, 2026) don't mention the Duo.
Flighty
Flight tracker with a tent mode that follows your flight hands-free
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 4.11.3 (released October 26, 2026) say: "Flighty is ready for iPhone Duo. During a flight, prop iPhone Duo up like a tent to follow your progress hands-free."
Kakao Entertainment
Comics, novels and books from Kakao, read like a book on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 7.34.2 (released October 22, 2026) list "Compatible with iPhone Duo".
Kakao
Korea's messenger, with your chats in view beside the conversation you're in
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 26.9.1 (released October 23, 2026) don't mention the Duo.
Lowe's
Home improvement shopping, with a closer look at finishes and materials when open
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 26.10.3 (released October 28, 2026) say: "The Lowe’s app now supports the iPhone Duo. Whether you’re checking an item on the go or opening up for a bigger view, our updated layouts make the most of your screen."
rewardStyle
Shop creators' picks, with their videos beside the products they feature
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 5.77.0 (released October 26, 2026) say: "LTK is now optimized for iPhone Duo, so you can move seamlessly between the outer and inner displays while discovering and shopping the creator recommendations you love."
Moises Systems
AI stem separation for practice, with the mix beside the lyrics and chords
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 2.152.0 (released October 27, 2026) don't mention the Duo.
NAVER WEBTOON
Korean webtoons and web novels, to read on the larger display of the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 26.102.0 (released October 22, 2026) don't mention the Duo.
Condor Digital
Golf GPS and scorecard, with larger course previews, stats and scorecards when open
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 27.1 (released October 22, 2026) say: "Updated and designed specifically for iPhone Duo! Explore larger course previews, browse spacious club profiles, and get a closer look at the fairways ahead."
ZIIKR
AI notes with handwriting, recordings and PDFs, together in one view on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 4.1.11 (released October 22, 2026) don't mention the Duo.
The New York Times
Recipes and videos, with more detail when the Duo sits half folded on the counter
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo, with a quote from Camilla Velasquez, NYT Cooking's general manager. The App Store release notes for version 4.173.1 (released October 22, 2026) don't mention the Duo.
OpenTable
Restaurant bookings, with details, availability and booking laid out for the Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 26.26.2 (released October 22, 2026) don't mention the Duo.
PGA Tour
The PGA Tour's official app, with live golf and leaderboards on the larger display
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 2026.4.1 (released October 21, 2026) list "Support for iPhone Duo".
Salesforce
The Salesforce CRM app, with more of your dashboards in view on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 264.010 (released October 23, 2026) don't mention the Duo.
Shopify
Shopify's shopping app, with more products in its feed in every pose
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 3.15.0 (released October 28, 2026) don't mention the Duo.
United Airlines
The airline's app, with its navigation on the right side of the open display
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 4.2.102 (released October 28, 2026) don't mention the Duo.
Vimosoft
Video editor with more of its controls and your footage on screen when open
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 15.0.3 (released October 27, 2026) say: "[Optimized for iPhone Duo] We’ve optimized the UI for a smoother experience on iPhone Duo."
NAVER WEBTOON
Webcomics, manga and manhwa, to read on the larger display of the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 26.101.0 (released October 19, 2026) don't mention the Duo.
Yelp
Local reviews, with the map and the reviews side by side on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 26.44.0 (released October 26, 2026) don't mention the Duo.
Fifth Star Labs LLC
A stargazing guide whose sky view widens as the phone unfolds
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 13.1 (released October 14, 2026) say Sky Guide is optimized for iPhone Duo and that the sky view widens as the phone unfolds.
Xmind
A mind-mapping app that puts the map and its outline side by side on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. Earlier, Xmind's co-founder Mango Du, in a post on X on October 11, 2026, with photos of Xmind on the open Duo, shown to Tim Cook (@mangodu on X). The App Store release notes for version 26.05.01106 (released October 19, 2026) describe the Duo update: in Foldable mode the Outliner and Mind Map sit side by side, multi-window support brings different documents into view, and toolbar controls are regrouped for the Duo. The App Store seller is Xmind Ltd. (id 1286983622).
AutoNavi
Maps and navigation from AutoNavi: portrait for the road ahead, landscape for the overview
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The China App Store release notes for version 17.2.2 (released October 28, 2026) say Amap fully supports iPhone Duo, with maps on the big screen.
iQIYI
Chinese streaming service, with more to browse and controls that adapt to each pose
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The China App Store release notes for version 17.10.3 (released October 23, 2026) say iQIYI is now adapted for iPhone Duo's folding screen, for a smoother big-screen experience.
Alibaba
Alibaba's marketplace: zoom to set how many items fit in a row, images beside details
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The China App Store release notes for version 10.68.10 (released October 27, 2026) don't mention the Duo.
Xingin
Xiaohongshu (rednote): more photos and posts, and video beside its comments, when open
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo, as rednote. The App Store release notes for version 9.52 (released October 26, 2026) don't mention the Duo.
Meta
Photo and video sharing from Meta, with more posts and Stories on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 453.0 (released October 26, 2026) don't mention the Duo.
Lyft
Ride-hailing, with ride options beside a larger route map on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 2026.41.31 (released October 28, 2026) don't mention the Duo.
Paramount
Paramount's streaming service, with richer playback controls and browsing when open
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 15.28.1 (released October 22, 2026) don't mention the Duo.
Tripsy LLC
Trip planner whose places list sits beside the map when the phone is open
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. Earlier, the developer, in a post on its Bluesky account saying Tripsy is ready for iPhone Duo with navigation adapted throughout the app (bsky.app).
Ryan Fredericks
An instant film camera that prints as you unfold the Duo
Simulator verified: Ryan Fredericks, the developer, in a submission to FoldHunt on October 18, 2026, with simulator screenshots in the press kit (cocktail5555.github.io) and a video on X (October 11, 2026). The app came out on the App Store on October 19, 2026, at $1.99, and its description has a "Designed for iPhone Duo" section listing the same closed, standing, seated, portrait and landscape layouts.
Cody Bromley
Mix rain, waves and noise in any pose, or set it half folded as a bedside sound machine
Simulator verified: Cody Bromley, the developer, in a submission to FoldHunt on October 28, 2026, and in Blankie's iPhone Duo guide, with captures from the simulator. The App Store seller is Cody Bromley. The release notes for version 2.1.0 (released October 27, 2026) add support for iPhone Duo.
Simon Pinkas
Flashcards whose answer arrives as you open the phone: stop as soon as you know it
Simulator verified: Simon Pinkas, the developer, in a submission to FoldHunt on October 22, 2026, describing the closed, opening, half-folded, open and Split View layouts. The press kit has screenshots set in Apple's iPhone Duo artwork. RectoVerso came out on the App Store on October 23, 2026, at version 1.0.2: its description has an On iPhone Duo section, and the release notes mention opening iPhone Duo to reveal a figure's labels and Stats showing its chart beside the summary on the open, upright phone.
Plot Network Inc.
A calm daily planner whose Day and Do views sit side by side when the Duo opens
Simulator verified: Plot Network Inc., the developer, in a submission to FoldHunt on October 21, 2026, pointing to a Threads post from October 16 with iPhone Duo screenshots. The press kit (solarday.app) has iPhone Duo screenshots framed in the device whose screens are exactly the size of the simulator's open display (2853 × 2007) and cover (1398 × 2034). The release notes for version 1.4.1 (released October 17, 2026) say Solarday is made for iPhone Duo: unfolded, Day and Do sit side by side; folded, it works the way it always has.
DSST LLC
A falling-block roguelite built for the fold: the well above the hinge, your hands below
Simulator verified: DSST LLC, the developer, in a submission to FoldHunt on October 24, 2026, with a one-take recording from the iPhone Duo simulator on YouTube, also on the game's website with captures of the half-open layouts. The App Store seller is DSST LLC. Load Bearing came out on October 23, 2026, and its App Store description has a section on iPhone Duo.
DM Solutions and Development LLC
A film slate you shut to clap: the halves are the sticks, and each take is logged
Simulator verified: DM Solutions and Development, the developer, in a submission to FoldHunt on October 21, 2026, with a recording of the app in the iPhone Duo simulator on YouTube; the developer says it was built and tested in the simulator with iOS 27.1 and Xcode 27.1. Version 1.0 came out on the App Store on October 22, 2026, and its description is written around the iPhone Duo: open upright, the sticks meet on the crease; lying open, the slate and the shot log share the two pages; shut, the cover shows the take just clapped and the next one.
Amit Kumar Srivastava
A trip's map on one side of the open Duo, its stops and walk times on the other
Simulator verified: Amit Kumar Srivastava, the developer, in a submission to FoldHunt on October 22, 2026, describing the cover, open, half-folded and Split View layouts. The YouTube Short linked in the submission has since been removed by its uploader; PixoMap's channel posted a 60-second iPhone Duo Short on October 23 with captures from the simulator. The release notes for version 1.4.1 (released October 20, 2026) say PixoMap is ready for iPhone Duo, and the App Store description has an On iPhone Duo section.
ReAlign Leadership LLC
A shared gratitude jar: open the Duo and the jar faces a joy from it, like a book
Simulator verified: ReAlign Leadership LLC, the developer, in a submission to FoldHunt on October 21, 2026, with a plain screen recording of the app on the iPhone Duo simulator (iOS 27.1) on YouTube and a page about the Duo layouts (joyjar.app). JoyJar is coming soon to the App Store and Google Play.
Zafer ARICAN
A handwritten journal: today's page on one side of the fold, today's plans on the other
Simulator verified: Zafer ARICAN, the developer, in a submission to FoldHunt on October 20, 2026, with simulator screenshots and recordings on the Penjo site (penjoapp.com). The release notes for version 3.8 (released October 20, 2026) say Penjo is now optimized for iPhone Duo in every pose: open, the page uses Penjo's iPad layouts; in the book and seated poses it stays clear of the fold; fold it shut and the journal closes.
Manuel Kehl
A meditation timer that starts when you stand the Duo up like a tent, like an hourglass
Simulator verified: Manuel Kehl, the developer, in a submission to FoldHunt on October 21, 2026, with unframed captures from the iPhone Duo simulator in the press release (impresskit.net) and a walkthrough on YouTube. The release notes for version 1.18 (released October 20, 2026) bring full iPhone Duo support, with layouts for the inner and outer displays, the fold and landscape, and a meditation that starts when you stand the phone up like a tent.
Austin Zani / Live Every Week Labs
Unfold your home bar: your bottles and cocktails you can make, side by side
Simulator verified: Austin Zani, the developer, in a submission to FoldHunt on October 18, 2026, with simulator screenshots in the Spritz press kit (usespritz.app) and in a post on X. The App Store seller is Live Every Week Ltd. The release notes for version 1.3.0 (released October 18, 2026) say Spritz now has layouts optimized for iPhone Duo, folded or open, in portrait or landscape.
Edoardo Galati
An RSS reader that swipes through cards closed and splits list and article open
Simulator verified: Edoardo Galati, the developer, in a submission to FoldHunt on October 18, 2026, with a screen recording of the app on the iPhone Duo in a post on X (October 11, 2026), and in the App Store release notes. Version 1.3 (released October 18, 2026) says that on iPad, Mac and the open iPhone Duo, articles read in a comfortable column. Version 1.2.1 had already named a half-folded layout and Immersive View.
DM Solutions and Development LLC
Bilingual stories that open like a book, the language you're learning beside your own
Simulator verified: DM Solutions and Development, the developer, in a submission to FoldHunt on October 15, 2026, saying it will be ready on launch day, with a recording of version 1.0 in the iPhone Duo simulator on YouTube. The app is on the App Store as Facing Pages: Learn Languages (version 1.0.2, first released October 19, 2026), and its description has a "MADE FOR IPHONE DUO" section.
Rafael Schmitt
Brazil's political comedy podcast app: player on one page, chapters on the other
Simulator verified: Rafael Schmitt, the developer, in a Mastodon post in Portuguese (September 26, 2026) with a recording of the app in the iPhone Duo simulator, and in a submission to FoldHunt on October 17, 2026. Version 13.7 (released October 22, 2026) mentions it in its release notes, in Portuguese: "No iPhone Duo aberto, a busca fica de um lado da tela e a capa e os controles, do outro" (open, the search sits on one side and the cover and controls on the other). The description doesn't mention the Duo.
Chris Wu
A weather app that brings its iPad layout to the open Duo and splits at the half-fold
Simulator verified: Chris Wu, the developer, in a submission to FoldHunt on October 16, 2026, saying it's ready for launch day, with screenshots of the app in the iPhone Duo simulator on the app's press page, on X and on Mastodon. The App Store seller is Christopher Wu (id 6444577668). The release notes for version 5.30 (released October 16, 2026) have a section on iPhone Duo support.
Add Item To Ltd
A home inventory that opens into two pages: your list on one, the item you tap on the next
Simulator verified: Add Item To Ltd, the developer, in a submission to FoldHunt on October 24, 2026, and on the additem.to iPhone Duo page, with captures from the simulator. The App Store seller is Add Item To Ltd. The App Store description says it is made for iPhone Duo and iPad.
Phil Milburn-McNulty
Helps you pick a film: your picks on one half of the Duo, the film on the other
Simulator verified: Phil Milburn-McNulty, the developer, in a submission to FoldHunt on October 24, 2026, and on Faro's iPhone Duo press page, with captures at the sizes of the simulator's displays. The App Store seller is Philip Milburn-McNulty. The release notes for version 11.6 (released October 24, 2026) say Faro now makes full use of iPhone Duo.
Nguyen Vinh
A cozy hidden-object game where spot the difference opens like a book across the fold
Simulator verified: Nguyen Vinh, the developer, in a submission to FoldHunt on October 26, 2026, with a 24-second recording from the iPhone Duo simulator and a public TestFlight. The App Store seller is Nguyen Vinh. The release notes for version 1.2.6 (released October 24, 2026) say it is made for iPhone Duo.
Nguyen Vinh
Relaxing color by number: unfold mid-painting and the picture fills the open display
Simulator verified: Nguyen Vinh, the developer, in a submission to FoldHunt on October 26, 2026, with a 27-second recording from the iPhone Duo simulator. The App Store seller is Nguyen Vinh. The developer says the Duo layouts came in version 1.4 (October 19, 2026); the release notes for 1.4.1 (released October 21, 2026) don't mention the Duo.
Abiem LLC
A treasure chest game where the hinge is the lid. The loot is terrible. That's the point.
Simulator verified: Abiem LLC, the developer, in a submission to FoldHunt on October 27, 2026, and in the press kit on the game's website, with Duo screenshots. The App Store link it sent (id6822189620) didn't open in any store we tried on October 28, 2026.
Siper Apps AB
A gym workout log that opens into your sets beside the session's totals and rest timer
Simulator verified: Siper Apps AB, the developer, in a submission to FoldHunt on October 24, 2026, and on the RepCount iPhone Duo page, with unframed captures from the simulator. The App Store seller is Siper Apps AB. The developer says the Duo support shipped in version 10.11.0 on October 23, 2026; the release notes for 10.12.0 (released October 27, 2026) don't mention it.
Cheng Song
A Magic 8-Ball for the fold: close the Duo on a question, open it to see the answer
Simulator verified: Cheng Song (JonySong), the developer, in a submission to FoldHunt on October 23, 2026. The App Store seller is 程 宋. AskZine came out on October 15, 2026; the release notes for version 1.0.2 (released October 22, 2026) say it was built for iPhone Duo from day one, and the description explains the reveal as the screen unfolds. The website has an edited recording from the iPhone Duo simulator.
Tasty Cocoa Software LLC
An Apple Music player whose styles keep the art and controls on either side of the fold
Simulator verified: James Frye of Tasty Cocoa Software LLC, the developer, in a submission to FoldHunt on October 22, 2026, and in a post on X on October 21 saying Marquee is "iPhone Duo ready on day 1". The Marquee iPhone Duo page and press kit say Duo support came in version 1.2.4 (October 6, 2026), and the press kit has unframed iPhone Duo screenshots at the sizes of the simulator's open display (2853 × 2007) and cover (1398 × 2034). The release notes for the current version, 1.2.6 (released October 14, 2026), are about the Vinyl player and don't mention the Duo.
JA Technology Consulting LLC
A digital closet and AI stylist, with the piece you tap beside the grid when open
Simulator verified: Jake Antebi, the founder of Megu, in an email to FoldHunt on October 22, 2026, saying Duo support is live with a layout designed for the unfolded screen, and in a post on the Megu blog on October 19, 2026 saying the Duo layouts arrived in version 1.6. The press kit holds unframed captures of the app on the Duo's cover and open display, at the simulator's screen sizes. The App Store seller is JA Technology Consulting LLC. The release notes for version 1.8 (released October 22, 2026) say: "Improvements for iPhone Duo."
Jeremy Collins
An origami puzzle game where you fold the Duo to fold the paper and close it to crease
Simulator verified: Jeremy Collins, the developer, in a submission to FoldHunt on October 21, 2026, saying the Duo's seam works as a crease and the Guidebook can sit beside the sheet in tabletop or open. The Paper & Grain page on the developer's site has iPhone Duo simulator screenshots and an 18-second overview of the Duo folding the paper. The App Store description says the game is optimized for iPhone Duo, with optional folding along the device seam on iOS 27.1 or later. Version 1.0 was released October 19, 2026.
Zachary Coleman
A read-aloud app that opens like a book: the text on one page, the player on the other
Simulator verified: Zachary Coleman, the developer, in a submission to FoldHunt on October 22, 2026. The press kit (zach-coleman.com) has unframed iPhone Duo screenshots at the sizes of the simulator's open display (2853 × 2007, and 2007 × 2853 upright) and cover (1398 × 2034). The App Store description has a "Prismark for iPhone Duo" section, and the release notes for version 1.0.1 (released October 22, 2026) say "Even better on iPhone Duo".
GymStreak Ltd
A sleep sound recorder: a bedside clock when folded, your night report on two pages open
Simulator verified: GymStreak Labs, the developer, in a submission to FoldHunt on October 22, 2026, saying version 1.6 is live on the App Store. The SleepLog website has an iPhone Duo section with unframed screenshots of the cover, the open display and the half-open layout. The App Store seller is GymStreak Ltd; the release notes for version 1.6 (released October 21, 2026) are about the new free tier and don't mention the Duo.
Jeremy Collins
A code keyboard with its own layouts for the Duo open, folded like a laptop, and closed
Simulator verified: Jeremy Collins, the developer, in a submission to FoldHunt on October 21, 2026, describing separate layouts for the Duo open, in tabletop and closed. The TabForge page on the developer's site has screenshots of all three in the iPhone Duo simulator and a 15-second overview of the Duo opening into laptop mode. The App Store description says supported Duo layouts show more controls and need iOS 27.1. The release notes for version 1.0.1 (released October 21, 2026) add a Tip Jar and don't mention the Duo.
Florian Seida
Your Docker servers in a sidebar beside their containers, with a terminal alongside
Simulator verified: Florian Seida, the developer, in a submission to FoldHunt on October 21, 2026, with a recording of the app in the iPhone Duo simulator in a post on X the same day saying WhaleDeck now supports iPhone Duo, along with a built-in terminal and faster loading. The release notes for version 3.4.0 (released October 21, 2026) list the terminal and the speed-ups but don't mention the Duo.
Manuel Kehl
A day planner whose Cue view shows what's on now when you stand the Duo up
Simulator verified: Manuel Kehl, the developer, in a submission to FoldHunt on October 21, 2026, with unframed captures from the iPhone Duo simulator in the press release (impresskit.net) and a walkthrough on YouTube. The release notes for version 1.9 (released October 20, 2026) say Daylish is now fully optimized for iPhone Duo, with Cue in tent and laptop mode, a sidebar in landscape and nothing on the crease when partly open.
Florian Seida
Your vehicles in a column beside the stats for the one you picked, with a window each
Simulator verified: Florian Seida, the developer, in a submission to FoldHunt on October 20, 2026, with a recording of the app in the iPhone Duo simulator in a post on X. The release notes for version 2.5.0 (released October 20, 2026) say DriveDex makes better use of the screen on iPhone Duo and iPad, and that vehicles, statistics and logs can now open in separate windows.
Tenth Room Studio
A horror game where the Duo is a hotel room door: fold it shut, open a crack to peek
Simulator verified: Tenth Room Studio, the one-person studio of Kane Vu, in a submission to FoldHunt on October 20, 2026. The press kit (tenthroomstudio.com) has unframed iPhone Duo screenshots at the sizes of the simulator's open display (2853 × 2007) and cover (1398 × 2034). The game is coming soon to the App Store; its release date is to be announced.
Basement Softworks, LLC
An RSS reader with no timeline: half-fold the Duo and an article reads like a book
Simulator verified: Dan at Basement Softworks, the developer, in a submission to FoldHunt on October 21, 2026. The developer's YouTube video "iPhone Duo App Demo: FINALLY in the simulator" (October 7, 2026) shows the app running in the iPhone Duo simulator. The App Store description of version 1.0 (released October 19, 2026) says Scoopy fully supports the iPhone Duo, with a new way to read articles in Book Mode.
Ahnaf Mahmud
Every subscription and its next renewal, open side by side on the Duo
Simulator verified: Ahnaf Mahmud, the developer, in a submission to FoldHunt on October 19, 2026, with a recording of the app in the iPhone Duo simulator posted on X and on the SubManager news page. The release notes for version 2.1.0 (released October 19, 2026) say SubManager is ready for iPhone Duo, with side-by-side layouts on every screen.
Peter Zanetti
Walk-up music for youth baseball and softball, with the lineup beside the player cards
Simulator verified: Peter Zanetti, the developer, in a submission to FoldHunt on October 20, 2026. The app's update page (zanettimedia.com) has screenshots of the cover and the open display from the iPhone Duo simulator, and says the Duo support was built on Apple's simulator ahead of launch. The release notes for version 1.7.0 (released October 16, 2026) say Walk Up Songs is fully compatible with iPhone Duo on day one.
Hernan Rosario / IntraPixel
A talking Dex that folds like the real one, with a data screen when half-folded
Simulator verified: IntraPixel, the developer, in a submission to FoldHunt on October 18, 2026, with pictures of the closed and open layouts on the app's website (intrapixel.com). The App Store seller is Hernan Rosario. The App Store description describes the closed, open and half-folded layouts.
Curtis Tunaley / Veilus Digital
Live video where the whole room reacts at once: stars, gifts, and the sky itself
Simulator verified: Curtis Tunaley, the developer, in a submission to FoldHunt on October 17, 2026, with screenshots of the open Duo on the Lumecast site (lumecast.app). The App Store seller is Curtis John Tunaley. The release notes for version 3.3.1 (released October 17, 2026) say the update is for iPhone Duo launch week: the camera follows you when you fold or unfold, the cast takes one page and the room the other, and half-folded it becomes a camcorder.
Banjo Obayomi
A block-launching puzzle game where two players face off across the Duo's fold
Simulator verified: Banjo Obayomi, the developer, in an email to FoldHunt on October 22, 2026, and posting as banjtheman in a comment on r/iosgaming. The press kit says the Duo support was built in Apple's simulator ahead of the hardware, and has unframed iPhone Duo screenshots at the size of the simulator's open display. The App Store seller is Temidayo Obayomi. The notes for version 1.0.1 (released October 17, 2026) say keepers beaten together in Team Boss on iPhone Duo are now saved.
Óscar de la Torre
Fourteen board games for two on one phone, where the hinge is part of the board
Simulator verified: Óscar de la Torre, the developer, in emails to FoldHunt on October 12, 2026 and a week later, saying the game was built with Xcode 27.1 and tested in all three postures in the iPhone Duo simulator. The site's 28-second preview is captioned "recorded on the iPhone Duo simulator". The App Store description says the game is compatible with iPhone Duo. Version 1.3 (released October 18, 2026) adds 16 languages.
Ryan McLeod / Shapes and Stories LLC
Puzzles you solve without touching the screen, adapted to every pose of the Duo
Simulator verified: Shapes and Stories, Ryan McLeod's studio and the developer, in a submission to FoldHunt on October 17, 2026, saying the challenges and every part of the interface adapt to the iPhone Duo's poses, sometimes with new ways to play, ready for launch day. In an email that followed, Ryan said the Duo build has been tested extensively in the simulator. The press kit's iPhone Duo section (blackboxpuzzles.com) shows the game on a rendered Duo closed, open, half-folded and standing as a tent. Version 3.3 on the App Store (released October 22, 2026) says "Over 100 views were rebuilt so you can fold, stretch, rotate Blackbox all day long" but doesn't name the Duo.
Tyler Hillsman / 1881 Digital, LLC
A board of tally counters: half-folded, counts sit above the fold and the buttons below
Simulator verified: Tyler Hillsman, the developer, in a submission to FoldHunt on October 17, 2026, with an unframed screenshot of the app in the iPhone Duo simulator in the press kit (keepcount.app). The App Store seller is 1881 Digital, LLC. The release notes for version 1.8 (released October 12, 2026) say KeepCount now adapts to the iPhone Duo's inner and outer displays, with a tabletop layout when it's partly folded.
Hernan Rosario / IntraPixel
A naval grid game: the target grid on one half of the fold, your fleet on the other
Simulator verified: IntraPixel, the developer, in a submission to FoldHunt on October 18, 2026, with a gameplay recording and pictures of the open and half-folded layouts in its press kit (intrapixel.com). The App Store seller is Hernan Rosario. The App Store description says that on iPhone Duo the game lays itself across the fold, with the target grid on one half and your fleet and controls on the other.
RDub Studios
A 60-second brain dump that sorts your thoughts on the open display and types on the cover
Simulator verified: Rich Weiss, the developer (RDub Studios), in an email to FoldHunt on October 15, 2026, with unframed captures of the app on the open iPhone Duo display (braindrain.app) and composites of it closed, open, propped like a laptop and standing as a tent (braindrain.app). Version 2.5.0 came out on the App Store on October 15, 2026; its release notes say BrainDrain now fits iPhone Duo, folded or open, flat or propped up like a laptop.
Jorick van Meijeren
A country day tracker whose dashboard and timeline split along the fold when open
Simulator verified: Jorick van Meijeren, the developer, in an email to FoldHunt on October 23, 2026, and on the AtlasDays for iPhone Duo press page, with screenshots and a recording captioned as made in the iPhone Duo simulator. The release notes for version 2.8 (released October 22, 2026) say AtlasDays is ready for iPhone Duo: unfold it and the Dashboard, the Timeline and Settings spread out into two columns.
Cleaver Kitchen
Cooking Mode that changes with every fold, plus Cook Together to time several dishes
Simulator verified: Cleaver Kitchen's developer, in a submission to FoldHunt on October 13, 2026, with a recording of the app in the iPhone Duo simulator on iOS 27.1 (youtube.com). The developer says the recording is version 2.1.5, the App Store code run as a Debug build in Xcode 27.1, with the poses set by the app's own debug override rather than the simulator's hinge, and that the Duo layouts are in the App Store version. The App Store description has a Made for iPhone Duo section that describes the same three layouts, and so does the app's site. Version 2.2.0 (released October 14, 2026) adds the iPad version and iCloud sync.
Mustafa Yusuf / Msquare Labs
A task manager with boards that move cards away from the Duo's fold
Simulator verified: Mustafa Yusuf, the developer, in a submission to FoldHunt on October 18, 2026, with simulator recordings in the Tasks 5.2 press kit (thetasks.app) and a release story. The App Store seller is Msquare Labs Technologies Private Limited. The release notes for version 5.2 (released October 14, 2026) say Tasks has been rethought and optimized for iPhone Duo, with layouts, navigation and controls that adapt as the screen changes.
Aberfeldy Studios
A migraine log you start in a tap, with multi-column layouts for each pose of the Duo
Device verified: Aberfeldy Studios, the developer, in a submission to FoldHunt on October 17, 2026, and in the App Store release notes for version 27.1 (released October 12, 2026), which introduce an all-new design for iPhone Duo that adapts to each posture, in portrait and landscape. Adrian Eves, the developer, had said on Bluesky on October 10, 2026 that Auralog was ready for the Duo after an Apple iPhone Duo workshop where the time went mostly on accessibility (bsky.app). On October 19, 2026, Adrian sent FoldHunt a private screen recording of Auralog on a real iPhone Duo, made at that workshop. The App Store seller is Aberfeldy Studios, LLC.
Kartik Kaushik
A chalkboard sum puzzle that opens like a book: the target on one page, tiles on the other
Simulator verified: Kartik Kaushik, the developer, in a submission to FoldHunt on October 23, 2026, and in a post on X the same day with a recording from the iPhone Duo simulator. The App Store seller is Kartik Kaushik. Chalk & Sum came out on October 23, 2026, and its App Store description says it opens like a book on iPhone Duo, the target on one page and play on the other.
Individuation Labs LLC
Quick quizzes for the guitar fretboard and chords, with the question beside its answers
Simulator verified: Individuation Labs, the developer, in a submission to FoldHunt on October 27, 2026, and on the Fretalus website, with App Store screenshots from the iPhone Duo simulator. The App Store seller is Individuation Labs LLC. The release notes for version 1.4.2 (released October 24, 2026) say that on an unfolded iPhone Duo the question sits beside its answers.
Ivan Tse / Nerd Tower LLC
A one-line-a-day diary that opens into your diary with search beside it
Simulator verified: Ivan Tse, the developer, in a post on their blog about Little Memory 2.2 (October 14, 2026), with screenshots from the iPhone Duo simulator, and in a submission to FoldHunt on October 23, 2026, with a recording on YouTube. The App Store seller is Nerd Tower LLC. The release notes for version 2.2 (released October 14, 2026) list support for wide-screen devices, iPhone Duo and iPad.
RDub Studios, LLC
An arcade bowling cabinet where the Duo's fold changes your shot
Simulator verified: Rich Weiss of RDub Studios, the developer, in a submission to FoldHunt on October 24, 2026, and on the Pocket Midway website, with a 26-second capture from the iPhone Duo simulator. The game is in beta on TestFlight, with an App Store release being prepared at a planned $2.99; beta access is on request from the website.
Harold Moses
Write one prompt for several AI apps, then compare their answers side by side when open
Simulator verified: Harold Moses, the developer, in a submission to FoldHunt on October 24, 2026, and on the Poly-Glot website, with a screenshot of the app in Xcode's iPhone Duo simulator. The App Store seller is Harold Moses. The release notes for version 1.1.12 (released October 27, 2026) describe the folded and unfolded layouts for iPhone Duo.
Daniel Bilsborough
SSH terminal for AI coding agents in Tmux, edge to edge open and centred on the cover
Simulator verified: Daniel Bilsborough, the developer, in a submission to FoldHunt on October 28, 2026, and on Shell Drop's iPhone Duo page, with captures from the simulator. The App Store seller is Daniel Bilsborough. The App Store release notes for version 5.2.2 (released October 28, 2026) say: "Fully optimised for iPhone Duo, folded or open. The terminal sizes itself to the screen, and every screen stays clear of the status bar."
Rob Rightmyer / CodeFarmer
1,443 solitaire games, with lessons and rules beside the card table on the open Duo
Simulator verified: Rob Rightmyer of CodeFarmer, the developer, in a submission to FoldHunt on October 24, 2026, and on the Solitaire 1380 iPhone Duo page, with the Duo screenshot and three Duo previews from the App Store. The App Store seller is Rob Rightmyer. The Duo layouts came in version 1.1.7, and the release notes for 1.1.9 (released October 28, 2026) name iPhone Duo.
Rob Rightmyer / CodeFarmer
Turn words into spells, with all 25 letters in view and the battle log beside the board
Simulator verified: Rob Rightmyer of CodeFarmer, the developer, in a submission to FoldHunt on October 25, 2026, and on the SpellGrid iPhone Duo press page, with screenshots and narrated previews. The App Store seller is Rob Rightmyer. The release notes for version 1.2 (released October 25, 2026) say SpellGrid now adapts to iPhone Duo.
Alan Brooks
A daily word hunt where rude words score more, and shutting the Duo censors it
Simulator verified: Alan Brooks, the developer, in a submission to FoldHunt on October 27, 2026, and on the Word Vice website, with captures from the iPhone Duo simulator. The App Store seller is Alan Brooks. The App Store description says Word Vice plays across both screens of an iPhone Duo.
Jorge Cohen
A yearly planner with your days beside their hours, and a planner cover when it's shut
Simulator verified: Jorge Cohen, the developer, in a submission to FoldHunt on October 21, 2026, with a recording of the app in the iPhone Duo simulator posted on X on October 20. The App Store description has a Made for iPhone Duo section, and the release notes for version 1.1.1 (released October 21, 2026) say that on iPhone Duo the closed phone becomes a planner with today on its cover. Calendaria came out on October 15, 2026 and needs iOS 27.
Fountain Interactive
Butterfly painting: fold the Duo shut to fold the page, then rub the cover to squish it
Simulator verified: Dan Fountain of Fountain Interactive, the developer, in a submission to FoldHunt on October 22, 2026, with a trailer on YouTube. The press kit has iPhone Duo screenshots at 2853 × 2007, the size of the simulator's open display, beside renders of the phone. The App Store seller is Fountain Interactive Ltd. The App Store description says that on iPhone Duo the phone is the paper: close it to fold the painting, rub the outside screen to squish it, and open it again for the print. The app came out on October 22, 2026, as version 1.0.1.
Lumessa Limited
Daily vocabulary as two pages: the word on the left, each lesson step on the right
Simulator verified: Lumessa Limited, the developer, in a submission to FoldHunt on October 22, 2026, pointing to iPhone Duo screenshots on its press page, captioned as captured in Apple's iPhone Duo simulator. The release notes for version 1.2.0 (released October 21, 2026) say that when you open the phone, Lumessa spreads across both pages, with the word on the left and each step on the right.
Francesco Prospato
A color-coded to-do list: your week on the cover, the month beside today's tasks open
Simulator verified: Francesco Prospato, the developer, in an email to FoldHunt on October 22, 2026, pointing to an Instagram post from that day with screenshots of Smart Tasks on the iPhone Duo, closed and open, in different category colors. The App Store seller is Francesco Prospato. The release notes for version 3.7.2 (released October 22, 2026) say Smart Tasks now supports iPhone Duo, closed or open, that the + button joins the controls on the side of the screen, and that the Month and Week layouts in categories use the whole screen when the Duo is open.
Shubham Shah
Twitch and Kick streams beside live chat, or above chat and controls half-folded
Simulator verified: Shubham Shah, the developer, in a submission to FoldHunt on October 22, 2026, saying version 2.1.7, released October 10, added iPhone Duo support, and linking a post on X with a launch video. The developer first showed the Duo layouts in simulator screenshots posted on X on September 27. The App Store seller is SHUBHAM SHAH; the release notes for version 2.1.9 (released October 22, 2026) and the description don't mention the Duo.
Jan Speich
The Duo as a waffle iron: pour on the open display, fold it shut to bake, unfold in time
Simulator verified: Jan Speich of Mixreelz, a one-person studio in Germany, in an email to FoldHunt on October 22, 2026, with a 17-second clip and the press kit, which says its screenshots and videos were recorded in the iPhone Duo simulator. The App Store seller is Jan Speich. Version 1.0 came out on October 22, 2026; the store description says the game is made for iPhone Duo with iOS 27.1 or later, and that on iPhone models that don't fold a tap on the handle closes the iron instead.
Pixelfolio Inc.
An RSS reader with summaries: open, the article list sits beside the article
Simulator verified: Dom at Pixelfolio Inc., the developer, in a submission to FoldHunt on October 20, 2026, with a video and unframed screenshots from the iPhone Duo simulator in the Bulletin press kit (pixelfolio.app). The press kit lists version 3.1 and iPhone Duo among the platforms. Version 3.1 reached the App Store on October 22, 2026, and its release notes say "Bulletin 3.1 is made for iPhone Duo."
Cromulent Labs
A marble maze across both halves of the Duo, where folding turns the floor into a ramp
Simulator verified: Greg Gardner of Cromulent Labs, the developer, in a submission to FoldHunt on October 20, 2026, saying the game was run in the iPhone Duo simulator, with a minute of gameplay in the simulator's device frame on the game's site, on YouTube and on X. The App Store description calls it a marble maze where the two screens are two halves of one board and the hinge is a second control. The game came out on October 23, 2026.
Cascable AB
Tells you when your photo spots will have the light and weather you want, now on the Duo
Simulator verified: Alana at Cascable AB, the developer, in a submission to FoldHunt on October 20, 2026, with the app's App Store event "iPhone Duo support is here!", whose artwork holds captures from the iPhone Duo simulator, in a post on X. The release notes for version 1.3.1 (released October 20, 2026) say the update adds support for iPhone Duo.
Panoramic Software Inc.
Ten calculators and converters, with the tape of results beside the calculator when open
Simulator verified: Panoramic Software Inc., the developer, in a submission to FoldHunt on October 18, 2026, and in the App Store release notes for version 7.0.6 (released October 12, 2026), which describe the closed and open layouts. The app's page on the developer's website has pictures of both on the iPhone Duo.
Panoramic Software Inc.
A metronome with the beat display on one half of the open Duo and controls on the other
Simulator verified: Panoramic Software Inc., the developer, in a submission to FoldHunt on October 18, 2026, and in the App Store release notes for version 4.0.4 (released October 14, 2026): "iPhone Duo - controls down the side, and the metronome and tuner split at the fold when open". The app's page on the developer's website has pictures of the closed and open layouts.
Tyler Hillsman / 1881 Digital, LLC
Tennis, pickleball and padel scoring: half-folded, the score above the fold and taps below
Simulator verified: Tyler Hillsman, the developer, in a submission to FoldHunt on October 17, 2026, with an unframed screenshot of the app in the iPhone Duo simulator in the press kit (servescoring.app). The App Store seller is 1881 Digital, LLC. The release notes for version 1.3 (released October 10, 2026, per the press kit) add iPhone Duo layouts for book and tabletop use; the current version, 1.4 (October 16), carries the same notes.
Anna & Maciej Szamowski
A native app for Google Calendar, with the whole week on one screen when the Duo opens
Simulator verified: Anna and Maciej Szamowski, the developers, in a submission to FoldHunt on October 16, 2026, saying it will be ready on launch day, with a recording of the app in the iPhone Duo simulator on YouTube. The iPhone and iPad app is in beta; a search of the App Store found only hora for Mac.
Adrien Friggeri
A paper maze you solve by folding the phone: fold it to lay one page on the other
Simulator verified: Adrien Friggeri, the game's designer, in an email to FoldHunt on October 15, 2026, with a recording of the game in the iPhone Duo simulator on the press page (orisuji.com). Orisuji came out on October 23, 2026, at version 1.0.2, and Apple put it in its Great Games on iPhone Duo collection, Adrien Friggeri wrote to FoldHunt that day. Its App Store description says it is designed for iPhone Duo: folding the phone is the move. On other iPhones and on iPad, the two pages sit side by side and you fold with a tap or a pinch.
Serpenti Sei Japan LLC
A Japanese dictionary that keeps the page you're reading beside the definitions
Simulator verified: Serpenti Sei Japan, the developer, in a submission to FoldHunt on October 9, 2026, saying the iPhone Duo update will be on the App Store in time for the October 23 launch, with a screen recording of it in the iPhone Duo simulator (screen.studio). The developer says the layout was also tried on a real iPhone Duo at a workshop at Apple's Japan headquarters. The App Store seller is Serpenti Sei Japan LLC (id 881697245). The release notes for version 1.36 (released October 19, 2026) say Nihongo adapts as you fold and unfold iPhone Duo, making the most of both displays.
Hugo Pinon
An ambient scene and its sound mixer closed, the scene filling the open screen beside them
Simulator verified: Hugo Pinon, the developer, in a submission to FoldHunt on October 10, 2026, saying it is ready for launch day, and in a YouTube video of the app on iOS 27.1 in the iPhone Duo simulator from Xcode 27.1 RC, closed and open (youtube.com). The App Store seller is Hugo Pinon (id 6737862796). The release notes for version 2026.10.23 (released October 10, 2026) say it is fully optimized for iPhone Duo, with a split-display audio mixer, quick playback controls on the cover screen and side-by-side multitasking.
Darryl Bayliss
CI build alerts, your repositories on the cover and a repo's build status beside them open
Simulator verified: Darryl Bayliss, the developer, in a submission to FoldHunt on October 23, 2026, and in a Bluesky post on September 20 with a recording of Buildhorn in the iPhone Duo simulator (bsky.app). The App Store seller is Daz Software Ltd. The release notes for version 1.1.1 (released October 18, 2026) say the store listing was updated "to show off how Buildhorn looks on the upcoming iPhone Duo"; they don't describe a layout.
ChevApps Inc.
Calorie tracker with its ring and macros side by side, and charts beside logs, when open
Simulator verified: Danijela Vrzan, the developer, in an email to FoldHunt on October 22, 2026, and in a Bluesky post on September 18 with three screenshots from the iPhone Duo simulator (bsky.app). The App Store seller is ChevApps Inc. The release notes for version 3.2.1 (released October 21, 2026) add iPhone Duo support, with layouts that adapt as you fold, unfold or resize the app.
Individuation Labs LLC
An NES-style step sequencer: the grid on one side of the fold, the keys on the other
Simulator verified: Individuation Labs, the developer, in a submission to FoldHunt on October 27, 2026, and on the Chiptune website, with App Store screenshots from the iPhone Duo simulator. The App Store seller is Individuation Labs LLC. The release notes for version 1.3.1 (released October 24, 2026) say Chiptune now fits iPhone Duo.
Rob Rightmyer / CodeFarmer
Question suspects with the testimony, clues and logic beside your case on the open Duo
Simulator verified: Rob Rightmyer of CodeFarmer, the developer, in a submission to FoldHunt on October 25, 2026, and on the Shadow Court iPhone Duo press page, with screenshots and previews of the upcoming update. The App Store seller is Rob Rightmyer. The current App Store version is 1.0.1 (released July 15, 2026), which doesn't include the Duo update.
Tyler Hillsman / 1881 Digital, LLC
Sticky notes as widgets, with a larger library and side-by-side editing on the Duo
Simulator verified: Tyler Hillsman, the developer, in the App Store release notes for version 5.4.0 (released October 13, 2026), which add iPhone Duo support with a larger library and side-by-side editing, and in a submission to FoldHunt on October 17, 2026, with an unframed screenshot of the app in the iPhone Duo simulator in the press kit (stickywidgets.app). The App Store seller is 1881 Digital, LLC; the App Store pictures show ordinary iPhones and iPads.
Nhat Le
Flexible alarms and timers: your alarms on one half, setup on the other when half-folded
Simulator verified: Nhat Le, the developer, in a reply on X with a video of VariAlarm on the Duo simulator, closed, half-folded and open (@NhatLe790379 on X). The App Store release notes for version 2.2.0 (October 7, 2026) say "Optimized for iPhone Duo".
Yhanco Grey Esteban
A life planner laid out for each Duo pose, down to a nightstand calendar
Simulator verified: Ygee Esteban, in a video of the app in the iPhone Duo simulator posted on X on October 12, 2026 (@ygee07 on X), and on the app's site, whose iPhone Duo section shows it closed, open, half-folded on a table and standing (y-pod.app). The site is signed by Ygee, and the App Store seller is Yhanco Grey Esteban (id 6451288906). The release notes for version 3.1 (released October 12, 2026) list native support for iPhone Duo.
Transit Now ltd
Live bus and train times, with the map beside your trip on the open Duo
Simulator verified: The app's own account, @trymomego, in a thread on X with a video and pictures of Momego on the iPhone Duo simulator, saying the team spent two days with a real Duo (@trymomego on X). The App Store seller is Transit Now ltd (id 1281251210). The release notes for version 2026.11 (released October 10, 2026) add iPhone Duo support, with Split View keeping the journey in view and a larger map when unfolded.
Riley Testut
Game emulator whose library reflows for the cover, open flat, standing and half-folded.
Simulator verified: Riley Testut, on Mastodon (mastodon.social), showing Delta's library in the iPhone Duo simulator. The App Store seller is Yvette Testut (Testut Tech).
A movie diary that keeps each film as a ticket, opened like a book on the Duo
Simulator verified: Flicit is made by FoldHunt's editor. Its App Store description says: "On iPhone Duo, Flicit opens like a book; bend it like a laptop and the ticket stands up while your seat waits below." The release notes for version 1.1 (released October 26, 2026) add: "On iPhone Duo, the tickets you flick land on the other page." The editor's simulator captures from adapting it are in FoldHunt's guide for coding agents (foldhunt.com). The App Store seller is 逸飞 汪.
Haruhiko Kishi
A health diary with facing weeks and large entry keys on the Duo
Simulator verified: Haruhiko Kishi, the developer, on the product page for the app, which shows unframed screenshots of it on the iPhone Duo's cover and open display. The App Store release notes for version 1.3.7 (released October 16, 2026) add that half-open on a desk, the value you are entering sits on top and the number keys below. The screenshots don't say which app version they show.
Michael Temper
A light puzzle game: close the Duo to enter a cloud, open it to step back outside
Simulator verified: Michael Temper, the developer, in the Tempuno press kit, showing the game in the iPhone Duo simulator in a 183-second recording. The App Store now has version 4.0.2 (released October 22, 2026), whose release notes say "Final release build for iPhone Duo, iPhone and iPad!"
Slip Angle Dynamics Pty Ltd
One listening queue, with music beside podcasts when open
Simulator verified: The developer, in a post on X on October 12, 2026 with a picture of the app open (@PodMelody on X), and in the App Store release notes for version 1.1.6 (released October 11, 2026): closed, the mix and its player stay on the cover; open, Music sits beside Podcasts; and half-folded, Now Playing in the Editorial style divides at the fold.
Bulltech
A red light session that starts when you unfold and a timer that rolls into the crease
Simulator verified: The developer, Bulltech, in a video on X of the Duo version on the simulator, posted on October 11, 2026 (@bullte_ch on X): "Will be ready on iPhone Duo, with special interaction designed for Duo only". The App Store seller is BULLTECH (id 6449202094). The current version, 4.0.1 (released October 22, 2026), does not mention the Duo in its release notes or description, so it isn't out yet.
Kankoda Sweden AB
Keyboard settings that turn into a sidebar and a page when the Duo opens
Simulator verified: Daniel Saidi of Kankoda, in a KeyboardKit blog post with simulator screenshots, closed, half-folded and open (keyboardkit.com). The App Store seller is Kankoda Sweden AB (id 1568444977). The release notes for version 4.8.0 (released October 9, 2026): "This version adds a new split-screen design for the iPhone Duo and the iPad." On October 10, 2026, Daniel posted on X that all of Kankoda's apps are ready for the Duo's launch (@danielsaidi on X).
Zhengqiao Jiang
Reads books and PDFs aloud, with the page beside the spoken words when open
Simulator verified: The developer, Zhengqiao Jiang, shows ReadAloud's iPhone Duo layouts in simulator screenshots on GitHub and calls them an upcoming update (github.com). The App Store seller is Zhengqiao Jiang (id 6765783837). Version 1.8.3 (released October 3, 2026) does not mention the Duo, and neither does the description.
Gowtham Oleti
Episode cards that split at the Duo crease
Simulator verified: Gowtham Oleti (@gow88_) posted Brink on the Duo simulator closed, open and half-folded (@gow88_ on X).
Dark Noise LLC
Ambient noise that splits at the Duo crease
Simulator verified: Charlie Chapman (@_chuckyc) showed Dark Noise on the Duo simulator closed, open and half-folded, after a few small tweaks (@_chuckyc on X).
David Steppenbeck
Goal rings on the cover, chart beside them open
Simulator verified: David Steppenbeck (@dsteppenbeck) posted GridKit on the Duo simulator closed, half-folded and open (@dsteppenbeck on X).
Adam Kovacs
A grid of habit cards on the cover; open, a sidebar of collections beside it
Simulator verified: Adam Kovacs, the developer (Adam KP on X), in a post with a video of Habitsy in the iPhone Duo simulator (@AdamKPx on X). The App Store page does not mention the Duo yet.
Haruhiko Kishi
Control a Mac in another room; on the Duo, the Mac above the fold and keys below
Simulator verified: The App Store release notes for version 1.3.0 say "Headroom 1.3.0 — iPhone Duo に対応しました" (now supports iPhone Duo): half-open like a laptop, the Mac on the upper screen, the control bar just above the fold and the keyboard on the lower screen, which stays when you open flat; fully open, the Mac fills the inner screen; closed, the cover with the control bar at the side; nothing is placed on the fold. MusicFlow's note.com post shows simulator screenshots (note.com).
Nguyen Hieu
A piano that fills the cover sideways, with the beat or lyrics beside the keys when open
Simulator verified: The Hi Piano YouTube channel shows the app on the Duo simulator in every pose (youtube.com). The App Store page does not mention the Duo yet.
Lucas Raggers
Film and TV database with a title's details on one half and its cast on the other
Simulator verified: Lucas Raggers, the developer, in a Reddit post with a video of Hollywoodland on the iPhone Duo simulator (reddit.com). In the comments the poster calls it "my app". The release notes for version 3.1 (released October 20, 2026) say it is made for iPhone Duo.
Oleh Pavliv
Today's calendar blocks on one half, the task list and its timer on the other
Simulator verified: Alek Pauls, in a post on X showing an update in the works on the Duo simulator (@alekpauls on X). The App Store seller is Oleh Pavliv, and the App Store page does not mention the Duo yet.
Naidubabu Vanam
Top stories on the cover, the list beside the article when open
Simulator verified: The OmniNews account posted "iPhone Duo Support!" with screenshots of the app closed, open and in Split View (@OmniNewsApp on X). The App Store page doesn't mention the Duo yet.
Rain Wu
Run plans on the Duo cover, route beside review when open
Simulator verified: Rain Wu, the developer, in a YouTube demo filmed in the Duo simulator (youtube.com). The App Store release notes for version 2.3.9 say maps, training cards and workout details make better use of the Duo, with layouts for folding and rotation.
Muhammad Faiz Masroor
Repaint a 3D room on the cover, half-folded or open
Simulator verified: RoomGenie (@RoomGenieApp) posted the 3D room on the Duo simulator half-folded, closed and open (@RoomGenieApp on X).
Maximilian Litteral
Show list beside episode detail across the crease
Simulator verified: Maximilian Litteral (@maxhasadhd) posted Television Time on the Duo simulator open, half-folded and closed (@maxhasadhd on X).
Simon Grimm
Farm plots that span the Duo crease
Simulator verified: Simon Grimm (@schlimmson) posted a 14-second recording of Tiny Harvest (shown as Golden Grove) in the Xcode iPhone Duo simulator, folding across the cover, the half-folded phone and the open display (@schlimmson on X).
Shanghai Huofeng Technology Co., Ltd.
Remote coding terminals on the cover, and one on each half when half-folded
Simulator verified: Jiacheng (@jiacheng_ai), creator of Vibe42, posted three Duo simulator screenshots and says Duo adaptation is done (@jiacheng_ai on X). The App Store seller is Shanghai Huofeng Technology Co., Ltd. (id6792229966); the current version, 0.12.0 (released October 20, 2026), has release notes that don't mention the Duo.
Zhao Xin
Markdown drafts on the cover, open and half-folded
Simulator verified: Zhao Xin (@owenzhao) posted a video of Writer for Markdown on the Duo simulator, closed, open and half-folded (@owenzhao on X). The App Store seller is listed as 鑫 肇 and the listing does not mention the Duo yet.
SlowBrewed Labs
Sales charts on the cover, a sidebar of sections half-folded, a full chart open flat
Simulator verified: Jay, the developer (SlowBrewed Labs; the App Store seller is Seou B Hounkanrin), in a reply on X to Linda Dong saying Appstead is ready for the iPhone Duo, with four images of it closed, half-folded and open, the first a capture from the iPhone Duo simulator and the rest renders (@SlowbrewedS on X). The App Store release notes for version 1.0.4 (released October 16, 2026) say "iPhone Duo ready!"
Tanmay Sonawane
The day's briefing on one half and the AI chat on the other, open or half-folded
Simulator verified: Tanmay Sonawane, the developer, in a post on X with a video of Halo closed, half-folded and open on the iPhone Duo, saying it will be submitted that day (@tanmays on X). The App Store release notes for version 1.2.1 (released October 15, 2026) mention a Duo paywall text fix, but the store does not describe the layout.
Davyd Hruts
Swipe through old photos on the cover, with bigger cards when open
Simulator verified: The developer (@GrutzDevid on X) posted a Duo simulator video, saying work on optimizing Sweepr had started for iPhone Duo (@GrutzDevid on X). The App Store release notes for version 2.1.0 (released October 9, 2026) say Sweepr is built for iPhone Duo: unfolded it fills the screen, held half open on its side it becomes a book with the deck on one page and Totals on the other, and upright the deck header moves into the top bar.
Piotr Jeremicz
Warsaw's buses and trams live on the map, closed or open
Simulator verified: The developer, Piotr Jeremicz, posted a Duo simulator video of Zaraz Jadę and said it took only a handful of tweaks (@PiotrekJeremicz on X). The App Store release notes for version 4.3.1 (released October 21, 2026) say: "Zaraz Jadę now supports iPhone Duo!"
Dynamic App Design
Jazz explorer, an artist and player on one side and their recording sessions on the other
Simulator verified: Dynamic App Design, the developer, in a Reddit post with a recording of Sessionography on the iPhone Duo simulator, calling it not final (reddit.com). The App Store page does not mention the Duo.
Giuseppe Giglio
IPTV player with the picture above the fold and the channel guide below
Simulator verified: The developer, posting as u/weyoun3000 on Reddit with a simulator video of the iPhone Duo version (reddit.com). The post links this App Store page. Not yet stated as released.
Akshat Saladi
Dog walk tracker that puts the route above and the controls below when half-folded
Simulator verified: The developer, Akshat Saladi, in a LinkedIn post with a simulator video of Zoomie's iPhone Duo layouts (linkedin.com). Version 1.0.6 (released October 8, 2026) says: "iPhone Duo support: Zoomie now takes advantage of the larger inside screen, along with some hinge interactions during playtime!"
Patrick Ostertag
News digest that becomes a desk display: the photo above the fold, the story below.
Simulator verified: Patrick Ostertag of OK-ia, in Mastodon posts (techhub.social and techhub.social). The App Store seller is Patrick Ostertag. Both posts show the app in the iPhone Duo simulator.
Ziga Dolar
Contact dates app with a new stats pane made to fill the open Duo's wide screen.
Simulator verified: Ziga Dolar, in a Mastodon post (mastodon.online). The post's recording is from the iPhone Duo simulator.
Creator View, L.L.C.
Formula widgets that got a redesign once the Duo's inner display opened up.
Simulator verified: Sean Allen (@seanallen_dev), in a post on X. The app account @pushpushapp, linked from the app's privacy policy, says Sean builds it and links this App Store page. Mike Rundle's post on October 11, 2026 shows its Duo layouts in the simulator (@flyosity on X). The seller is Creator View, L.L.C. (id 6744127751); version 1.1.6 (released September 12, 2026) does not mention the Duo.
Matteo Dall'Ombra
Theme park wait times that float over a full park map when the Duo opens.
Simulator verified: Matteo Dall'Ombra, in Mastodon posts (mastodon.social and mastodon.social). The screenshots in the first post are from the iPhone Duo simulator.
David Freeman
Dungeon card game laid out for the cover, the open screen and a half fold.
Simulator verified: David Freeman, in a Mastodon post (mas.to). The recording is of the iPhone Duo simulator.
Gabriel Guarino
Day planner that gives the current activity's tasks their own half when folded.
Simulator verified: Gabriel Guarino, on the SuperPlanner press kit (superplanner.app), with screenshots and a showcase video from the iPhone Duo simulator.
TOPOS TECH LLC
Local posts on a map, with cards and map rearranged for each way the Duo is held.
Simulator verified: The Topo account on Bluesky, in its Japanese "iPhone Duoへの道" (road to iPhone Duo) series (bsky.app). The App Store seller is TOPOS TECH LLC. The post is a video from the iPhone Duo simulator.
Jihoon Suh
Bible reader in vertical text that opens into a right-bound book spread.
Simulator verified: Jihoon Suh, on the Vertically Verse iPhone Duo page (vertically.works), with captures from the Xcode 27.1 simulator. The App Store seller is Jihoon Suh.
A cassette player for your music that unfolds into a companion page for each theme
Simulator verified: The developer, in the App Store release notes for version 2.0 (released October 17, 2026), which bring a complete outer and inner display experience to iPhone Duo, and in a recording of the app in the iPhone Duo simulator posted on X by 逸清先生 (@yiqingsir) on October 14, 2026.
Ivan Tse / Nerd Tower LLC
Plan backward from a deadline, with the plan list beside its steps when open
Simulator verified: Ivan Tse, the developer, in a post on their blog (October 12, 2026), which describes Ready Time 3.11 on iPhone Duo, and in a submission to FoldHunt on October 23, 2026, with a recording from the iPhone Duo simulator on YouTube. The App Store seller is Nerd Tower LLC, and the App Store page links to getreadytime.com.
An inspection app in the works whose touch test packs smaller cells along the crease
Simulator verified: Jack Yu, the developer, in screenshots of a development build in the iPhone Duo simulator, published in the project's review gallery on GitHub apart from its older drawn mock-ups. The app isn't on the App Store.
Benedict Woo
Campus bus times, with the details panel moving beside the map when open
Simulator verified: Benedict Woo, the developer, in a recording of the app on the cover and the open display of the iPhone Duo simulator, posted on LinkedIn on September 23, 2026. The App Store release notes for version 1.35 (released October 16, 2026) add full support for iPhone Duo; those for 1.30 (September 12) improved Duo compatibility.
Haruhiko Kishi
A coloring canvas that expands on the Duo and continues on the cover
Simulator verified: Haruhiko Kishi, the developer, on the product page for the app, which shows unframed screenshots of it on the iPhone Duo's cover and open display. The App Store release notes for version 1.3.7 (released October 16, 2026) say it works on iPhone Duo, and that opened flat you can color across the whole big screen. The screenshots don't say which app version they show.
James Davie Limited
A painting app where closing the Duo presses a mirrored print, like folded paper
Simulator verified: James Davie, the developer, in a 37-second recording of the app in the iPhone Duo simulator on the app's site: painting on the open display, the press on the cover, and the mirrored print when the phone opens. Version 1.1 was released October 15, 2026.
Navid Gooranourimi
A naval duel for two, with a fleet hidden on each half of the Duo
Simulator verified: Navid Gooranourimi, the developer, in four screenshots of the game on the open display of the iPhone Duo simulator, on the game's site. The developer set the hinge angle with debug settings and hasn't played it on a real Duo yet.
Russell Ong
A walking RPG, with battles beside your daily progress on the open Duo
Simulator verified: Russell Ong, on the Chonky Corgo blog, showing test build 2.1.0 (42) of the game in the iPhone Duo simulator. Version 2.1.0 came out on the App Store on October 14 with new Duo layouts; the blog's October 9 note that the update was still in testing came before that.
Haruhiko Kishi (MusicFlow)
A cube solver and solve timer, with a two-hand pad for the half-folded Duo
Simulator verified: MusicFlow, in an article on note.com on October 7, showing Cube 1.3.0 in the iPhone Duo simulator: the timer puts the clock above a two-hand pad. The current App Store version is 1.3.7, released October 18, 2026.
The Peninsular Company
An inkblot parlor game: drop ink inside, close the Duo to press it, open a mirrored blot
Simulator verified: The Peninsular Company, on its product page, showing Inkblotter in a 27-second recording from the iPhone Duo simulator: the notebook cover, ink placed on the right page, a mirrored blot after closing and reopening, and a reading on the right. The page announced version 1.0 for October 23, 2026. Version 1.0 is now on the App Store (seller Joseph Lint, released October 22, 2026), and its description says "Inkblotter turns iPhone Duo into the paper."
Haruhiko Kishi
Photo jigsaws, split into two halves for two players on the open Duo
Simulator verified: MusicFlow, on its website, showing Jigsaw in the iPhone Duo simulator: the board on the cover and the two-player layout open. The App Store notes also mention the Duo; the seller is Haruhiko Kishi, and the listing links back to MusicFlow.
Aarsh Innovations LLC
An audio travel guide, with the map beside the stories on the open Duo
Simulator verified: The developer, on the JollyTango blog on October 13, showing an unnumbered pre-release build in the iPhone Duo simulator in four screenshots and a 29-second recording. The maker is preparing the update for App Store review, aiming for October 23; the App Store version, 1.0.19, doesn't mention the Duo.
yudai hirose
A medicine reminder whose forms fit either Duo display, clear of the side status strip
Simulator verified: Yudai Hirose, the developer, in merged GitHub pull request 380, showing the medicine form in the iPhone Duo simulator, closed and open.
byteNine AS
A windowed desktop workspace on both Duo displays, with a half-folded layout to come
Simulator verified: The developer, in a 51-second video of the app in the iPhone Duo simulator posted on October 15, 2026, and on Reddit: PXS runs on both displays, and the upright desktop-and-touchpad layout is coming in the next update. App Store version 1.3 (released October 23, 2026) doesn't mention the Duo. The video's caption says it is the real app running in the Duo simulator.
Swift Fox Software LLC
A water tracker: log on the cover, open to see your progress beside the day's drinks
Simulator verified: Swift Fox, the developer, in an article on its blog on October 12, 2026, showing version 1.3.3 in the iPhone Duo simulator on iOS 27.1, placed in Apple's device frames. The App Store now has version 1.4.0, released October 19, 2026, whose release notes say "Improved iPhone Duo Support!" The 1.3.3 layout shown here was not on the store when the article was written.
bannzai
A secret manager with a repository sidebar on the open Duo
Simulator verified: The developer, bannzai, in GitHub pull request 88, showing the app in the iPhone Duo simulator closed and open, in promotional frames. The README says the app hasn't been released.
DanCo Worldwide LLC
A dice game with the dice stacked on the cover and the controls beside them open
Simulator verified: Dan Payne, the developer, in a GitHub commit on October 14, 2026, showing the game in the iPhone Duo simulator closed and open, in promotional frames. The App Store version is now 2.0, released October 15, 2026; its release notes describe a rebuild but don't mention the Duo.
Sejalben Bahadursingh Bihola
A voice recorder with the transcript beside its summary on the open Duo
Simulator verified: The developer, in a guide on the ThinkScribe site on October 9, 2026, with three screenshots of the app running closed and open. The App Store release notes for version 1.8 (released October 13, 2026) add iPhone Duo support.
Sipeng Gao
A handwriting trainer for Chinese characters with a roomier page open
Simulator verified: Doran Gao, in a YouTube video of simulator recordings posted on October 10, 2026 about adapting the app for the Duo (youtube.com). The app's bundle id, com.dorangao.hanziagain, carries the same name. The App Store seller is Sipeng Gao (id 6789671425). The current version is 2.0 (released October 16, 2026); its release notes don't mention the Duo, so the layout in the video may not have shipped yet.
兴华 范
A bike-sensor battery list closed, with each sensor's details beside it open
Simulator verified: flexih, in a post on X on October 11, 2026 with screenshots of the app on the Duo closed and open (@flexih on X). The app's bundle id, com.flexih.Sensor, carries the same name. The App Store seller is 兴华 范 (id 6504740377). Version 1.38 (released October 9, 2026) does not mention the Duo, and neither does the description.
Marcin Bieda
A clip-merging video editor with the preview on one half and your clips on the other
Simulator verified: Martin Depur, who posts about building Clipsana on X, in a video of the editor on the Duo simulator posted on October 11, 2026 while adapting it (@depurmartin on X). The App Store seller is Marcin Bieda D BEST (id 6816072409). Version 1.1.0 (released October 19, 2026) says it adds "layouts adapted for iPhone Duo" and a roomier editor on iPad; it does not describe the layouts.
Kathleen Tafel
A recipe app with ingredients beside directions, or two recipes side by side, when open
Simulator verified: The developer, Kathy Tafel, in a video on Bluesky of The Recipe Box on the Duo simulator on October 11, 2026 (bsky.app), made while merging the app's separate iPhone and iPad versions for the Duo. The App Store seller is Kathleen Tafel (id 414537274). Version 7.0.6 (released June 25, 2026) does not mention the Duo, and neither does the description, so it isn't out yet.
Liu Tao
A phone remote for AI coding agents, chat beside the code changes when open
Simulator verified: Liu Tao (LiuTianjie on GitHub), who makes the open-source LinkShell, has an iPhone Duo section on the LinkShell site (liutianjie.github.io) with simulator screenshots of each pose. The App Store release notes for version 2.0.2 (released October 8, 2026) say "为 iPhone Duo 做好准备" (ready for iPhone Duo). The App Store seller is Gaojiua Technology Beijing Co., Ltd., and the App Store description links Liu Tao's GitHub repository.
Harshil Shah
Health and fitness cards that spread into a wider grid on the open Duo
Simulator verified: The developer, Harshil Shah (@harshil), in a post on X with a video of Peak on the iPhone Duo simulator, closed and open (@harshil on X). The App Store seller is Harshil Shah (id 6443923491). Version 5.5 (released October 22, 2026) says Peak is "now ready for iPhone Duo!" and that on the inner display "the dashboard shows up to 4 columns, and the workouts tab can show your list of workouts and workout details at the same time".
Ein Kaung
Recent searches on the cover, the antonym pair beside the list open
Simulator verified: The JEB account posted three screenshots of the app in the iPhone Duo simulator (@JEB4UTweets on X). Closed, the cover is the search history. Open, a grammar table or the search results sit on the left and the entry on the right. On the App Store the app is JEB Antonyms (id 6445823255). Those release notes do not mention the Duo.
Tomás Feitoza Martins
Scrobble the track you're hearing on cover or open
Simulator verified: Tomás Martins (@TommyCadle) posted Duo simulator shots of AirScrobble on the outer and inner displays (@TommyCadle on X). The screenshots are from the iPhone Duo simulator.
Klemens Strasser
A puzzle for two opposite movers, with one grid on each half when the Duo opens
Simulator verified: The developer, Klemens Strasser, in a 76-second recording made in the iPhone Duo simulator, closed and open (@klemensstrasser on X). The App Store version dates from 2023 and doesn't mention iPhone Duo. Not yet stated as released.
Streaks and a month of photos on the left half, your journal entries on the right
Simulator verified: 友才, maker of Ben, in a post on X showing the app adapted for the Duo in the simulator (@zmangmor on X). The App Store page does not mention the Duo.
ChakMing Wong
The icon and its layers on one half, the chosen layer's settings on the other
Simulator verified: The developer, MING (ChakMing Wong), in a post on X with a video of BetterAppIcons 27.2 on the Duo simulator, saying it is designed for iPhone Duo (@1998design on X). The app is no longer listed on the App Store: its old page (id 1532627187) now redirects to the storefront's Today page, and the iTunes lookup returns no result.
Steale LLC
Breathing and focus sessions in every Duo orientation
Simulator verified: Fabio (@abduzeedo) showed Calmaria on the Duo simulator closed and open, in each orientation, and says it is almost ready to ship (@abduzeedo on X).
PUNCHMAN, LLC
Chess and its fist fights on the cover; unfold mid-fight and the brawl fills the screen
Simulator verified: The developer account @COMBATCHESS, in a 28-second recording made in the iPhone Duo simulator: a match on the cover, the phone opened mid-fight so the brawl fills the wide screen, then folded shut back to the board (@COMBATCHESS on X). The current version, 2.1 (October 10, 2026), has release notes that say 'Version 2.1 : iPhone Duo now supported'.
Half-folded, the picture plays on the top half and the controls drop to the bottom
Simulator verified: The developer, Liu, in a post on X showing work in progress on the half-folded layout in the simulator (@strangeliu on X). The App Store release notes for version 2.2.0 (released October 11, 2026) say only "Optimized for iPhone Duo."
SPINNERS
Recipes on the cover, photo beside the steps when half-folded
Simulator verified: Kaz Motoyama (@kudakurage / Spinners) showed COOKY on the Duo simulator closed and half-folded (@kudakurage on X).
Geokiks Corporation
Incident videos on the cover; open, each video sits beside its map or comments
Simulator verified: Geokiks Corporation, the developer, in a post on X with a video of GeoKiks in the iPhone Duo simulator (@Geokikscorp on X). The App Store release notes for version 4.4 (released October 8, 2026) say "Designed for iPhone Duo. See what's happening and where it's happening, side by side."
Fernando Bunn
Your Mac's desktop on the cover or filling the open Duo
Simulator verified: Fernando Bunn (@fcbunn) posted Glassy Desk on the Duo simulator, closed and open (@fcbunn on X).
A rental dashboard on the cover or across the open Duo
Simulator verified: Jaz Singh (@jazkng), who builds Houseshare, posted it on the Duo simulator closed and open (@jazkng on X).
Lanely Labs LLC
Countdown editor on the left half, a live preview of the widget on the right
Simulator verified: Ryan Seilhamer, founder of Lanely Labs, in a post on X showing the app on the Duo simulator (@rseilham on X). The App Store release notes for version 2.1 (released October 13, 2026) say only "Update for iPhone Duo."
Subhajit Gorai
Deep-work focus on the cover; timer beside the start card when open
Simulator verified: Subhajit Gorai (@sage_mastermind) posted Duo simulator media of MydenFocus closed on the cover and open across the crease (@sage_mastermind on X). The App Store seller is Subhajit Gorai; the listing name is MydenFocus: Focus & Meditate and does not mention the Duo yet.
riedel.wtf apps
Customize beside the Intervention Gallery when open, the gallery alone closed
Simulator verified: Seb Vidal, an iOS developer on the one sec team, posted one sec on the Duo simulator, opening and closing, while asking about a SwiftUI bug that hides the back button closed (@SebJVidal on X). The release notes for version 6.1 (released October 20, 2026) open with "one sec's big iPhone Duo update is here!"
Donovan Montoya
Audiobook player whose reader shows two facing pages on the open Duo
Simulator verified: Donovan Montoya, the developer, merged Duo support into the app's public code (github.com) and later crease fixes with Duo simulator screenshots of the reader (github.com); the changelog listed it for version 1.3.0. The App Store version, 1.3.1 (released October 19, 2026), does not mention the Duo in its release notes.
France Pastrana
A globe beside your income and spending when open, the lists on the cover when closed
Simulator verified: France Pastrana, the developer, in a post on X with a video of Payday in the iPhone Duo simulator, saying it is being optimized for the Duo (@heyfrance_ on X). The App Store page does not mention the Duo yet.
CHEN GUAN-JHEN
A meal's photo and macros on the cover, the same read-out in one column when open
Simulator verified: CHEN GUAN-JHEN, the developer, in a post on X with a video of Plateknow in the iPhone Duo simulator, saying it supports the Duo (@CGJhen on X). The App Store page does not mention the Duo.
Ebooks read as a two-page spread, one page either side of the crease
Simulator verified: The developer, Zen Chan, in a post on X showing the reader adapted for the Duo in the simulator (@7enChan on X). The App Store release notes for version 1.4.6 say it is "prepared for iPhone Duo".
Shubham Singh
Party games whose card deck waits on the cover and deals to the whole table when open
Simulator verified: Shubham Singh, the developer, in a 13-second recording of work-in-progress iPhone Duo support in the Xcode simulator: the deck on the cover, then the open phone shuffling and dealing a hand to four players (@Shubham_iosdev on X). The App Store page does not mention the Duo.
Hyun Sik Kim
Your step-powered pixel pet on the cover, then beside workouts or outfits when open
Simulator verified: Derek Kim (@derekhskim), whose X bio links to Ambly, posted a simulator video of Ambly closed and open on the iPhone Duo and says the app is getting early support for it (@derekhskim on X). The App Store lists the seller as Hyun Sik Kim and does not mention the Duo yet.
Josuam Collazo
Today's plan on the cover, and open flat, the plan beside events and overdue tasks
Simulator verified: Josuam Collazo, the developer (on X as JC Mobile App Studio, @JCMAppStudio; the App Store seller is JC Mobile App Studio LLC), posted screenshots of DayCast on the iPhone Duo, saying it is still being tuned in the simulator (@JCMAppStudio on X). The App Store page does not mention the Duo yet.
Junecloud LLC
Parcels on the cover, a parcel's history beside its map when open
Simulator verified: The app's account, @deliveries_app, posted a Duo simulator video of a new layout for the Duo (@deliveries_app on X). The release notes for version 9.7.2 (released October 20, 2026) say "Added support for iPhone Duo."
Huang Lizhuo
Language-learning podcasts with a side rail closed, episodes beside the list open
Simulator verified: The developer (@huang4fun on X) posted EchoPod's Duo side navigation in the simulator (@huang4fun on X), and a later post says the new version adapted the bar (@huang4fun on X). The current App Store release notes (version 1.2.16) don't mention the Duo.
Faruq Rasid
Ink one page, close the Duo to print it on the facing page
Simulator verified: The developer (@ruqqq on X) posted a 45-second recording of Foldink running in the iPhone Duo simulator, with the phone folding and unfolding between the open pages and the cover (@ruqqq on X). The App Store page doesn't mention the Duo yet.
Modum B.V.
A concert history that turns like a book's pages on the open Duo
Simulator verified: The developer, Hidde van der Ploeg, posted a Duo simulator video of Gigs (@hiddevdploeg on X) and later said it would be available on day one (@hiddevdploeg on X). Version 2.1.1 (released October 17, 2026) says Gigs fully supports iPhone Duo, with layouts that adapt to compact, portrait, horizontal and laptop modes.
Chee Ket Yung
Habit cards on the cover, a daily progress chart beside them when open
Simulator verified: The developer (@techchee on X) posted a recording of HabitPath running in the Xcode iPhone Duo simulator, closed and open, after updating its dashboard for foldables (@techchee on X). The App Store notes for version 3.1.0 list full support for the iPhone Duo screen layout.
Juan David Salazar
Open, your items sit beside the chosen product, with stores and locations in a sidebar
Simulator verified: The Inventury App account on X, with photos of Inventury running in the iPhone Duo simulator in Xcode 27.1 RC, saying its iPhone Duo UI is ready (@InventuryApp on X). The App Store release notes for version 1.0.4 (released October 10, 2026) add iPhone Duo: half-folded and standing, Items shows the item on top and the list below, with a small photo next to its prices.
Bechir Arfaoui
Next shot on the cover, shot details and weight chart when open
Simulator verified: The developer (@BechirArfaoui on X) posted a video of Jabby running in the iPhone Duo simulator (@BechirArfaoui on X). The App Store release notes for version 1.2.30 (released October 12, 2026) say "Jabby now fits the iPhone Duo, folded or opened out."
Muhammed Tanriverdi
The hour's dial beside the whole day's planetary hours
Simulator verified: The app's account (@PlanetaroApp on X) posted a Duo simulator video and said it was working to have it ready for day one (@PlanetaroApp on X). Version 2026.6.1 (released October 10, 2026) says: "Ready for iPhone Duo: unfold it and Planetaro spreads out — the current hour and the full list of planetary hours side by side, and the Moon screen split into phases and Void of Course."
Christopher Danks
A holiday rental's locks, pool and guests, from the cover to the open Duo
Simulator verified: The developer, Chris Danks, said on X that RentalHelm is ready for iPhone Duo, with a simulator video (@christesla on X). The App Store release notes for version 1.2.3 (released October 16, 2026) say iPhone Duo is now supported: a full-screen layout when unfolded, and a header that works around the front camera on the closed screen.
John Kalinowsky
Your latest MPG on the cover, the trend and service reminders beside it
Simulator verified: The developer (@_JKNFT_ on X, who runs @simplefuelapp) posted a video of SimpleFuel's layout in the iPhone Duo simulator (@_JKNFT_ on X). The App Store page doesn't mention the Duo yet.
Next Wave Limited
A random record from your Discogs shelf, cover beside its details when open
Simulator verified: 61 (@liuyi0922 on X) posted a Duo simulator video of SnapVinyl and says they are still working on its iPhone Duo version (@liuyi0922 on X). The App Store page does not mention the Duo yet.
Fifteen Jugglers Software
A sun dial whose tiles step off the crease as you fold
Simulator verified: The developer, Engin Kurutepe, posted a video of SolarWatch's layout going from open flat to half-folded (@ekurutepe on X) and later a TestFlight build with iPhone Duo support (@ekurutepe on X).
TsuzuKit
A poop log with a boxing mascot, from the cover to the open Duo
Simulator verified: The developer, ツヅキ (@tsuzuki817 on X), posted a Duo simulator video of Unchikun (@tsuzuki817 on X). The App Store page doesn't mention the Duo yet.
Chidi Emeh
Routines on the cover, and open, each step up top with a big Done button below
Simulator verified: The developer, on X as Chilly Bean (@chidiemeh184), posted a Duo simulator video and screenshots of the app's iPhone Duo support and a new "counter mode" (@chidiemeh184 on X). The App Store release notes for version 1.1 (released October 19, 2026) say it is ready for iPhone Duo, with layouts for folded and unfolded screens.
Aleksei Nikitin
One Berlin pick on the cover, a row of cards under the map when open
Simulator verified: The developer, Aleksei Nikitin, in a post on X with a video of the updated app on the iPhone Duo simulator (@_alnikitin_ on X). The App Store notes for version 1.1 (October 4, 2026) also mention the new iPhone Duo layouts.
Inside Internet
PS5 Remote Play with the game above the fold and a touch controller below
Simulator verified: A post in the app's own subreddit, r/Asobi, by u/inchenzo, who also posts the app's release notes there, saying Asobi will support iPhone Duo at launch, with simulator screenshots (reddit.com). Version 1.6 (released October 22, 2026) lists "Added iPhone Duo support" in its release notes.
CoreBits LLC
Checkbook register that opens into a month calendar of payments beside your budgets
Simulator verified: Matt Corey, who makes Bills to Budget, in a Mastodon post with iPhone Duo simulator screenshots, saying there is work to do to support the Duo cleanly (iosdev.space). The App Store seller is CoreBits LLC.
Kingfisher Technologies LLC
Its scripture reader shows one page when closed and a two-page spread when open
Simulator verified: The app's own Reddit account (u/Catholic_DeVice), in a post with a simulator video saying the app is ready for iPhone Duo (reddit.com). The app's site, catholicdevice.com, links this App Store page.
Code editor that widens to line numbers, minimap and tabs on the open screen
Simulator verified: The developer, posting as u/Ok-Welder-8005 in r/iosdev with a simulator video of CodeMate on iPhone Duo (reddit.com). The post links this App Store page.
Nicholas Dapolito
Drone flight score on the cover, forecast and daylight beside the scene when open
Simulator verified: Nicholas Dapolito, the developer, in a Bluesky post with a first look at Flyby in the iPhone Duo simulator (bsky.app). The App Store release notes for version 1.2.2 (released October 15, 2026) say every tab, the map and Settings make use of the bigger screen, that standing the Duo half-open gives a Field View, and that details open beside what you're looking at.
Michael Rowe
Keeps track of the cards you send, with occasions beside the card when the Duo opens
Simulator verified: Michael Rowe, the developer, in a Mastodon post with a recording of Greeting Tracker on the iPhone Duo simulator, saying it works and there are still a few things to do (mstdn.social). The App Store page does not mention the Duo.
Charles Etzel
Daily word game whose grid and score rearrange for every fold and turn
Simulator verified: The developer, Chad Etzel, in a 30-second recording made in the iPhone Duo simulator, showing the main game view through the Duo's screens, rotations and poses (@jazzychad on X). Not yet stated as released.
Orlando Gabriel Herrera
Magic: The Gathering decks and playtests that spread out to more card columns when opened
Simulator verified: Orlando Gabriel Herrera, the developer, in Mastodon posts with screenshots and recordings of Lion's Eye on the iPhone Duo simulator (iosdev.space). The App Store release notes for version 6.4.4 (released October 19, 2026) say Lion's Eye adapts to the folded and unfolded displays.
Tuxedo Lab LLC
Budget forecast with a side rail and a grid of cards when the Duo is open
Simulator verified: Its maker, Julio, in a YouTube live stream reworking NEKO's screens for the iPhone Duo simulator (youtube.com). Version 8.8.4 (released October 15, 2026) says: "Now you can use NEKO on iPhone Duo, folded or open, with your tabs and actions right where your thumb is."
Mario Guzmán
Portland transit map whose sidebar floats over the map, then takes a half of the fold
Simulator verified: Mario Guzmán, the developer, in a Mastodon post with screenshots of PDX Transit on the iPhone Duo simulator, open flat and half-folded (mastodon.social). The App Store lists the seller as Mario Guzman. The App Store page does not mention the Duo.
3Bytes Inc.
Social step counter with walk videos beside their comments when the Duo is open
Simulator verified: Prayag, a Rivlo co-founder, in an X post with a video of Rivlo on the iPhone Duo simulator, saying the app is getting ready for iPhone Duo (@prayagpatel_ on X). Version 5.2 (released October 9, 2026) introduced Rivlo for iPhone Duo, with the App Store description and release notes describing the layouts.
Wei-Cheng Ling
Local file sharing, with the address on one side and your files on the other when open
Simulator verified: The developer, posting as 不想上班的胖豹 on X with a video of Share Server on the iPhone Duo simulator (@riddle_ling on X). They say they had Codex add iPhone Duo support and will submit it once Xcode 27.1 is out of beta, so the App Store version may not have it yet.
BaconWorks, LLC
Markdown notes, the note list moves in beside the note you're writing when open
Simulator verified: The Smolpad account on Bluesky, with iPhone Duo simulator screenshots closed and open, saying Smolpad is ready for the Duo at launch (bsky.app). Smolpad's blog post of September 10, 2026 says the two-column layout shipped in version 1.3.5 (smolpad.com).
Phanith Ny
Monthly spending lists on one side, that month's transactions on the other
Simulator verified: The developer, posting as u/Friendly-Sound-1745 in r/spendlists with a simulator video of SpendLists' iPhone Duo support (reddit.com). Not yet stated as released.
Christian Skorobogatow
Battery forecasts side by side when open, and a charging horizon that sits on the fold
Simulator verified: Christian Skorobogatow, the developer, in a recording of Unplugged running in the Xcode iPhone Duo simulator on October 5, 2026 (@chris_iosdev on X), closed and open with the Horizon charging animation; he said version 4.1.0, then unreleased, was made for iPhone Duo. Version 4.1.0 is now on the App Store (released October 7, 2026); its release notes describe Horizon, a charging animation made for big and foldable screens, and say larger displays use the extra width, without naming the Duo.
Harry Ng (Build with Harry)
Daily planner that puts your lists and projects beside the day when the Duo opens.
Simulator verified: Harry Ng, the developer, in a Mastodon post with a screen recording of a first draft of Aida's Duo layout (mastodon.social). The App Store seller is Build with Harry. The recording is from the iPhone Duo simulator.
Sharif El Fatatry
Flight-sim companion whose layout reflows for every fold of the Duo.
Simulator verified: Heavy64 (@Heavy64Lab), in a post on X, and the App Store release notes for version 1.5 (released October 15, 2026), which say Avionics Buddy now supports iPhone Duo. That account's site, avionicsbuddy.com, names Sharif El Fatatry as the author and links this App Store page; Sharif is also the seller. The post's video is a capture of the iPhone Duo simulator set among captions.
Sören Gade
Network monitor that keeps the download and upload graphs in view in every pose.
Simulator verified: Sören Gade, in a Mastodon thread (mastodon.social) showing Bandwidth Monitor in the iPhone Duo simulator. The App Store seller is Soeren Gade.
Juan Arzola
Flashcards whose score buttons stay on the lower half when the phone sits folded.
Simulator verified: Juan Arzola, in Mastodon posts (sfba.social and sfba.social). The App Store seller is autorelease LLC. The first post has a recording of the iPhone Duo simulator.
Selkie Design Ltd
Day planner that opens into side-by-side day columns for a trip.
Simulator verified: Joseph Humfrey, in a Bluesky post (bsky.app) showing it in the simulator, and Selkie Design in a submission to FoldHunt on October 26, 2026. The App Store seller is Selkie Design Ltd, whose site names Joseph Humfrey as the maker. The release notes for version 1.3.0 (released October 10, 2026) say: "Support for both iPad AND iPhone Duo!"
Oleg Plugaru
Quit-smoking tracker that opens into a flip clock beside craving tools.
Simulator verified: Oleg Plugaru, the App Store seller, in a post on X. The X profile links to this App Store page. The post's screenshots are from the iPhone Duo simulator.
Satoshi Kojima
PDF reader that lays a book's spread across the fold, binding on the hinge.
Simulator verified: Satoshi Kojima, the developer, on the shelff site (skoji.dev), with pictures from the iOS 27.1 beta simulator. Version 1.8 added iPhone Duo support and is on the App Store: 1.8.1 (released October 15, 2026) notes that in book pose the cover now sits on one side of the fold.
Daniel Devesa Derksen-Staats
Text to speech reader that keeps the spoken line highlighted as the phone opens.
Simulator verified: Dani Devesa Derksen-Staats, in a Mastodon post (iosdev.space). The App Store seller is Daniel Devesa Derksen-Staats. The post's alt text says the screen recording is of Xarra in Xcode's iPhone Duo simulator.
Navid Gooranourimi
A comic reader that puts a page on each side of the fold, with a library sidebar
Simulator verified: Navid Gooranourimi, the developer, in screenshots of ComicFlow on the open display of the iPhone Duo simulator, on the app's site. The App Store release notes for version 3.5 describe the Duo layouts; the current version is 3.7, released October 19, 2026.
Tomonori Shimizu
A station-walking app with your page or the rankings beside the map when open
Simulator verified: The developer, in a post from the app's X account on October 11, 2026 with three pictures of it open (@machimegux on X), and in the App Store release notes for version 2.7.0: open, My Page or the rankings sit on the left and the map on the right, and nearby restaurant results open beside the map too.
COMedia Ltd
IPTV and podcasts in one player, updated for the Duo
Simulator verified: The developer, in the App Store release notes for version 3.6 (released October 9, 2026), which add iPhone Duo support, and in a post from the app's X account on October 11, 2026 with a picture of it on the cover (@TVPods_app on X). The App Store seller is COMedia Ltd (id 6758083334).
Cocoa Academy LLC
A TV show tracker whose cards step off the crease when the Duo half-folds
Simulator verified: The developer, Craig Clayton (@thedevme), in the Adapting a Real App for iPhone Duo series on the Design to SwiftUI channel, Episode 1 on toolbars (youtube.com) and Episode 2 on the fold (youtube.com), which link the app. The App Store seller is Cocoa Academy LLC (id 6476959214). The release notes for version 3.0.5 (released October 16, 2026) say it is "Optimized for iPhone Duo" and now fits both the outer and inner displays. The videos show the app in the iPhone Duo simulator.
MBDesign Studio Private Limited
A spending dashboard that spreads into two columns of cards on the open Duo
Simulator verified: The developer, Mehul Bhargava (@mehulbhargava_), founder of Ruply, in posts on X with pictures of Ruply on the open Duo simulator (@mehulbhargava_ on X and @mehulbhargava_ on X). The App Store seller is MBDesign Studio Private Limited (id 6759892536), on the Indian App Store. The release notes for version 3.0.2 (released October 15, 2026) say it is made for iPhone Duo, with Splits showing the list and detail side by side and Analytics in two columns.
Norihiro Otsuki
Today's photo and the same street a thousand years on, side by side when open
Simulator verified: The developer, writing as Dear AI Designer, explains the iPhone Duo support on note (note.com), and the App Store release notes for version 1.4 (released October 8, 2026) say it supports iPhone Duo. The App Store seller is Norihiro Otsuki (id 6787385901). The developer tested it in the Xcode simulator, and the screenshot in the article is from the iPhone Duo simulator.
Hangzhou Floating Island Technology Co., Ltd.
The Perfect Day jar on the left half of the open Duo, counts and calendar on the right
Simulator verified: Shuhari, an iOS engineer at Grow (per nsshuhari.me, which links the app; X bio "take care, @trygrowapp"), in a post on X with a Duo simulator screenshot (@NSShuhari on X). The release notes for version 2.7.0 (released October 21, 2026) say: "Grow for iPhone Duo is here!"
Ganguk Kim
A pixel weather cat on one half and the hourly forecast on the other, open flat
Simulator verified: The maker, @builderalexkim on X, whose bio links to Meowcast on the App Store, posted two Duo simulator screenshots of an iPhone Duo version and said it was coming soon (@builderalexkim on X). The App Store description for version 1.8.10 (released October 18, 2026) says on iPhone Duo, unfold it to see the cat on the left and the forecast or shop on the right.
Vedantha Kartheek Thirumala Sreenivasan
A photo album size made for the Duo, with one photo on each side of the crease
Simulator verified: Vedanth, the developer, in a post on X with a screenshot of the Duo album size in the iPhone Duo simulator (@vedanthk_ on X). The App Store page does not mention the Duo yet.
Random Projects, LLC
A to-do list for bookmarks, with actions and tags beside the links
Simulator verified: The developer, Josh Hrach, posted DoMarks on the open Duo simulator on Mastodon and said it should be Duo ready on day one (iosdev.space). Version 4.1 (released October 19, 2026) adds iPhone Duo support.
MintC Inc.
Files or code on the left, your terminal on the right when the phone is open
Simulator verified: MintC Inc., the developer, in a post on X announcing Intode 1.2.7 with two panes when unfolded on Android foldables and iPhone Duo; its video includes an iPhone Duo simulator shot open flat (@mintcinc on X). The App Store release notes for version 1.2.7 (released October 7, 2026) describe the same two-pane layout: files or the editor on the left and the terminal on the right, keeping the pane you were using when folded.
Oluwaseun Akintade
Receipts and warranty countdowns on the cover, as icons, a list or a gallery
Simulator verified: The developer, Akintade Oluwaseun, posted a Duo simulator video of Kept and said it is coming to iPhone Duo (@tadeDev_ on X). The App Store page doesn't mention the Duo yet.
Barry Brown
Ancient Greek word list on one side, the entry on the other when open
Simulator verified: The developer, Barry Brown, posted it on the iPhone Duo simulator and said the next version will be ready for the Duo, with a TestFlight beta that has wider screen support (@RezOtaku on X).
Chee Ket Yung
Viewfinder beside your photo journal, with controls for either hand
Simulator verified: The developer (@techchee on X) posted a Duo simulator video of RetroCam's split layout (@techchee on X), and the App Store release notes list full support for the iPhone Duo screen layout.
Alex Parrales
Medication tracker with the pill on one half and its schedule on the other when open
Simulator verified: The developer, posting as Alex Jordany on Bluesky (bio: app developer at dosekeeper.com), with four iPhone Duo simulator screenshots of DoseKeeper open flat, and saying Alex is still working out what belongs on each side (bsky.app). The App Store and dosekeeper.com name the developer Alex Parrales. Not stated as released.
Rudrank Riyam
Gradient maker, with the gradient on one side and its tools on the other when open
Simulator verified: Rudrank Riyam, the developer, in a Bluesky post with a screenshot of Meshing in the iPhone Duo simulator (bsky.app). Version 3.0 (released October 7, 2026) adds "a split workspace on iPad and the expanded iPhone Duo display", its release notes say.
Domaincord Ventures LLC
Your social handles in profiles, with the list beside the accounts when open
Simulator verified: The developer, Alex Crocker, in a Mastodon post with a simulator screenshot, saying Alex moved Profile Bud to a standard sidebar layout so it supports iPhone Duo at a base level (mastodon.social). Not stated as released.
James Thomson
Calculator whose keys split along the fold, then all drop to the lower half like a laptop.
Simulator verified: James Thomson, in his "PCalc on iPhone Duo" Mastodon series (Day 5: mastodon.social). The App Store seller is TLA Systems Ltd. The clip's alt text says it is the iPhone Duo simulator.
KIEN WEI CHOO / Modern Logic Tech Solutions
A book and comic reader that keeps your place as the Duo folds
Simulator verified: The developer, in the App Store release notes for version 2.1.15 (October 13, 2026) and a Duo preview video on its website (October 14, 2026): a book keeps its place as the phone folds, and open, the Duo shows two pages side by side. The video shows the layouts in a simulator. Specific fold adaptations are not yet documented.
Gerd Castan
Map of places to eat and spend time outdoors, with map controls for the Duo
Simulator verified: Gerd Castan, the developer, in a Bluesky post with a simulator screenshot of the closed phone (bsky.app), and in the App Store release notes for version 1.7.1 (released October 13, 2026), which add iPhone Duo map controls: callouts and the public transport timetable. Specific fold adaptations are not yet documented.
Stewart Lynch
Keeps your links and contact details, with a side bar closed and a tab bar open
Simulator verified: The developer, Stewart Lynch, in a Bluesky post with a simulator video of a prototype My Links layout for iPhone Duo (bsky.app). The layout shipped in version 2.0 (released October 16, 2026), whose release notes say: "Full support for the new iPhone Duo display and poses". Specific fold adaptations are not yet documented.
Matt Birchler
Picture logic puzzle with a bigger board on the wider open display
Simulator verified: The developer, Matt Birchler, in a blog post with a screenshot of Nonogame running on the open iPhone Duo in the simulator, beside the same board on the closed phone (birchtree.me). Specific fold adaptations are not yet documented.
Chris Lawley
Agenda and daily note that the developer is planning to rework for the Duo
Simulator verified: The developer, Chris Lawley, in a Bluesky post with simulator screenshots, saying Parchment works acceptably on iPhone Duo and that Chris plans a nicer experience (bsky.app). No Duo-specific layout yet. Specific fold adaptations are not yet documented.
Subtitle file tools in one column closed, stretched across the open display
Simulator verified: The developer's YouTube channel Edge Mac, in a video recording the app being adapted for iPhone Duo in the simulator (youtube.com). Specific fold adaptations are not yet documented.
LeanCode
Conference app with the agenda beside the talk, and the map above the venue, when open.
Simulator verified: LeanCode, the developer, in a Bluesky post with a video of the app on the iPhone Duo simulator (bsky.app). They say it took one day to get their Flutter app ready for iPhone Duo. Specific fold adaptations are not yet documented.
Samuel Yanez
Goal tracker with a sidebar of goals beside the one you picked when open.
Simulator verified: Samuel Yanez, the developer, in a Bluesky post with a video of Moku on the iPhone Duo simulator (bsky.app). Samuel says Moku now has split-view navigation and adaptive layouts for iPhone Duo and iPad. Specific fold adaptations are not yet documented.
Justin Clarke-Salt
UK train times, one route on the cover, two routes side by side when open.
Simulator verified: Justin Clarke-Salt, the developer, in a Mastodon post with screenshots of Next3Trains on the iPhone Duo simulator closed, opening and open (infosec.exchange). Specific fold adaptations are not yet documented.
Łukasz Rutkowski
Mastodon app with posts beside their photos when open, and two windows in Split View.
Simulator verified: Łukasz Rutkowski, the developer, in a Mastodon post with screenshots of Pipilo on the iPhone Duo simulator (mastodon.world). Łukasz says the iPad support carried over with minor padding issues, and a reply shows two Pipilo windows in Split View. Specific fold adaptations are not yet documented.
Jeremie Berduck
The day's weather and tides on the cover, with the forecast and UV index beside them open.
Simulator verified: Jeremie Berduck, the developer, in a Mastodon post with a video of Shoobie on the iPhone Duo simulator (iosdev.space), saying it is ready for iPhone Duo. The same post is on Bluesky. Specific fold adaptations are not yet documented.
Angela Vazquez Dominguez
Calm dot-pairing logic puzzles across two pages, with a controller when half folded
App Store confirmed: Angela Vazquez Dominguez, the developer, in submissions to FoldHunt on October 25 and 27, 2026, and in a post on X on October 24, 2026, with a promotional video of rendered devices. The App Store seller is Angela Vazquez Dominguez. Puntokus came out on October 20, 2026, and its App Store description has a section on iPhone Duo. Fold-aware layouts need iOS 27.1.
Torn Metal LLC
Hand over your phone to show photos without your whole camera roll, a page on each side
App Store confirmed: Torn Metal LLC, the developer, in a submission to FoldHunt on October 24, 2026, and on the TakeALook website. The App Store seller is Torn Metal LLC. The release notes for version 2.1 (released October 25, 2026) say 2.0 added iPhone Duo support and describe the book, tabletop and tent layouts. The YouTube short we watched is a render.
Tenth Room Studio
A puzzle box game where the Duo is the box: shut to read the lid, open a crack to peek
App Store confirmed: Tenth Room Studio, the one-person studio of Kane Vu, in a submission to FoldHunt on October 28, 2026, and on the Foldlock website. The App Store seller is Ky Anh Vu. Foldlock came out on October 26, 2026, and its App Store description says it was built for iPhone Duo. The website's pictures match the Duo's screen sizes but show no status bar.
Tomatique
A to-do list app that opens into its iPad sidebar, your lists beside the one you're on
App Store confirmed: Tomatique, the developer, in a submission to FoldHunt on October 23, 2026, describing the cover, open, half-folded and Split View layouts. The App Store seller is Tomatique, Lda. The release notes for version 1.8 (released October 10, 2026) say: "Ready for iPhone Duo."
Artem Novichkov
Backgammon where the fold is the bar and a snap of the hinge throws the dice
App Store confirmed: Artem Novichkov, the developer, in a submission to FoldHunt on October 23, 2026, and in a post on X with a promotional video the same day. The App Store seller is Artem Novichkov. Nardy came out on October 23, 2026, and its App Store description has a section on iPhone Duo. The video and the website's pictures show the game on a rendered phone, not in the simulator.
Jorick van Meijeren
An interval timer that stands half-folded, the countdown up and Pause and Skip in reach
App Store confirmed: Steed, the name Jorick van Meijeren publishes apps under, in a submission to FoldHunt on October 23, 2026. The App Store seller is Jorick van Meijeren. The release notes for version 2.8 (released October 22, 2026) say: "Ready for iPhone Duo. The screen got bigger; the countdown didn't."
David Turk Creative
Sixteen party games for one phone, where every fold of the Duo starts a different game
App Store confirmed: David Turk of David Turk Creative, the developer, in a submission to FoldHunt on October 20, 2026. The App Store description says that on iPhone Duo every fold has its own games: close it, stand it up like a tent, open it like a laptop or lay it flat. David Turk wrote again on October 23 to say it's out. Version 1.0.1 came out on the App Store on October 23, 2026.
Portal Labs Ltd
Moving nature scenes for focus and sleep that open like a window as you unfold the Duo
App Store confirmed: Stu at Portal Labs Ltd, the developer, in a submission to FoldHunt on October 20, 2026, in an email to FoldHunt on October 22 saying the Duo version is out, and in a post on X with a video of a waterfall scene on a rendered Duo (@Portal_Labs on X). The release notes for version 4.1.0 (released October 21, 2026) say unfolding the Duo is part of the experience, and that the Focus and Pomodoro timers, Sleep Timer and Wake Up Alarm were redesigned for every pose: closed, unfolded, seated and standing.
Yash Banka
Markdown reader: outline beside the page, Read Aloud and Summarize in every pose
App Store confirmed: Yash Banka, the developer, in a submission to FoldHunt on October 18, 2026, saying Marko was checked in the Xcode 27.1 iPhone Duo simulator in every pose and orientation, and not yet on a real Duo. The release notes for version 2.1 (released October 17, 2026) say Marko now fills both displays of the iPhone Duo, in every pose. The pictures on the site and in the App Store show other devices.
Moosa
A busy sign that follows your calendar: stand the Duo as a tent to face the room
App Store confirmed: Moosa, the developer, in a submission to FoldHunt on October 24, 2026. The App Store seller is Moosa BV. Callsign came out on October 23, 2026, and its App Store description has a section on iPhone Duo. The website says it was designed for iPhone Duo; it has no captures of the app running.
Apps for the Living
Visual, audio and haptic bilateral stimulation that adapts to how you hold the Duo
App Store confirmed: Apps for the Living, the developer, in a submission to FoldHunt on October 26, 2026, and on the EMDR website. The App Store seller is Bas Oppenheim. The release notes for version 2.5.2 (released October 28, 2026) say EMDR 2.5 introduces layouts optimized for iPhone Duo. The website's Duo video is a render.
Ivo Junior Bettini
A music box: open the Duo and the lid lifts and the ballerina dances; fold it and it stops
App Store confirmed: Ivo Junior Bettini, the developer, in a submission to FoldHunt on October 24, 2026. The App Store seller is Ivo Junior Bettini. Lullabox came out on October 22, 2026, and its App Store description has a section on iPhone Duo; the support page says the hinge is the lid.
Abdullah Malik
Official fuel prices and UK EV chargers, with the map and the list split at the fold
App Store confirmed: Abdullah Malik, the developer, in a submission to FoldHunt on October 25, 2026. The App Store seller is Abdullah Malik. The release notes for version 2.1 (released October 24, 2026) say Nozzle is made for iPhone Duo and describe the layouts.
App Rover
Pilates at home: the video on one half of the Duo, the timer and controls on the other
App Store confirmed: App Rover, the developer, in a submission to FoldHunt on October 24, 2026. The App Store seller is AppRover. The release notes for version 1.1.3 (released October 18, 2026) list native iPhone Duo support: fold, unfold or rotate without losing your workout progress.
Lion Glow
Two-player trivia on one phone: open it to split the screen, close it to pass it
App Store confirmed: Lion Glow, the developer, in a submission to FoldHunt on October 26, 2026, saying it was checked in the iPhone Duo simulator. The App Store seller is Lion Glow Pte. Ltd. The release notes for version 1.1.0 (released October 27, 2026) say it is made for iPhone Duo.
Alan Brooks
A calm, free word puzzle: use every letter, and shut the Duo to send the letters to sleep
App Store confirmed: Alan Brooks, the developer, in a submission to FoldHunt on October 27, 2026. The App Store seller is Alan Brooks. The App Store description says nothing sits in the fold on iPhone Duo and the letters have a surprise for when you close it. The website shows the Duo only in a line-up of devices.
CNN Interactive Group, Inc.
CNN's forecasts and radar, with video that keeps playing as you unfold the phone
App Store confirmed: CNN, the developer, in a submission to FoldHunt on October 23, 2026, sent from a CNN address, saying version 1.12 adds full iPhone Duo support. The App Store seller is CNN Interactive Group, Inc. The release notes for version 1.12 (released October 22, 2026) say: "We now support iPhone Duo!" The app is on the US App Store only.
Happiest LTD
Sleep stories and sounds, with a bedside clock in a tent and a mixing desk half-folded
App Store confirmed: Jenna Clarke, from the team behind Sleepiest, in an email to FoldHunt on October 20, 2026, and in a press release that day saying the free update is available from October 23, the day iPhone Duo goes on sale. The press pack's pictures of the Duo are device renders. The App Store seller is Happiest LTD. The release notes for version 17.63 (released October 19, 2026) describe the Duo features: a bedside mode in a tent, the play screen and a mixing desk split across the half-fold, and wider layouts open flat.
Brian Corrieri
A monster lives in your Duo: eyes on the cover, teeth inside, and it chomps when you fold
App Store confirmed: Brian Corrieri of Vision First Studio, the developer, in a submission to FoldHunt on October 20, 2026, and in a post on X with a video on a rendered Duo (@Brian_Corrieri on X). The App Store description says the jaws follow the hinge and snapping the phone shut makes it chomp. Version 1.0.1 came out on October 23, 2026.
Ryan Calpin / Calpin Labs
Counts up from any moment, live to the second; half-folded, your trackers become two pages
App Store confirmed: Ryan Calpin of Calpin Labs, the developer, in a submission to FoldHunt on October 19, 2026. The release notes for version 1.3.1 (released October 20, 2026) say DaysUp is made for iPhone Duo: half-fold it and your trackers spread across both screens, with Today on the left and the Pro purchase buttons off the fold.
Ryan Calpin / Calpin Labs
Every pet's vaccines, vet visits and meds, with the pet list beside its records open
App Store confirmed: Ryan Calpin of Calpin Labs, the developer, in a submission to FoldHunt on October 19, 2026. The release notes for version 1.1.0 (released October 20, 2026) say Furnest is made for iPhone Duo, with the Documents capture bar kept clear of the fold, and the description says it's made for iPad and iPhone Duo.
Fitness22
A workout planner whose Gym Sign turns the Duo's cover into a sign for the gym
App Store confirmed: Yossi Tarablus, VP Marketing at Fitness22, the developer, in a submission to FoldHunt on October 21, 2026, with a press release dated October 22 saying the Duo update with Gym Sign is out in the latest version on the App Store. The Gymverse iPhone Duo page notes that its screens are simulated. The App Store seller is FITNESS22 LTD; the release notes for version 9.1010 (released October 23, 2026) say "Gymverse is now optimized for iPhone Duo!"
Ryan Calpin / Calpin Labs
Scan a CE certificate and review it beside the details, with your license rings below
App Store confirmed: Ryan Calpin of Calpin Labs, the developer, in a submission to FoldHunt on October 19, 2026, saying the app was tested in the iPhone Duo simulator. The release notes for version 1.2.1 (released October 19, 2026) say Ledger is made for iPhone Duo and iPad: open, scan review goes side by side, and folding mid-scan loses nothing.
Ryan Calpin / Calpin Labs
A crochet row counter: half-open on a table, your pattern stands up above the counters
App Store confirmed: Ryan Calpin of Calpin Labs, the developer, in a submission to FoldHunt on October 19, 2026, saying the app was tested in the iPhone Duo simulator. The release notes for version 2.3.0 (released October 18, 2026) say that on iPhone Duo, half-open, your pattern stands up on top while the counters lie flat below, and the description lists an iPhone Duo tabletop mode.
Jeffrey Grossman
A precision tuner: half-folded, the tuner sits above the fold and the keyboard below
App Store confirmed: Jeffrey Grossman, the developer, in a submission to FoldHunt on October 18, 2026. The release notes for version 1.3 (released October 22, 2026) say "iPhone Duo Support." The description does not mention the Duo.
Ryan Ellis
A pocket synth with eight chord keys on the cover and a loop station beside them open
App Store confirmed: Ryan Ellis, the developer, who makes Octal under the Goodhart name, in a submission to FoldHunt on October 22, 2026, and in the press kit. The App Store seller is RYAN JAMES,GALANG ELLIS. The release notes for version 1.2.0 (released October 22, 2026) say that on iPhone Duo the shut phone turns upright too, and that opened sideways Octal splits down the fold, with the bead and buttons on one half and the Loop Deck on the other. Version 1.0 came out on October 15, 2026.
Paolo Villanueva
Greeting cards whose reveal follows how far you open the Duo
App Store confirmed: Paolo Villanueva, the developer, in two submissions to FoldHunt on October 18 and 19, 2026, with posts on X and a reveal video on YouTube, and in the App Store description, which has a "Made for iPhone Duo" section. Papelle came out on October 21, 2026, and the release notes for version 1.0.1 read "Bug Fixes for iPhone Duo".
TechNICKal LLC
Paper pets that move to the cover when you close the Duo
App Store confirmed: TechNICKal LLC, the developer, in a submission to FoldHunt on October 18, 2026 and an email that followed it, on the game's site (technickalapps.com) and in the App Store description. Version 1.1 (released October 15, 2026) says folding by closing the iPhone Duo now finishes smoothly.
John Seubert
A CD player whose jewel case opens as the Duo unfolds, with a five-disc changer inside
App Store confirmed: John Seubert, who makes Penta, in a submission to FoldHunt on October 20, 2026, and earlier in a post on X with a video from Bitrig's Duo simulator (@seubjoh on X): "Penta is already on the App Store. Duo support coming soon!" The App Store seller is John Seubert (id 6806427066). The release notes for version 1.3 (released October 16, 2026) say Penta comes to iPhone Duo, with the phone as the jewel case and the CD wallet above the tray when folded. A second post on X, on October 16, shows the Duo version in a demo made with Bitrig and Matte (@seubjoh on X).
Cyprian Brytan & Tomasz Szykulski
Make a grilled cheese, then close the phone to shut the toaster lid
App Store confirmed: Cyprian Brytan and Tomasz Szykulski, the developers, in a submission to FoldHunt on October 20, 2026. The App Store description has a "Made for iPhone Duo" section: fold it shut to close the lid, and open it to see how the sandwich is doing. The press page (toastie.fun) says the iPhone Duo mode arrives on October 23, 2026, the day the phone ships, and that its Duo concept film is rendered from simulator footage. Tom Szykulski showed the Duo version in a post on X. The game came out on October 9, 2026; the latest version is 1.1.1 (released October 12, 2026).
Hugo Pinon
3D periodic table that widens when open, with the element card beside the table
App Store confirmed: Hugo Pinon, the developer, in the App Store notes for version 2026.10.23 (released October 9, 2026): "Now fully optimized for iPhone Duo with an interactive 3D periodic table on the expanded inner screen, a quick-reference element inspector on the cover display, and full support for iOS 27.1 side-by-side multitasking." Also in a submission to FoldHunt on October 10, 2026, and in two YouTube videos showing it closed and open (youtube.com and youtube.com). The App Store seller is Hugo Pinon (id 1471848710).
Ian Kehayes
A puzzle played by folding: mirror the shape, then shut the Duo to see how well it matches
App Store confirmed: Ian Kehayes, the developer, in a submission to FoldHunt on October 27, 2026. The App Store seller is Ian Robbie Kehayes. Fold Match came out on October 27, 2026, and its App Store description says it needs an iPhone Duo; the support page says other iPhones get a slider in place of the fold.
Dewei Kong
A party game for one Duo: take turns folding it to a target angle, the reading hidden
App Store confirmed: Dewei Kong, the developer, in a submission to FoldHunt on October 28, 2026, with a video on YouTube and a post on Reddit. The App Store seller is 德威 孔. Guess Angle came out on October 23, 2026, and its App Store description says that "On iPhone Duo with available hinge readings, unfold the phone and physically fold it to the angle you think is right." The video shows the game on a rendered phone.
Kunio Ozawa
A Bluesky client whose feeds open into side-by-side columns when you unfold the phone
App Store confirmed: Kunio Ozawa, the developer, in a submission to FoldHunt on October 24, 2026, and in posts on Bluesky saying the adaptation was made in the simulator. The App Store seller is Kunio Ozawa. The release notes for version 0.47.0 (released October 21, 2026) say it adds iPhone Duo support, switching to a multi-column view when unfolded.
Li Junyi
Photos as pop-up cards: the people in them stand up out of the fold as you open the Duo
App Store confirmed: Li Junyi (LJ), the developer, in a submission to FoldHunt on October 26, 2026, and in a post on X on October 23, 2026, announcing the release. The App Store seller is Junyi Li. Popfold came out on October 23, 2026, and its App Store description says the hinge is the control on iPhone Duo.
Fabrizio Brancati
3D modeling from simple shapes, with the whole editor on the cover and more room open
App Store confirmed: Fabrizio Brancati, the developer, in a submission to FoldHunt on October 23, 2026. The App Store seller is Fabrizio Brancati. The release notes for version 1.3.0 (released October 12, 2026) say it is built for iPhone Duo and describe the closed and open layouts. The press page has iPhone, iPad and Mac pictures, none from the Duo.
Jason Wong
AI critiques of your photos and artwork, with the picture beside its critique when open
App Store confirmed: Jason Wong, the developer, in a submission to FoldHunt on October 24, 2026, saying version 2.4.5 was tested in the iPhone Duo simulator. The App Store seller is Jason Wong. The release notes for version 2.4.5 (released October 24, 2026) say The Crit is ready for iPhone Duo. The website has no Duo pictures.
Rob Rightmyer / CodeFarmer
A readable bullet-hell roguelite whose arena and controls adapt when you open the Duo
App Store confirmed: Rob Rightmyer of CodeFarmer, the developer, in a submission to FoldHunt on October 24, 2026, and on the Threadbreaker iPhone Duo press page. The App Store seller is Rob Rightmyer. The release notes for version 1.1.1 (released October 25, 2026) and the description name iPhone Duo. The press packet's Duo screenshots hide the status bar and its previews are shaped like an ordinary iPhone, so we can't tell they come from the Duo simulator.
Radoslav Lacko
Wallpapers in matched pairs: one still for the cover, the rest revealed when you unfold
App Store confirmed: Radoslav Lacko, the developer, in a submission to FoldHunt on October 23, 2026, saying the cover shows one half of the pair and unfolding reveals the rest. The App Store seller is Radoslav Lacko. Version 1.0 came out on October 23, 2026, with no release notes; the App Store description is written for the iPhone Duo's two displays, with stills sized for the cover (1398 × 2034) and the open display (2853 × 2007).
Just2us
Measures angles with the Duo's hinge: fold it to fit a sketch or a corner, then save it
App Store confirmed: Just2us, the developer, in a submission to FoldHunt on October 22, 2026, saying the app, which it calls Protractor° Duo, was tested in the iPhone Duo simulator but not on a device, and that readings are meant as everyday estimates, since Apple documents the hinge angle's accuracy as ±5°. The App Store seller is Just2us Pte Ltd. The App Store description says the app requires iPhone Duo with iOS 27.1 or later and measures with the phone's folding hinge. The release notes for version 1.1 (released October 22, 2026) change the free trial, keep readings from 80° to 100° free after it, and don't mention the Duo by name.
Abhilash Kuduvalli
A reading tracker whose book details and stacks spread across two columns when open
App Store confirmed: Abhilash Kuduvalli, the developer, in a submission to FoldHunt on October 22, 2026, and in a Bluesky post (@c0up.bsky.social) the same day saying Unshelved is iPhone Duo-ready, with a picture of the app on the cover and the open display. The App Store seller is Abhilash Kuduvalli. The release notes for version 1.2.12 (released October 23, 2026) mention improved portrait layouts on iPhone Duo, with a single stack in Library and a single-column Update Book screen, and onboarding improvements when it's unfolded.
Krzysztof Hendzel
CalendarF1's race calendar and live timing, with races and standings side by side open
App Store confirmed: Krzysztof Hendzel, the developer, in a submission to FoldHunt on October 19, 2026. The release notes for version 1.6.0 (released October 16, 2026) say the app is ready for iPhone Duo and fills both displays, and the CalendarF1 site and a post on X show the open layouts on a rendered, half-open Duo.
Fountain Interactive
Ten tiny retro computers: fold the Duo like a laptop for a screen above, keyboard below
App Store confirmed: Dan Fountain of Fountain Interactive, the developer, in a submission to FoldHunt on October 21, 2026, with a film of the app on a rendered Duo on YouTube. The App Store description says Tiny Computers is made for iPhone Duo: in tabletop mode each computer has its screen above and a working keyboard below, and you browse the collection with the phone closed. The app came out on the App Store on October 23, 2026 (version 1.0.1).
Komorebi Labs
Walk tracker: drag the recording sheet, with your numbers beside the map
App Store confirmed: Komorebi Labs, the developer, in a submission to FoldHunt on October 18, 2026, which describes the Walk Recorder in two panes and a draggable recording sheet on the inner display. The App Store seller is Komorebi Labs LLC. The App Store release notes for version 1.0.7 (released October 20, 2026) say "Walk now supports iPhone Duo"; version 1.0.6 (September 3) and the description don't mention it.
Brian Corrieri
A naval strategy game for the half-folded Duo, out October 23
App Store confirmed: Brian Corrieri of Vision First Studio, the developer, in a submission to FoldHunt on October 20, 2026, and in a teaser on X and YouTube that shows the game on a rendered Duo. The App Store description says that half-folded, your fleet lies on the lower half and the enemy's waters stand up above it, and that the camera and layout adapt as you fold. Version 1.0.1 came out on the App Store on October 23, 2026, and its release notes say "Introducing Battlefleet Duo: the classic naval board game, built for iPhone Duo."
Lake d.o.o.
A coloring app rebuilt for the Duo, with a bigger canvas when you open it
App Store confirmed: Lake, the developer, in a submission to FoldHunt on October 12, 2026, saying the iPhone Duo update ships on launch day, and in its press kit, which shows the app closed and open on the Duo (lake-coloring.notion.site). The App Store seller is Lake d.o.o. (id 1183717726). Version 5.0.0 (released October 21, 2026) says in its release notes "New iPhone Duo in your hands? Lake is now fully adapted for it." The description doesn't mention the Duo.
HSIU FAN WANG
A driver's car ledger that opens like a notebook, a summary beside the details
App Store confirmed: HSIU FAN WANG, the developer, in the App Store release notes for version 1.0.2 (released October 11, 2026): open, each chapter has two facing pages, and while you drive the gauges sit on the left and the live rankings on the right. In an email to FoldHunt on October 17, 2026, the developer described the layouts in more detail and said they were captured in the iPhone Duo simulator with the same 1.0.2 build that's on the App Store.
Adam Foot
Every HomeKit battery in one place, with your devices beside their details when open
App Store confirmed: Adam Foot, the developer, in the App Store release notes for version 4.1, which say the open Duo shows several columns and adjusted toolbars. In an email to FoldHunt, Adam described the open layout: devices in a sidebar on the left, battery details on the right.
Adam Foot
Apple Ads campaigns on the go, with full-width tables and a sidebar when open
App Store confirmed: Adam Foot, the developer, in the release notes for version 2.5.1 (released October 10, 2026): "Added full support for iPhone Duo making it easier to manage campaigns, ad groups, keywords & more on the go," with toolbars and other on-screen elements adjusted throughout the app. Adam described the open layout in an email to FoldHunt.
Adam Foot
One remote for many TVs and streaming boxes: tabs when closed, a command center when open
App Store confirmed: Adam Foot, the developer, in the release notes for version 4.3.1 (released October 10, 2026): full iPhone Duo support with several remote pages when unfolded and a tab layout when folded. Adam described both layouts in an email to FoldHunt.
Brian Corrieri
Folded like a laptop, piano tiles fly out of your room through the top screen
App Store confirmed: Brian Corrieri of Vision First Studio, the developer, in a submission to FoldHunt on October 20, 2026, and in a post on X with a video of the game on a rendered Duo (@Brian_Corrieri on X), where it was still called PianoDuo. The App Store description says that folded like a laptop, the upright screen becomes a window onto your room. Version 1.0 came out on October 23, 2026.
Adam Foot
A diary of your apps' milestones, with the iPad layout when the Duo is open
App Store confirmed: Adam Foot, the developer, in the App Store release notes for version 2.4: open, the Duo shows several columns, and the toolbars are adjusted. In an email to FoldHunt, Adam said the open Duo uses the iPad layout.
Adam Foot
Driving instructors' admin and a route drawing pad, with a bigger map open
App Store confirmed: Adam Foot, the developer, in the release notes for version 8.1.1 (released October 10, 2026): "Added full support for iPhone Duo providing you with easier pupil progress adjustments, finance management and lesson bookings. The Drawing Pad also supports Apple Pencil on a larger map for sketching routes and demonstrating manoeuvres." The map drawing now stays in place when you switch between folded and unfolded. Adam described the open layout in an email to FoldHunt.
Adam Foot
Live channels from your streaming apps in one launcher, with a full TV guide when open
App Store confirmed: Adam Foot, the developer, in the release notes for version 3.3.1 (released October 10, 2026): full iPhone Duo support with a full-screen TV guide and more channels when unfolded, as Adam also described in an email to FoldHunt.
Abdulqadir Rashik
Photo collages with text laid over them, from up to five pictures
App Store confirmed: Abdulqadir Rashik, the developer, in a submission to FoldHunt on October 24, 2026, ticking the closed and open poses without describing the layouts. The App Store seller is Abdulqadir Rashik. The release notes for version 1.1.0 (released October 22, 2026) say: "UI optimized for iPhone Duo." Specific fold adaptations are not yet documented.
Xavi Moll
A private reading journal that scans quotes from the page, now with iPad and Duo layouts
App Store confirmed: Xavi Moll, the developer, in a submission to FoldHunt on October 19, 2026, who ticked the closed, open, half-folded, stand and Split View poses and wrote: "Everything adapts as it also supports iPad." The release notes for version 2026.6 (released October 19, 2026) say it adds iPad and iPhone Duo support and turns on rotation on iPhone. Specific fold adaptations are not yet documented.
jRustonApps
The nearest public toilets, from a list of over 200,000, with directions, on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.4.1 (released October 19, 2026) say: "The design of the app has been improved. iPhone Duo support." Flush Toilet Finder Pro (version 26.4.1, released October 18, 2026) has the same notes. Specific fold adaptations are not yet documented.
jRustonApps
Live London Underground departures, the official map and a journey planner, on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.4.2 (released October 20, 2026) say: "The design of the app has been improved. iPhone Duo support." Specific fold adaptations are not yet documented.
jRustonApps
Northern Lights forecasts, the KP index and aurora alerts, now on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.8.1 (released October 19, 2026) say: "The design of the app has been improved. iPhone Duo support." My Aurora Forecast Pro (version 26.8.2, released October 21, 2026) has the same notes. Specific fold adaptations are not yet documented.
jRustonApps
A simple converter for over 150 currencies that also works offline, now on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.6.1 (released October 19, 2026) say: "The design of the app has been improved. iPhone Duo support." My Currency Converter Pro (version 26.6.1, released October 18, 2026) has the same notes. Specific fold adaptations are not yet documented.
jRustonApps
A live map, a feed and free alerts for earthquakes around the world, now on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.6.2 (released October 19, 2026) say: "The design of the app has been improved. iPhone Duo support." My Earthquake Alerts Pro (version 26.6.2, released October 19, 2026) has the same notes. Specific fold adaptations are not yet documented.
jRustonApps
Hurricane tracking maps, NOAA forecasts and weather warnings, now on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.5.2 (released October 19, 2026) say: "The design of the app has been improved. iPhone Duo support." My Hurricane Tracker Pro (version 26.5.3, released October 20, 2026) has the same notes. Specific fold adaptations are not yet documented.
jRustonApps
Lightning strikes around the world in close to real time, with storm alerts, on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.4.2 (released October 19, 2026) say: "The design of the app has been improved. iPhone Duo support." My Lightning Tracker Pro (version 26.4.3, released October 20, 2026) has the same notes. Specific fold adaptations are not yet documented.
jRustonApps
Moon phases, moonrise and moonset, and golden hours for photos, now on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.6.1 (released October 19, 2026) say: "The design of the app has been improved. iPhone Duo support." My Moon Phase Pro - Alerts (version 26.6.1, released October 18, 2026) has the same notes. Specific fold adaptations are not yet documented.
jRustonApps
Pollen forecasts, a pollen map and a diary of your symptoms, now on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.5.2 (released October 21, 2026) say: "The design of the app has been improved. iPhone Duo support." My Pollen Forecast Pro (version 26.5.2, released October 20, 2026) has the same notes. Specific fold adaptations are not yet documented.
jRustonApps
Tide tables for over 9,000 stations in more than 40 countries, now on the Duo
App Store confirmed: Jake Ruston of jRustonApps, the developer, in a submission to FoldHunt on October 20, 2026 that covered all the studio's apps, ticking the closed, open, half-folded, stand and Split View poses and saying: "Full support for all orientations and poses in the inner and outer screen." The App Store seller is JRustonApps B.V. The release notes for version 26.4.1 (released October 19, 2026) say: "The design of the app has been improved. iPhone Duo support." My Tide Times Pro - Tide Chart (version 26.4.1, released October 18, 2026) has the same notes. Specific fold adaptations are not yet documented.
Shayes Apps LLC
A home management app for maintenance, warranties, inventory and projects
App Store confirmed: Stephen at Shayes Apps LLC, the developer, in a submission to FoldHunt on October 18, 2026, who ticked the closed, open, half-folded and Split View poses without describing the layouts, and in the App Store release notes for version 6.1.0 (released October 14, 2026), which say "iPhone Duo support" and nothing more. Specific fold adaptations are not yet documented.
Xavi Moll
A read-later app that's 100% private: no servers, no ads, no tracking
App Store confirmed: Xavi Moll, the developer, in a submission to FoldHunt on October 19, 2026, who ticked the closed, open, half-folded, stand and Split View poses and wrote only "Everything adapts." Version 2026.14 (released October 22, 2026) lists "iPhone Duo screenshots" in its release notes; the description doesn't mention the Duo. Specific fold adaptations are not yet documented.
Shayes Apps LLC
Track all the repeating tasks in your life, with a history of when each was last done
App Store confirmed: Stephen at Shayes Apps LLC, the developer, in a submission to FoldHunt on October 18, 2026, which lists the closed, open, half-folded and Split View poses without describing the layouts, and in the App Store release notes for version 10.1.0 (released October 12, 2026), which say "iPhone Duo support" and nothing more. Specific fold adaptations are not yet documented.
Heypster
GIF shelves across both halves, a GIF above its tags when folded, a showcase as a tent
App Store confirmed: Florent Morin, who makes heypster as a side project, in a reply on X to a call for day-one iPhone Duo apps, with a video of heypster on the Duo (@florentmorin on X). The App Store release notes for version 6.2 (released October 12, 2026) say heypster is "now optimized for iPhone Duo" and that the update "fully adapts" the experience to its new format, without describing the layouts.
Jazzen Chen
AI agent quotas and sessions, two columns open, a desk display when it stands
App Store confirmed: Jazzen Chen, the developer, in a post on X saying Agent HUD is adapted for iPhone Duo, with a design-book video of each layout (@Jazzen_Chen on X). The App Store description for version 1.7.1 (released October 19, 2026) says to use either display on iPhone Duo and continue the same session when you fold the phone.
Zaffles LLC
Scores above the fold and scorekeeping controls below
App Store confirmed: Zaffles LLC, the developer, in the App Store release notes for version 1.2.0 (released October 6, 2026), which describe a half-folded layout with the scores above and the scoring buttons below, a side for each team when folded like a book, and larger scores when open. The App Store pictures show conventional phone and tablet scoreboards.
Badarinath Venkatnarayansetty
A pickleball mistake log with sessions beside details, and a coach chat half-folded
App Store confirmed: The developer, Badarinath Venkatnarayansetty, in a video on X on October 11, 2026 saying Pickle Rite is ready for iPhone Duo (@badrivm on X), which shows it closed, open, half-folded and standing in a 3D Duo preview. The App Store seller is Badarinath Venkatnarayansetty (id 6754095362). The release notes for version 1.17 (released October 12, 2026) say Pickle Rite is ready for iPhone Duo, with every part of the app spreading out, cards lining up on either side of the fold, and panes splitting or stacking for book, tabletop and tent modes.
Bytesize Systems Pty Ltd
Exercise demo beside the countdown on the open Duo, both up top in laptop pose
App Store confirmed: Stuart Hall, who makes 7 Minute Workout, in a reply on X with a "Built for iPhone Duo" video (@stuartkhall on X). The App Store release notes for version 20.0.0 (released October 19, 2026) say the workout controls now sit where the device expects them, including the side of iPhone Duo.
Neeraj Sharma
Books open across the fold, with the page above the controls when half-folded
App Store confirmed: Neeraj Sharma, the developer, in the App Store description, which describes the open and half-folded layouts; the release notes for version 1.0.1 (released October 15, 2026) mention page numbers corrected in every Duo position. The developer's site describes a single page when closed.
Bravely Studios LLC
A remote desktop with a trackpad or keyboard below the picture when half-folded
App Store confirmed: Bravely Studios, the developer, on its Scry Duo page (updated October 17, 2026), which names version 1.9.0. The App Store listed version 1.8.4 on October 18, so the Duo version may not be out yet. The page's screenshots are labeled as simulator captures.
Berk Demir
Workouts with an exercise video above the controls when the Duo is half-folded
App Store confirmed: Berk Demir, the developer, in the App Store description and the release notes for version 2.1.1 (released October 14, 2026), which describe the Duo layouts.
Julian Zefferer
Measure between two surfaces and keep the result when closed
App Store confirmed: Julian Zefferer, the developer, in the App Store description for version 1.1 (released October 15, 2026), which says the hinge measures the angle between two surfaces and that a held value stays available when the phone is closed.
HMZ craftsmanship GmbH
Pick a cassette when open, then fold the Duo to play it on the cover
App Store confirmed: HMZ craftsmanship, the developer, in the App Store description (the current version is 1.1.1, released October 18, 2026), which says Bionic Tape is built for iPhone Duo and that folding starts playback.
Anthrolect S / Wertkern Beratung GmbH
27 card, board and casino games, with the table above your hand when half-folded
App Store confirmed: Anthrolect S, the developer, in the App Store description for version 1.0 (released October 14, 2026), which lays out the game for the cover, the open phone and the half-fold. The promotional pictures show the half-folded layout as artwork, not the game running.
Yaron Walter
Compare song versions, with the playing track beside its alternatives on the open Duo
App Store confirmed: Yaron Walter, the developer, in the App Store description and the release notes for version 3.0.1 (released October 16, 2026), when the app was called Original vs Remix. The description still mentions the Duo after the app became Lahit in version 3.1.0 (October 18).
Aaron BInner
A Magic life counter that puts opponents above and your controls below when half-folded
App Store confirmed: Aaron BInner, the developer, in the App Store description for version 1.0 (released October 16, 2026), which says the app is designed for iPhone Duo, with a layout for linked tables when half-folded and a shared table when open flat.
Tineo LLC
Travel plans beside the current trip, in a Duo update Tineo says is coming
App Store confirmed: Tineo, the developer, in an article on its blog (October 16, 2026), which previews closed, open and partly folded layouts and says they arrive in the next update. The screenshots are described as simulator captures, and the teaser also uses rendered devices. The next App Store update, version 1.7.7 (released October 19, 2026), doesn't mention the Duo; version 1.7.13 (released October 22, 2026) mentions only "groundwork for iPhone Duo".
SixTwelve Studio
A video postcard camera, with the viewfinder beside its ten-clip deck on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 1.0.3D (released October 10, 2026): closed, the camera and cards sit beside a side rail of controls; open, the viewfinder sits beside the clip deck; standing half-folded, a three-second timer allows hands-free recording. The developer's product page also names the iPhone Duo.
SixTwelve Studio
A panoramic camera with a hands-free tabletop shutter and a preview for the subject
App Store confirmed: The developer, on its product page and in the App Store release notes for version 1.0.7 (released October 10, 2026): open, a full-width panoramic finder; partly folded, a hands-free shutter; closed, a mirrored preview for the subject. The current version is 1.0.9.
SixTwelve Studio
Panoramic video, with the frame above a separate control deck when half-folded
App Store confirmed: The developer, on its product page and in the App Store release notes for version 1.0.4 (released October 11, 2026): half-folded, the recording controls sit below the fold; closed, the cover can be a monitor for the subject; and a take keeps recording as the phone folds.
Appalex Kft.
A two-player sea battle with your fleet above the fold and enemy waters below
App Store confirmed: The developer, on its iPhone Duo page, which describes layouts for the cover, open flat and half-folded. The half-folded picture is promotional artwork, and the closed and open ones are framed screens that don't say how they were made. The game came out on the App Store on October 23, 2026 (version 1.0); its description says "iPhone Duo: stand it half open and the battle splits like a folding game case, your fleet upright and the enemy's waters flat under your fingers."
Gianni Carlo
An audiobook player, with Settings and the selected page on either side of the fold
App Store confirmed: Gianni Carlo, BookPlayer's creator and maintainer, in pull request 1647 on GitHub (posted October 14, 2026, merged October 15): open or half-folded, Settings and the selected page sit side by side, and the maker tried the change in the iPhone Duo simulator. The App Store still has version 5.22.2, from October 7.
Travel Maps
A travel guide with the map beside the place you read, and a photo frame closed
App Store confirmed: The developer, in the App Store release notes for version 7.0.2: open, the map sits beside the place you're reading; half-folded, the camera view shares the screen with a map; and closed and set down sideways, the cover becomes a photo frame.
Beonbrand Inc
A teleprompter with the script by the camera, and on the cover for whoever is filmed
App Store confirmed: The developer, in the App Store release notes for version 1.5.0: the script sits by the camera on either display, and with the phone open and the rear camera recording, the cover can show the script to the person being filmed.
hideo endo
HSK Chinese practice with the character above the fold and the writing box below
App Store confirmed: The developer, in the App Store description, which has a section on iPhone Duo, and in the release notes for version 1.9.19 (released October 11, 2026): held half-open like a book, quiz answers and two-column screens such as Record now stay clear of the fold. The App Store seller is hideo endo (id 6761324480). The store's screenshots show the iPhone and iPad, not the Duo.
LittleFin LLC
A bill organizer that opens the bill beside its calendar when open
App Store confirmed: The developer, LittleFin, in a post on X on October 11, 2026 with three Duo screenshots (@LittleFinLLC on X), and in the release notes for version 14.11.1 (released October 10, 2026): "New: Support for iPhone Duo". The App Store seller is LittleFin LLC (id 572561420).
Natheo Brault
Origami puzzles where the Duo's hinge is the fold line: fold the phone to fold the paper
App Store confirmed: The developer, in the App Store description, under "DESIGNED FOR iPHONE DUO": "On iPhone Duo, the hinge becomes your fold line. Align the crease under the hinge, then physically fold your phone to fold the paper. Close it completely to reveal your finished origami." One App Store screenshot, "Even better on iPhone Duo," shows a level on the open Duo with the fold line down the hinge and a drawing of the phone folding shut. The release notes for version 0.1.0 (released October 10, 2026) don't mention the Duo. The App Store seller is Natheo Brault (id 6819676482).
Brandon Tran
News read aloud, a two-page reading room when open, a radio when stood up
App Store confirmed: The App Store description, by the developer Brandon Tran, has a "Built for iPhone Duo" section, and a promo image of the Duo is among the App Store screenshots.
Think Tap Work, LLC
Unit and currency converter with a big keypad on the lower half in laptop pose
App Store confirmed: Think Tap Work, which makes Morpho, in a post on X with pictures of the inner screen, the laptop pose and the cover (@thinktapwork on X), on its blog, and in the App Store release notes for version 3.4 (released October 9, 2026): "iPhone Duo Support... Use a large keypad while in Laptop pose... multiple column support."
Dimitris Kontaris
A UK net worth tracker, totals on the cover, a sidebar for goals when open
App Store confirmed: The App Store description, by the developer Dimitris Kontaris, has a "Folded or open" section on iPhone Duo, and the release notes for version 1.0.2 (released October 9, 2026) list changes for the Duo part folded, held upright or set down like a laptop. A promo image of the Duo is among the App Store screenshots.
Dimitris Kontaris
Sourced quotes, collections in a sidebar when open, the quote above the fold on a table
App Store confirmed: The App Store description, by the developer Dimitris Kontaris, has a "Ready for iPhone Duo" section, and the release notes for version 1.4.4 (released October 9, 2026) list fixes for the Duo held upright, set down like a laptop or stood on its side.
Dimitris Kontaris
A transit-map logic puzzle whose board and service brief face each other on the open Duo
App Store confirmed: The App Store description, by the developer Dimitris Kontaris, has a section on iPhone Duo, and the release notes for version 1.3.1 (released October 9, 2026) say the update is mainly for the Duo stood part open like a laptop or held open and upright. A promo image of the Duo, "Ready for iPhone Duo", is among the App Store screenshots.
Basic Function
Weather app that compares tomorrow with today, with adaptive layouts for iPhone Duo
App Store confirmed: The Thermo Diem account on X: "Getting ready to submit 3.6 (iPhone Duo Support)". The picture with that post is a labelled design render. On October 11, 2026 the account posted four pictures of the app on the Duo (@ThermoDiem on X). The App Store seller is Mickey DeLorenzo (id 912968904). The release notes for version 3.7 (released October 18, 2026) say it adds native support for iPhone Duo, with adaptive layouts for expanded, folded and tabletop use.
Dimitris Kontaris
A UX reference that opens like a book, the library on the left, the entry on the right
App Store confirmed: The App Store description, by the developer Dimitris Kontaris, has a section on opening the iPhone Duo like a book, and the release notes for version 1.1.1 (released October 9, 2026) describe changes for the Duo held open and upright or set down like a laptop. A promo image of the Duo is among the App Store screenshots.
Diversion Marketing Inc
Half-folded, what's next sits up and the day's list lies flat
App Store confirmed: slaven posted a video of Finalist on a rendered iPhone Duo and said it is ready (@slaven on X). The X profile links Finalist, and the App Store seller is Diversion Marketing Inc (id 6447014685). Version 4.1 (released 2026-09-10) did not mention the Duo. The release notes for version 4.2.3 (released October 19, 2026) say there are "more layouts for more poses" and that the Planner remembers a layout per pose: closed or open, upright or sideways.
Furkan Simsir
An inbox for quick notes: on the cover, beside the note you picked open, and standing
App Store confirmed: Capture's own account (@getcaptureapp) says it will be ready for iPhone Duo on day one, with four pictures of it closed, open and standing (@getcaptureapp on X). The App Store release notes for version 3.3.1 (released October 14, 2026) say Capture now supports iPhone Duo: open, captures sit next to the one you're reading; closed, everything fits the outer display.
Out to Lunch Productions, LLC
Channel-surf your own Plex server, with the picture above or beside the guide on the Duo
App Store confirmed: Coax posted its first pass at iPhone Duo layouts on Bluesky, saying more work will follow once the maker has the device (bsky.app). The App Store release notes for version 1.5 (released October 13, 2026) say only "iPhone Duo ready"; they don't describe the layouts.
Essayist Software Inc.
An academic writer with the outline or references beside the draft
App Store confirmed: Till Konitzer announced Essayist for iPhone Duo at launch, with a preview video (@knutknatter on X, youtube.com). The App Store release notes for version 2.2.0 (released October 14, 2026): "Made for iPhone Duo: Write on the closed display or unfold for the full page. Half open, your essay sits on one half and the inspector on the other."
Federico Garcia-Lorca Hernandez
Podcast cover art up, playback below when half-folded
App Store confirmed: Federico (@MicropodAudio) posted Micropod on cover, half-folded and open Duo poses (@MicropodAudio on X).
KMNGY Inc.
Vlog preview and moments that split at the Duo fold
App Store confirmed: oblivious (@oblivious_film) posted its Duo layouts for each pose, due in version 2.2.0 (@oblivious_film on X).
Essayist Software Inc.
A research paper reader with the outline beside the PDF
App Store confirmed: Till Konitzer announced Researchist for iPhone Duo at launch, with a preview video (@knutknatter on X, youtube.com). The App Store release notes for version 1.1.0 (released October 14, 2026) say only "Optimized for iPhone Duo."
Hideo Suzuki
Old PC-98 MIDI songs, controls on the cover, split half-folded, all 32 parts open flat
App Store confirmed: The developer, @FoamyDreamIR on X, says the Duo update passed App Review and posted a video of the Duo layouts (@FoamyDreamIR on X). The App Store release notes for version 1.4.0 (October 7, 2026) say it now supports the iPhone Duo.
Victoria Ali
Keepsake boxes on the cover, bigger when open, a shelf with a lamp when stood up
App Store confirmed: Victoria Ali, the developer, in a reply on X to Linda Dong's post about Duo App Store submissions with a video of Memories closed, open and standing half-folded on the iPhone Duo (@Victoriaaaaali on X). The App Store release notes for version 1.6 (released October 12, 2026) say it includes improvements and "full support for iPhone Duo."
Radomir Drndarski
Timed notes for your partner, with a layout closed, half-folded and open
App Store confirmed: Radomir Drndarski, the developer, in a reply on X to Federico Viticci's call for iPhone Duo apps, with a video of Pipnote closed, half-folded and open on the iPhone Duo, saying it is ready (@radomir_3 on X). The App Store release notes for version 1.4.0 (released October 14, 2026) say Pipnote is ready for iPhone Duo: open, the composer spreads out with couriers and timing on one side and your note on the other; half-open, the note and courier sit above the fold, with the timing below.
Larry Chen
Park badges on the cover, a wider shelf half-folded, a map of your visits open flat
App Store confirmed: Larry Chen, the developer (the App Store seller is Larry Le Chen), in a reply on X to Andru Edwards with screenshots of Scratchbook closed, half-folded and open on the iPhone Duo, saying the Duo optimization was just submitted for review (@larrychen on X). The App Store release notes for version 1.20 (released October 23, 2026) now mention it: "Beautiful new parks and wildlife layouts for iPhone Duo and iPad".
Innologica
The phone layout on the cover, feeds beside articles when open
App Store confirmed: Inoreader, in a blog post on October 5, 2026, with screenshots from the Duo (inoreader.com), and in the App Store release notes for version 7.11.1 (released October 14, 2026): version 7.11 adds iPhone Duo support, with the familiar phone layout folded, feeds and folders beside articles unfolded, and the compact layout in Split View.
Jeremie Berduck
Art practice timer that puts the reference photo above the fold and the timer below.
App Store confirmed: Jeremie Berduck, in a Mastodon post (iosdev.space).
Oliver Ames
School pickup plans with a wider calendar when the Duo opens
App Store confirmed: Oliver Ames, the developer, in the App Store description and release notes for version 1.0.1 (released October 15, 2026), which describe different calendar layouts for the Duo's front and unfolded displays. The page is the German App Store's.
Bravely Studios LLC
A PDF editor that adds page thumbnails and more tools when open
App Store confirmed: Bravely Studios, the developer, on its ASAPDF page for iPhone Duo (updated October 17, 2026), which names version 0.15.8 and shows screenshots it labels as simulator captures. The App Store lists version 0.15.7, so the version with Duo support may not be out yet.
Joachim Bondo / Cocoa Stuff
Chess that arranges its board around the Duo's fold, with controls in the side bar
App Store confirmed: Joachim Bondo, the developer, in the App Store release notes and the changelog on deepgreen.app for version 2.1.2 (released October 13, 2026), which describe support for both displays and every fold pose. The App Store lists Cocoa Stuff as the developer and Joachim Bondo as the seller.
Bravely Studios LLC
Markdown beside the finished document when open
App Store confirmed: Bravely Studios, the developer, on its Markd.ly page for iPhone Duo (updated October 17, 2026), which names version 1.11.12 and shows screenshots it labels as simulator captures. The App Store lists version 1.11.11, so the version with Duo support may not be out yet.
Bravely Studios LLC
Synced screenshots and markup across the cover and inner display
App Store confirmed: Bravely Studios, the developer, on its PrintScreen.ly Duo page (updated October 17, 2026), which names version 1.12.6. The App Store listed version 1.12.2 on October 18, so the Duo version may not be out yet. The page's screenshots are labeled as simulator captures.
Bravely Studios LLC
Task lists on the cover and a wider kanban board when open
App Store confirmed: Bravely Studios, the developer, on its Todoing.ly Duo page (updated October 17, 2026), which names version 1.14.8. The App Store listed version 1.14.6 on October 18, so the Duo version may not be out yet. The page's screenshots are labeled as simulator captures.
Jonathan Clarke
Weather forecasts beside sensor tiles on the open Duo
App Store confirmed: Jonathan Clarke, the developer, on the app's product page and in its App Store release notes, which claim layouts for the Duo's closed and open displays. The notes for version 2.8 (released October 19, 2026) say the app is fully updated and optimized for iPhone Duo. The product page's picture shows an open, wide phone with forecasts beside sensor tiles and controls at the right edge.
Yet to be Named Enterprise
Earthquake maps with an expanded details panel on the open Duo, the developer says
App Store confirmed: Yet to be Named Enterprise, the developer, in the App Store release notes for version 3.2 (released October 11, 2026), which describe layouts for both Duo displays, a details panel that starts expanded when open, and map controls that adjust around the fold. The App Store seller is Jacob White.
SMobile Factory
News to read or hear, with stories beside the article on the open Duo
App Store confirmed: SMobile Factory, the developer, in the App Store notes for version 1.1 (October 14, 2026), which describe the cover layout and an open layout with stories beside the article and playback controls in a side column. The current version is 1.2 (October 15, 2026). The App Store seller is Tommy Tian.
Counters and daily check-ins, with two columns on the open Duo
App Store confirmed: 伊 余, the developer, in the App Store release notes for version 1.0.2 (released October 10, 2026), which name layouts for the cover and the open display, navigation that adapts to a sidebar, and two columns on the open display. The notes are in Chinese.
Pascal Wheeler
An accordion you play by squeezing the Duo's hinge, with a keyboard on the cover
App Store confirmed: Pascal Wheeler, the developer, in the App Store description and on the app's site, which say the Duo's hinge works Bellowsby's bellows. Version 1.0 was released October 15, 2026.
Simple Tree LLC
Connection status on the cover, two columns when opened
App Store confirmed: Simple Tree LLC, the developer, in the App Store release notes for version 1.0.4 (released October 12, 2026), which say the app is made for iPhone Duo: fold it shut while your console is joining and the cover shows one big status, with Stop, and opening it brings back two columns. The App Store pictures don't show that change.
Navid Gooranourimi
A voice-following script on the cover beside the main camera
App Store confirmed: Navid Gooranourimi, the developer, in the App Store description for version 1.0 (released October 14, 2026), which says the script sits on the cover beside the main camera, with a director's view on the inner screen.
Special Glasses LLC
Use the hinge for angles and the screen edges as rulers
App Store confirmed: Special Glasses LLC, the developer, in the App Store description for version 1.0 (released October 15, 2026), which says the open Duo reads the hinge angle like a bevel gauge, and that a folded Duo works as a level.
Balazs Pinter
A concertina whose bellows follow the Duo's fold
App Store confirmed: Balazs Pinter, the developer, in the App Store description and the release notes for version 1.1 (released October 7, 2026), which add bellows worked by the hinge on iPhone Duo with iOS 27.1 or later. The developer's own page for the app still describes version 1.0, without the hinge.
Bala Technologies LLC
Fold the ink sheet shut, rub the cover, then reopen it to reveal a print
App Store confirmed: Bala Technologies, the developer, in the App Store description (the current version is 1.1, released October 16, 2026), which says the app is made for iPhone Duo's hinge.
Mohammed Ridha
A light-path puzzle with its board on one side of the open Duo
App Store confirmed: Mohammed Ridha, the developer, in the App Store description (the current version is 1.1, released October 16, 2026), which says the game is made for iPhone Duo.
Haruhiko Kishi
Half-folded, you draw from the raised hand while the card table lies flat below
App Store confirmed: Haruhiko Kishi, the developer, in the App Store description and release notes for version 1.3.5 (released October 16, 2026), which describe a half-folded layout with the hand you draw from above and the table below, and a full-screen game when the phone is open.
Balazs Pinter
A document reader that sets the translation or explanation beside the page when open
App Store confirmed: Balazs Pinter, the developer, in the App Store description and the release notes for version 1.1.1 (released October 9, 2026), which name iPhone Duo. The description sets out a reading view focused on the page on the cover, and paired views when the phone is open in landscape.
Chris Arrow
Slides and controls beside speaker notes on the open Duo
App Store confirmed: Chris Arrow, the developer, in the App Store description for version 1.0 (released October 16, 2026), which says the app is built for iPhone Duo, with the presenter console split across the open display.
Matthew Harrington
Polling trends, with newspaper-style briefings and races laid across the fold
App Store confirmed: Matthew Harrington, the developer, in the App Store release notes for version 1.3.0 (released October 14, 2026), which add iPhone Duo support. The description sets out the Duo layouts for feeds, charts, briefings, race comparisons and the seat chamber.
Alexander Brommer
Message reminders with a list and details side by side when open
App Store confirmed: Alexander Brommer, the developer, in the App Store release notes for version 3.0 (released October 15, 2026), titled Made for iPhone Duo, which say that unfolded, your messages and their details sit side by side, and folded, everything fits the compact display.
Sameer Bhutani
A card magic trick that uses the Duo's cover screen, with a reveal when you open it
App Store confirmed: Sameer Bhutani, the developer, in the App Store description for version 1.2 (released October 4, 2026), which says to place a real card inside the fold, watch the cover screen transform it, and open the phone to find the card has changed. The App Store pictures show ordinary iPhone screens.
Fontecha Creative Studios LLC
A pocket sketchbook that opens into two connected pages on the Duo
App Store confirmed: Fontecha Creative Studios, the developer, in the App Store description for version 1.0 (released October 16, 2026), which says that on iPhone Duo the sketchbook is one page when closed and a two-page spread when open. The developer's site illustrates both layouts.
Haider Nawaz
Charades where friends see the word outside while you watch them from inside
App Store confirmed: Haider Nawaz, the developer, in the App Store description for version 1.0 (released October 15, 2026), which says the app is optimized for iPhone Duo: held open like a book, the word appears on the outer screen and you watch on the inside; closed, it plays classic charades on the outer screen.
Pietro Messineo
Open the phone to raise a pop-up city from its book
App Store confirmed: Pietro Messineo, the developer, in the App Store description for version 1.0 (released October 15, 2026), which says that on iPhone Duo the phone is the book: closed, the outer screen shows the cover, and unfolding the phone opens the book with it. Other iPhones use a hinge at the bottom of the screen. The App Store pictures are promotional artwork.
Wesley Matlock / INSOC
A record collection with a sidebar on the open Duo and a scanner that follows the screen
App Store confirmed: Wesley Matlock, the developer, in the App Store description and the release notes for version 4.1.0 (released October 9, 2026), which describe the Duo layouts, and in an article on rebuilding the app for the Duo. The App Store pictures show tall iPhone layouts.
Jonathan Clarke
Cricket scores and fixtures, with a wider match grid on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 2.18, which say the app is optimized for iPhone Duo. The developer's website has pictures of it on the Duo, closed and open.
InfiniteUp LTD.
Task steps on the cover, a two-page plan when open
App Store confirmed: The developer, on its iPhone Duo page: the App Store version uses the full open display, and the release notes for version 1.0.57 (released October 16, 2026) say it is laid out for iPhone Duo. The page's six pictures are the web app captured at Duo sizes, not screenshots from the simulator or a device. Layouts for the half-folded Duo are still planned.
Eversight Studio LLC
Meeting notes from recordings that keep your place and audio as the Duo opens or closes
App Store confirmed: The developer, on its website and in its FAQ: Phrase works on both Duo displays and keeps your place in the note, and the audio playing, as the phone opens or closes. The App Store release notes for version 1.6.0 (released October 12, 2026) list Duo layout changes. The site's picture of the cover doesn't say how it was made.
Filibaba AB
Recipes, meal plans and shopping lists, with a cooking mode for the half-folded Duo
App Store confirmed: The developer, in the App Store release notes for version 8.6 (released October 15, 2026) and the FAQ on its website: open, the Duo shows more of the recipe library, and folding a recipe enters cooking mode. The half-folded picture on the site doesn't say how it was made.
Jonathan Clarke
Mahjong solitaire with a full board on both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 1.30 (released October 9, 2026), which add iPhone Duo support, and on its website, with screenshots of the board on the cover, open, and open turned upright. The screenshots don't say how they were made.
Blaine Miller
Device stats, benchmarks and network tests, sized for both Duo displays
App Store confirmed: The App Store release notes for version 2.0.8 (released October 16, 2026) say it is optimized for iPhone Duo, and Blip now fits both the folded and the opened display. The developer's release notes in the Blip GitHub repository, dated October 14, 2026, said the same about the build they submitted.
Chirag Mirani
A one-tap arcade game, played in portrait on either Duo display
App Store confirmed: The developer, on the game's support page (updated October 14, 2026) and in the App Store description: the game plays in portrait on either iPhone Duo display. The App Store release notes for the current version, 2.2.1 (October 19, 2026), don't mention the Duo.
motocode ltd
A cycling route planner: plan on the cover, then open for the full map
App Store confirmed: The developer, in the App Store release notes for version 51.0: plan a route on the cover, then open the phone for a bigger map, with the route details, elevation chart and ride controls using the wider screen.
茂华 崔
A vinyl-style music player with lyrics beside the album art on the Duo
App Store confirmed: The developer, in the App Store release notes for version 3.7 (released October 12, 2026), which add iPhone Duo support and inline lyrics in landscape on the Duo's inner display. The PickPark account on X, whose profile links to Shae on the App Store, announced the update the same day with promotional pictures of the player on the Duo (@PickParko on X). The App Store seller is 茂华 崔 (id 6753968019).
Jonas Myren Ribe
A PDF reader that turns into a two-page spread when you unfold the phone
App Store confirmed: The developer, in the release notes for version 2026.3 (released October 10, 2026): "The iPhone Duo release with a whole new page layout mode called Auto where unfolding will automatically switch from single to two-page layout for a book-like experience." PDFs show edge to edge folded and unfolded, with the toolbar buttons floating in a vertical bar that hides when you tap the page, and on the inner display you can compare two documents side by side in separate windows. There are no pictures of it on the Duo yet. The App Store seller is Jonas Myren Ribe (id 1498912833).
Chikara Matsuo
A small-pet health log that puts each record beside its history when open
App Store confirmed: The developer, posting as すなガジェ on X on October 10, 2026 with a video of the app closed and open on iPhone Duo; the post says Duo support is coming (@Suna_gadget on X). The App Store seller is Chikara Matsuo (id 6762068300, Japanese store). Version 3.2.20 (released October 22, 2026) lists "iPhone Duo に対応" (supports iPhone Duo) in its release notes.
Sideswipe Labs
Photo albums that open as a two-page spread with the spine on the fold
App Store confirmed: The developer, in the release notes for version 1.3.8 (released October 10, 2026), repeated in version 1.3.9 (released October 11, 2026), which say it is made for iPhone Duo and describe the open and closed layouts. There are no pictures of it on the Duo yet. The App Store seller is SIDESWIPE LABS PRIVATE LIMITED (id 6761680350).
Alexandre Vazquez
Your Immich photos as a frame; stood half-folded, the photo on top, clock below
App Store confirmed: The developer, in the App Store description of version 1.0 (released October 5, 2026), its first release, which has no release notes: "Compatible with iPhone Duo: on the inner display Reverie uses the whole canvas, and stood half-folded on a desk it switches to tabletop mode, with the photo on top and the clock and controls below." The second App Store screenshot, headed Compatible with iPhone Duo, shows the tabletop mode on the Duo's inner display. The App Store seller is Alexandre Vazquez (id 6811943046).
Michael Fischer
App Store Connect numbers, yesterday's totals on the cover and every app's chart open
App Store confirmed: The developer, posting as michlfi on X on October 10, 2026, with a video of App Portfolio on iPhone Duo closed and open (@michlfi on X). The App Store seller is Michael Fischer (id 6814771654). The release notes for version 1.0.2 (released October 21, 2026) say "Adapted for iPhone Duo, folded and unfolded." The description does not mention the Duo.
Tomer Beilinson
Language flashcards, the card above the fold and the review buttons below it
App Store confirmed: The developer, Tomer Beilinson, in a post on X on October 10, 2026, with a picture of Flexi on iPhone Duo half-folded and closed (@tomerbeil on X). The release notes for version 3.9.0 (released October 9, 2026) list iPhone Duo support, with layouts for both displays and, when you review with the phone seated, the card above the fold and the controls below.
Breakpoint Studio
A ski and snowboard tracker, a one-handed recorder closed and the whole trail map open
App Store confirmed: The developer, posting as Slopes on X on October 10, 2026, with a video of Slopes on iPhone Duo closed and open, marked coming soon (@slopesapp on X). The App Store's release notes for version 2026.16, released on October 9, already say Slopes is optimized for iPhone Duo: a compact interface with a smaller map folded, and larger full-screen maps open. The seller is Breakpoint Studio LLC.
A Bible that opens into a two-page spread, with the reader above the player half-folded
App Store confirmed: The App Store release notes for version 1.1 (released October 7, 2026), from the seller 路远 陈: "Built for iPhone Duo: the Bible now unfolds into a two-page spread, with layouts that adapt to Book, Flat, and Tabletop postures". The App Store screenshots show the Duo layouts.
Lotus Apps
A 1991 camcorder, opening the phone switches it on and the cover faces your subject
App Store confirmed: The App Store description, by Lotus Apps, has a "Made for iPhone Duo" section, and the Flipcorder site (flipcorder.app) shows the inner viewfinder and the cover facing the person being filmed. Version 1.0.1 came out on October 23, 2026.
Ting Tze Chuen
Slideshow maker that plays above the fold with its controls below
App Store confirmed: The App Store release notes for version 3.1.1: "Made for iPhone Duo! Unfold it and Make Video, the home screen and the photo editor spread out side by side on the big inner screen. Half-fold iPhone Duo like a mini laptop: your slideshow plays above the fold, with the controls below."
Los del Más Acá
IPTV player whose detail pages give the trailer more room on the open Duo
App Store confirmed: The App Store release notes for version 1.1.2, in Spanish: Grain adds iPhone Duo compatibility, with the home screen, catalogue and detail pages fitting the width and orientation, and more room for the trailer when unfolded. The Grain account says the same in a post on X: "Folded, everything stays within reach. Unfolded, you get a sidebar, a wider catalog and bigger detail pages with trailers and cast." Its video is made of illustrations, not the app running. The App Store seller is Animetra OU (id 6813056685); version 1.1.2 was released on October 9, 2026.
Aniline Applications Inc.
Bluesky and Mastodon client with its tabs moved to a side column on the open Duo
App Store confirmed: Aniline Applications, in its post announcing Indigo 1.3.5 on Bluesky (bsky.app), and in the App Store release notes for version 1.3.5 (released October 8, 2026): "iPhone Duo support".
On World Tech LLC
Bill splitter with the bill on one page and the people on the other
App Store confirmed: The App Store description: "On iPhone Duo, unfold it and the bill sits on one page with the people who shared it on the other." It lists the Duo layouts held upright and half-folded, and the release notes for version 2.3 (released October 7, 2026) also mention the Duo.
Radiantlabs, LLC
A live globe on the cover and a satellite weather map across the open Duo
App Store confirmed: The Living Earth account, in a post on X with a promo image of the Duo version (@livingearthapp on X): "Living Earth is coming with a planet that spreads across the whole inner display". The App Store seller is Radiantlabs, LLC (id 379869627). The release notes for version 4.50.1 (released October 13, 2026) say a bigger world on iPhone Duo: unfolded, the Earth spreads out across the inner display.
Rafael Pages
Underwater camera whose buttons move to the edges of the open Duo
App Store confirmed: Rafa Pagés, who makes MadiCam, in a post on X with pictures of the closed and open phone (@rafamolone on X): "I guess MadiCam now supports the iPhone Duo". The App Store seller is Rafael Pages (id 6796099966). Version 1.2 (released October 20, 2026) says in its release notes "Madicam now supports the iPhone Duo!" The description doesn't mention the Duo.
Alireza Khoddam
A Persian calendar that shows the day's details beside the month when open
App Store confirmed: The developer, Alireza Khoddam (@alirezza), in a post on X in Persian saying the update with iPhone Duo support is out, with pictures (@alirezza on X). The App Store seller is Alireza Khoddam (id 918251515). The notes for version 4.6 (released October 9, 2026) say it adds support for iPhone Duo.
Smaat Pay LLC
A puzzle adventure with one world on the cover and another inside
App Store confirmed: The App Store description, by the seller Smaat Pay LLC, says it is built for iPhone Duo: every level has an outer world you see with the phone closed and an inner world when you open it. The App Store screenshots show an ordinary iPhone, not the Duo. Version 1.2 (released October 12, 2026) has release notes that don't mention the Duo.
Foyer Objet Inc.
Document and card vault with the list beside the open item on the Duo
App Store confirmed: The Uplock account, in a post on X with a promo image (@UplockApp on X), and the App Store release notes for version 3.4.2 (released October 9, 2026): "Uplock is ready for iPhone Duo... Uplock seamlessly adapts the UI as you open, close, and rotate the device."
Dmitry Mashkin
Build a PDF on the cover, set the format beside the photo when open
App Store confirmed: Artcoast Studio (@DesignArtcoast) posted that HEICJPG 2.7 is redesigned for iPhone Duo, with screenshots of the cover and the open screen (@DesignArtcoast on X). The App Store seller is Dmitry Mashkin (id 6714468993). Version 2.7 (released October 10, 2026) is the current version, and its release notes say: "Added support for iPhone Duo and improved performance."
Triple Glazed Studios LLC
Places on one half, the chosen city's weather on the other
App Store confirmed: Malin Sundberg posted a picture labeled Mercury Weather for iPhone Duo (@malinsundberg on X). Malin's X profile says Malin builds Mercury Weather, the App Store description quotes Malin from Triple Glazed Studios, and the seller is Triple Glazed Studios LLC (id 1621800675). The App Store release notes for version 3.8.1 (released October 9, 2026) say the update unfolds Mercury on iPhone Duo: locations next to the forecast when open, the familiar iPhone layout when folded, and two windows side by side to compare places.
Shivendra Ananthan Chelliah
A calorie gauge beside six macro rings on the open Duo, the day on the cover
App Store confirmed: The developer, Shiv (@couteaushiv), posted four screenshots of Moraea on iPhone Duo and said the Duo version is a work in progress but close (@couteaushiv on X). The App Store seller is Shivendra Ananthan Chelliah (id 6769812383). The release notes for version 3.3 (released October 18, 2026) say Moraea adds full support for iPhone Duo, with layouts for both displays.
Francisco Martínez
One skyline a day, grid beside city when you unfold
App Store confirmed: Francisco Martínez, the developer, in a post on X with a video of YAGURA on the iPhone Duo, saying on Duo the grid and city sit side by side (@framara on X). The current version, 1.0.4 (October 10, 2026), has release notes that say 'Made for iPhone Duo. Unfold it and the grid and the city sit side by side: turn one and the other turns with it.'
Dimitris Kontaris
Daily logic-grid mysteries; on the Duo, the grid on one half and the clues on the other
App Store confirmed: The release notes for version 1.0.4 say "Alibi is ready for iPhone Duo": unfold it and the case file opens across the inner display like a book, with the board on the left page, the clues on the right and nothing to tap on the crease; folded, it plays on the outer display. A promo image of the Duo is among the App Store screenshots.
Andrew Yates
Sunrise and sunset forecasts, with the scene above the map and time when half-folded
App Store confirmed: Andrew Yates, the developer, in a post on X showing Alpenglow on the Duo half-folded and closed (@ay8s on X), and in the v12.1 press release, which said Duo support arrives on October 23, 2026. The App Store's current version, 12.1.1 (released October 18, 2026), says in its release notes that screens throughout Alpenglow are optimized for iPhone Duo; it does not describe the layouts.
Daniel Plata
A One Piece card binder that opens into a two-page spread
App Store confirmed: Bounty's website shows a Duo video of the collection adapting as the phone opens (bountytcg.app). The App Store release notes for version 2.8.1 (released October 15, 2026) are headed "Ready for iPhone Duo!": opening it spreads the binder across the inner display, with stats beside its name and the page controls at the side.
Alessandro Pace
The whole case on the cover; open, every suspect's clue sits beside the board
App Store confirmed: Alessandro Pace, the developer, in a reply on X linking ClueGrid's iPhone Duo page (@AlessandroPace on X), which says it is ready for the Duo and shows it on the cover and open (getcluegrid.com). The current version, 1.5 (October 7, 2026), has release notes that say 'New build for iPhone Duo'.
Thye Chean Lim
Bricks fill the cover; open, panels of score and lives frame the playfield
App Store confirmed: The developer, Lim Thye Chean, posted that Cosmo Smash is updated for iPhone Duo, with pictures of it closed and open (@thyechean on X). The App Store notes for version 2.3 say it supports iPhone Duo.
E.J. Kalafarski
Pick an old photo on the cover, then unfold to hold it up large against the street today
App Store confirmed: E.J. Kalafarski, the developer, in a post on X with a video of Déjà Vu on the cover and open, saying it is updated for iPhone Duo (@ejkalafarski on X). The release notes for version 4.0.2 (released October 22, 2026) say "Updated for iPhone Duo."
Aleksandr Orlov
A Jellyfin music player with the queue beside the player on the open Duo
App Store confirmed: Alexander Orlov, the developer, in a YouTube demo on the Duo (youtube.com). The App Store description for version 0.7.10 (released October 19, 2026) says the library navigation and a dedicated player make the most of iPhone Duo, with artwork, playback controls and the queue or lyrics together on its expanded screen and layouts that respond as you rotate or fold.
Gero Gerber
Memories and people in two columns of cards that move apart when you half-fold it
App Store confirmed: Gero Gerber, the developer, in a post on X with screenshots of Meetory open flat and half-folded on the iPhone Duo, asking whether the layout is the right call (@gerogerber on X). The App Store release notes for version 1.10.0 (released October 15, 2026) say Meetory now supports iPhone Duo and adapts to every pose, open or closed; the description adds that screens like your profile and photos split around the hinge.
Anand Raj R
Countdowns to big days, with notes and to-dos beside the event's photo when open
App Store confirmed: Anand Raj R, the developer, in a post on X saying Memento is now optimised for iPhone Duo, with screenshots of it closed and open (@arrcade_dev on X). The App Store release notes for version 2.7 (released October 8, 2026) say "The app is now ready for iPhone Duo."
Anthem Visuals KC LLC
Number-system drills on the cover; open, all four drills beside your daily goal
App Store confirmed: Camryn Clay, the developer, in a post on X with screenshots of Nashville Trainer on the Duo's cover and open (@CamTalksTech on X). The App Store description for version 3.0.2 (released October 14, 2026) says it is made for iPhone Duo: opened, a chart reads like two pages of a book.
Francisco Martínez
Your TV watch list on the cover, and two columns, schedules and seasons when open
App Store confirmed: Francisco Martínez, the developer, in a post on X with a video of Previously on the iPhone Duo, saying it is ready for the Duo (@framara on X). The App Store release notes for version 1.0.6 (released October 10, 2026) say it is made for iPhone Duo: the Watch List side by side when open, and a quick check on the cover when folded.
Dimitris Kontaris
UK take-home pay calculator; on the Duo, salary on one half and take-home on the other
App Store confirmed: The release notes for version 1.3.1 say "SalarySnap is now ready for iPhone Duo": open the phone like a book and Calculate becomes two pages, salary and pension on one and take-home on the facing page, with the split on the fold; Compare salaries opens out the same way. A promo image of the Duo is among the App Store screenshots.
austin blake (2196, LLC)
To-dos one list at a time on the cover, with a sidebar of all your lists when open
App Store confirmed: austin blake, who makes Stuff, in a post on X with a video of it on the iPhone Duo, saying it is being optimized for the Duo with more to do (@austnstuff on X). The App Store seller is 2196, LLC, whose website is the developer's; the release notes for version 2.4.4 (released October 12, 2026) say Stuff is "fully optimized for the iPhone Duo."
Ignacio Soto Bustos
Chess tournament follower with one board beside the round's other games
App Store confirmed: Ignacio Soto Bustos, the developer, in a post on the Watch Chess account on X with pictures of the app on the Duo, captioned "Watch Chess for iPhone Duo coming soon!" (@watch_chess on X). The App Store release notes for version 13.1.0 (released October 16, 2026) say it supports iPhone Duo, with layouts that adapt as you fold, unfold and rotate.
Cover forecast closed, day summary beside the 24-hour strip when open
App Store confirmed: Airwolf Space, the studio behind Weather mini (sold on the App Store by Kai Luo), posted a 12 s Duo simulator video of the layout it said was coming later this month (@airwolfspace on X). The App Store release notes for version 3.9.1 (released October 17, 2026) mention a fix for weather card interactions on iPhone Duo, without describing the layout.
24me Ltd
A task list closed, list and details side by side open, and a full week calendar
App Store confirmed: Liat Mordechay Hertanu of 24me, in a reply on X saying 24me is coming to iPhone Duo with layouts redesigned for the open display (@liatmord on X), with design previews on 24me's site (24me.app).
Prism32 LLC
Your book and a reading timer on the cover, a two-page spread inside
App Store confirmed: The developer's account, @actuallyreadapp, posted a video of Actually Read on iPhone Duo (@actuallyreadapp on X). The release notes for version 1.3.0 (released October 21, 2026) say "Improve the reading experience on iPhone Duo."
Myles Resnick
A blackjack trainer with the table on one half and the coach on the other when open
App Store confirmed: Myles Resnick, the developer, in a reply on X saying BlackJackal would be ready on day one (@mfresnick on X), and on the app's iPhone Duo page with screenshots of it closed and open (blackjackal.ca). Version 2.0 (released October 13, 2026) says it is designed for iPhone Duo: the table on the outer display, and the coach side by side when open.
Furkan Simsir
Your day's macros beside the food camera on the open Duo
App Store confirmed: The developer (@afsimsir on X) said Calorific is ready for iPhone Duo, with pictures of it closed and open (@afsimsir on X), and the App Store release notes say Calorific now supports iPhone Duo.
Camarts Inc.
A photo gallery that grows from two columns to four, with each picture beside its map
App Store confirmed: Dandy Weng, who makes Camarts, in an email to FoldHunt on October 22, 2026 saying version 3.0 is live and the gallery expands from two columns to four when open, and in a post on X with images of Camarts on the iPhone Duo, saying it is going wide on the Duo (@dandyweng on X). The App Store seller is Camarts Inc. The release notes for version 3.0 (released October 21, 2026) say it is designed for Duo, with a reimagined experience for iPhone Duo's new screens in every pose.
Tanmay Sonawane
Half-fold it and the spending chart and transaction list scroll apart
App Store confirmed: Tanmay Sonawane, the developer, in a post on X with a video of Finma's transactions screen open and half-folded on the iPhone Duo (@tanmays on X). The App Store release notes for version 2.5 (released October 12, 2026) say only "iPhone Duo Support."
24me Ltd
Your groups closed, and everyone's week with their photos when the phone is open
App Store confirmed: Liat Mordechay Hertanu of 24me, in a reply on X saying GroupCal is coming to iPhone Duo with layouts redesigned for the open display (@liatmord on X), with design previews on 24me's site (24me.app).
Worathiti Manosroi
Saved articles as magazine covers when closed, a photo-and-text spread when open
App Store confirmed: Pung Worathiti, the developer, in a reply on X to a call for day-one iPhone Duo apps, with a video of LaterAI on the iPhone Duo (@pungme on X). The App Store release notes for version 2.0.8 (released October 10, 2026) say only "iPhone Duo support."
Cntxt Limited
Your day planner and habit streaks in two panes when open, your life in years on the cover
App Store confirmed: Cristian Rus, the maker, in a post on X with images of Left on the iPhone Duo, saying it comes to the Duo on day one (@CristianRus4 on X). The release notes for version 2026.10 (released October 20, 2026) say "Left is ready for iPhone Duo from day one."
Mammatus Weather LLC
The forecast on the cover, the radar across the whole open screen
App Store confirmed: The app's account (@MammatusWx on X) posted a preview of Mammatus Weather on the cover and the open phone (@MammatusWx on X), and the App Store release notes for version 26.10 (released October 10, 2026) list iPhone Duo support.
Bora Keum
A pixel cat's room beside the week's tasks on the open Duo
App Store confirmed: The developer, ソースケ (@boraborabeee on X), posted a dev diary video of Meowtine adapted for iPhone Duo (@boraborabeee on X). The App Store release notes for version 2.0 (released October 9, 2026) say that on iPhone Duo the cat's room sits on the left and your to-dos on the right, with the room bigger when the phone is upright.
Moises Willis
A record visualizer on the standing cover, album and artist pages side by side open
App Store confirmed: Moises Willis, the developer, on X: work on the iPhone Duo version has started and Needl will have day-one support, with four previews of it on the Duo (@Mboywil97 on X, @Mboywil97 on X). The App Store release notes for version 1.0.25 (released October 17, 2026) say Needl has full support for iPhone Duo, with a new design: a bigger canvas for the collection open, and a layout that fits the outer display closed.
Runmo Labs
Running stats and coaching in two columns when open, one scrolling column on the cover
App Store confirmed: David Stancik, in a post on X with a video of Runmo on the iPhone Duo, saying it is fully prepared for the Duo (@_stnck on X). The App Store release notes for version 1.0.7 (released October 10, 2026) are headed "Hello, Duo" and say Runmo is ready for the launch, using the new display sizes and options.
Antonio Chavez
Sign cards on the cover, then the cards on one half and a sign's details on the other
App Store confirmed: Antonio A. Chavez, SignDict's founder (per the app link and title in the X bio), in a post on X with a video of SignDict closed and open on the iPhone Duo, saying it now supported the Duo and was being submitted to the App Store (@antonio07341176 on X). The App Store release notes for version 2.0.0 (released October 17, 2026) say "Added iPhone DUO support."
Astrio, LLC
A podcast player with the transcript beside the artwork when open
App Store confirmed: The developer, Shawn Hickman, posted Sofa's redesigned podcast player on the Duo and said iPhone Duo support was coming along (@poohbers on X). Version 5.4 (released October 14, 2026) says: "Sofa is ready with full support for iPhone Duo."
Francisco Martínez
Saved Spaces side by side when open, and the same Space carries on when you fold it
App Store confirmed: Francisco Martínez, the developer, in a post on X with a video of ToMe on the iPhone Duo, saying it is ready for the Duo (@framara on X). The App Store release notes for version 2.2.2 (released October 10, 2026) say it is made for iPhone Duo and adapts as you fold and unfold, keeping your space and your place.
Mohammads A Mansuri
Today's sky on the cover, the sky beside the hourly and 10-day forecast when open
App Store confirmed: The developer, posting on X as Moooo, with a video of Weather 360 on the iPhone Duo, saying it is iPhone Duo ready and linking a TestFlight beta (@Mohamma98127565 on X). The App Store release notes for version 3.1 (released October 14, 2026) say it supports iPhone Duo with a layout that unfolds with the phone.
Parker Ortolani
Your saved AI prompts in one column closed, two columns and a wider keyboard grid open
App Store confirmed: The App Store release notes for version 1.1.2 (released October 13, 2026) say "User interface optimized for iPhone Duo"; they do not describe the layouts. The developer's earlier preview of the update was posted on X, but that post has since been deleted.
Brian Gerfort
Camera-to-phone photo transfer that opens into a bigger photo, thumbnails and collections
App Store confirmed: Brian Gerfort, the developer (2ndNature), in a Mastodon post with a recording of the current App Store version on the iPhone Duo simulator, saying it already switches to its iPad mini layout when opened and that more work is planned (mastodon.nu). The App Store release notes for version 8.1.2 (released October 11, 2026) say only "Added support for iPhone Duo."
David Collado Sela
Photo cleaner, compare similar shots side by side when open, swipe the rest closed
App Store confirmed: David Collado Sela, the developer, in a Bluesky post saying Undolly is almost ready for iPhone Duo, with a preview video (bsky.app). The App Store release notes for version 4.6.0 (released October 13, 2026) say it is made for iPhone Duo: unfolded, a group opens as a mosaic of up to eight photos; folded, the photo stays large, and the review buttons move to the side bar.
Nonstrict B.V.
Screen recording editor whose controls move to the sides when the Duo opens.
App Store confirmed: Mathijs Kadijk of Nonstrict, in a Bluesky post (bsky.app). The App Store seller is Nonstrict B.V.
Weichao Deng
Pro camera whose collections spread across the open Duo and shrink to one photo shut.
App Store confirmed: Weichao Deng (@JuniperPhoton), in a post on X. The App Store seller is 伟超 邓, Weichao Deng, and the X profile links juniperphoton.dev.
Ricardo Martinez
Risk register on the cover, register and risk detail side by side when the Duo opens.
App Store confirmed: Ricardo Martinez, in the "Risky Business on iPhone Duo" post on the app's blog (riskybusinessapp.net), says version 2.13 rebuilt the app for the Duo and would be released once the phone is on sale; a later post describes version 2.14 (riskybusinessapp.net). The App Store lists 2.14 (released October 18, 2026), whose notes mention the Duo. The App Store seller is Ricardo Martinez Benesenes.
Muhammed Sahil Arayakandy
Interval timer chains whose native toolbars reflow onto the open Duo.
App Store confirmed: Sahil AK (@mdsahilak), in a post on X, while adapting TimeWave for iPhone Duo. The App Store release notes for version 4.21.1 (released October 11, 2026) say: "TimeWave comes to the iPhone Duo. Open it wide, fold it halfway, or turn it sideways. Your timer and controls move with you." The X profile's site, mdsahilak.com, lists TimeWave and is copyright Muhammed Sahil Arayakandy, the App Store seller, and the bio reads "indie @timewave_app".
Danny Behar (Starduck Studio)
Sheet music reader with the score above the fold and a tuner below it.
App Store confirmed: Danny Behar, the developer, in a Bluesky post with pictures of Tutti on the iPhone Duo (bsky.app). Danny said Tutti was coming to iPhone for the Duo's launch day. The App Store version, 3.4 (released October 20, 2026), now runs on iPhone, and its release notes say Tutti has been reimagined for iPhone Duo. The App Store seller is Starduck Studio, LLC, which Danny's profile links.
On World Tech LLC
A daily journal with facing pages on the Duo
App Store confirmed: On World Tech LLC, the developer, in the App Store release notes for version 1.5 (released October 7, 2026), which say that half-folded like a book, the right page keeps today's notes, with a star crossing the fold to your statement. The App Store pictures all use ordinary phone frames.
Syoutarou Ookura
An unofficial guide to Roblox games that fills the larger screen on the open Duo
App Store confirmed: Syoutarou Ookura, the developer, in the App Store release notes for version 2.7.4 (released October 11, 2026), which say the app supports iPhone Duo and fills the large screen when opened. The notes are in Japanese.
COPAtec GmbH
Compare App Store listings across countries, with the list beside the details when open
App Store confirmed: COPAtec GmbH, the developer, in the App Store release notes for version 2.1.0 (released October 8, 2026), which say the app is ready for iPhone Duo, with the list and details side by side on the large display, aligned with the fold, and bars along the edge. The App Store pictures show phone and iPad screens.
Serhii Kotenko
A number puzzle that puts the score and pieces beside a larger board on the open Duo
App Store confirmed: Serhii Kotenko, the developer, in the App Store release notes for version 1.4.0 (released October 14, 2026), which describe a bigger board on iPhone Duo and iPad, with score, pieces and daily goals in a side panel, and a game that carries on when you fold or unfold the phone. The App Store pictures show ordinary portrait phone screens.
Haruhiko Kishi
A word puzzle with answer slots on the top screen and letter tiles below, half-folded
App Store confirmed: Haruhiko Kishi, the developer, in the App Store release notes for version 1.3.5 (released October 13, 2026), which describe answer slots on the top screen and letter tiles on the bottom when the phone is open halfway. The App Store pictures don't show that layout.
Sora Katoh
Set a practice tempo with the phone's opening angle
App Store confirmed: Sora Katoh, the developer, in the App Store description for version 1.0 (released October 15, 2026), which says the opening angle of the iPhone Duo sets a practice tempo that you can lock and then play to.
Kevin Lawrence
A spending tracker that opens your overview beside your dashboard
App Store confirmed: Kevin Lawrence, the developer, in the App Store release notes for version 1.3 (released October 16, 2026), which say the app is built for iPhone Duo, with controls in a side bar and the overview beside the dashboard when the phone is unfolded. The App Store pictures are phone screenshots that don't show the Duo layout.
Kunal Panchal
A breathing orb that follows opening and closing
App Store confirmed: Kunal Panchal, the developer, in the App Store description for version 1.0 (released October 15, 2026), which says that on iPhone Duo you open the fold to inhale and close it to exhale, with the orb following the hinge.
JOEMET123 LLC
A scoreboard above the fold and bubbles below
App Store confirmed: JOEMET123 LLC, the developer, in the App Store description for version 3.6 (released October 11, 2026), which says that half-folded, the top screen becomes a scoreboard while the bubbles play below. The App Store pictures show wide, flat play screens.
SaaSAI Holdings LLC
A pre-roll dual-camera recorder whose FULL format fills the open Duo
App Store confirmed: SaaSAI Holdings, the developer, in the App Store description and the release notes for version 1.0.2 (released October 13, 2026), which add iPhone Duo support and a FULL format laid out for the open screen.
Carlo Bini
Face-to-face translation, with each person's half of the Duo turned to face them
App Store confirmed: Carlo Bini, the developer, on the app's site and in the App Store description, which say DuoVox adapts to the phone closed, half-folded, open and stood as a tent, keeping text clear of the fold and the camera. Version 1.0 was released October 13, 2026.
Uniation Software Co.,Ltd.
Bend the phone to charge a paper catapult, then open to launch
App Store confirmed: Uniation Software Co.,Ltd., the developer, in the App Store description for version 1.0 (released October 14, 2026), which says the Duo's hinge is the catapult's throwing arm. Touch controls can be switched on in Settings.
Marius Caciulescu
A random picker whose wheel grows on the open Duo, or splits into two wheels
App Store confirmed: Marius Caciulescu, the developer, in the App Store release notes for version 2026.10.15 (released October 16, 2026), which describe a larger wheel when the phone opens and two wheels side by side, each with its own list. The App Store pictures show ordinary iPhones.
Chien Yu Wang
Virtual paper whose fold can follow the Duo's hinge
App Store confirmed: Chien Yu Wang, the developer, in the App Store description for version 1.10.14 (released October 16, 2026), which describes a half-folded canvas centered on the hinge, a tool panel that steps aside, and a mode that folds the paper along the hinge.
Ndna Innovations Inc.
A voice-following teleprompter that can show your script on the Duo's back screen
App Store confirmed: Ndna Innovations Inc., the developer, in the App Store description for version 1.1 (released October 16, 2026), which says the app is built for iPhone Duo: film with the rear cameras and read your script on the back screen, over your own face. The developer's site makes the same claim. The App Store pictures show ordinary iPhones.
Bala Technologies LLC
A roll-ball arcade game whose slope follows the Duo hinge
App Store confirmed: Bala Technologies LLC, the developer, in the App Store description for version 1.2 (released October 17, 2026), which says that on iPhone Duo, standing the phone on a table like a small laptop lets the angle of the raised half set the board's slope. Other devices use a slider.
Kripanshu Jindal
News briefs with the story and its context on two pages of the open Duo
App Store confirmed: Kripanshu Jindal, the developer, in the App Store description for version 2.0.0 (released October 16, 2026), which has a section for iPhone Duo: opened, stories spread across two pages, with the photo, coverage, timeline or people on one side and the brief on the other. The App Store pictures don't show the Duo.
Jannis Guhl
A drawing app for the Duo: draw on one half, close the phone, open it to a mirrored print
App Store confirmed: The developer, in the App Store description for version 1.0.0: drawing needs an iPhone Duo with iOS 27.1, and closing the phone fully and reopening it makes a mirrored imprint. The only App Store image is a screen on an ordinary iPhone explaining the Duo requirement. There are no pictures of it on the Duo yet.
LeoStudio Global
A sky map of stars, planets and constellations that widens when the Duo opens
App Store confirmed: The developer, in the App Store release notes for version 3.1.0: open, the Duo shows a wider sky view, and the map adapts as the phone folds.
Subvolume
A personal map of saved places, which sit beside the map when the Duo opens
App Store confirmed: Oliver Lukman (@subvolume), in a post on X on October 11, 2026 with a picture of the app on a partly open Duo (@subvolume on X), and in the App Store release notes for version 1.2 (released October 11, 2026): "Find a spot on the go, then unfold for the big picture." The App Store seller is Subvolume (id 6759034368).
Insania labs LLC
A flight tracker with your flights beside the map when open
App Store confirmed: The developer, in the App Store release notes for version 2.0.2: open, your flights and the map sit side by side.
Mobile Alchemy
Turns a PDF into a print-ready booklet, preview on one half and settings on the other
App Store confirmed: The developer, in the release notes for version 2.4 (released October 10, 2026): "Built for iPhone Duo: open the fold like a book, with the preview on one side and Settings on the other." There are no pictures of it on the Duo yet. The App Store seller is MOBILE ALCHEMY LTD (id 6765602929).
Billy Harris
A UK pint-price map whose compass points to the nearest pub beside the map
App Store confirmed: The developer, Billy Harris, in a video on X of CheapestPint on the open Duo, posted on October 11, 2026 while building for it (@billycantcode on X). The App Store seller is WILLIAM JAMES HARRIS (id 6794473945). Version 1.4 (released October 16, 2026) says it is made for iPhone Duo and iPad: open, the map and a pub sit side by side, the feed shows a post next to the list, and the compass draws the walking route to the pub it points at.
Eline's Table
Plant-based recipes with the step up top and the timer below, half-folded on the counter
App Store confirmed: The developer, in the release notes for version 7.1 (released October 10, 2026): "Eline's Table is now ready for iPhone Duo, in every position. In Cook Mode, set it half open on the counter: the step on top, the timer below." The description says the same. In France the app is called Patate & Cornichon. There are no pictures of it on the Duo yet. The App Store seller is Patate & Cornichon Inc. (id 6517349499).
Nabu Casa
The smart home app tells your home how far the Duo is open, and fits the cover
App Store confirmed: The developer, in the release notes for version 2026.10.0, repeated in 2026.10.1 (released October 11, 2026): "iPhone Duo hinge and pose sensors" and "Better layout on iPhone Duo". The changes were made in the open-source app by Bruno Pantaleão Gonçalves (GitHub pull requests 5862 and 5917); the screenshots in 5917 show the tab bar in the cover's side column. Found through a post by elektrologisch.ch on X on October 11, 2026, with a screenshot of the 2026.10.0 notes. The App Store seller is Nabu Casa, Inc (id 1099568401).
Nikhil Kishore
A private journal and tracker with your day on one half and a tracker on the other
App Store confirmed: The developer, in the release notes for version 3.0 (released October 6, 2026): "Made for iPhone Duo. Unfold it and Home shows your day on one side and the tracker you opened on the other. Covers, the journal, the calendar, settings and setup screens all lay out across both panels, nothing sits on the crease, and folding keeps your place." There are no pictures of it on the Duo yet. The App Store seller is NIKHIL KISHORE (id 6792374192).
Leo Rivas-Micoud
A hands-free reader whose book opens as a spread with the spine on the fold
App Store confirmed: The developer, in the release notes for version 2.0.2 (released October 10, 2026): "iPhone Duo — unfold it and your book becomes a two-page spread, with the spine right on the fold." The description says it is ready for iPhone Duo. The first App Store screenshot shows two open Duos, one with a book as a two-page spread either side of the fold and one with the bookshelf. The App Store seller is Leo Rivas-Micoud (id 6794322508).
Wenzhou Duoying E-Commerce Co., Ltd.
A voice expense log that shows ledgers, entries and stats in three columns open flat
App Store confirmed: The developer, posting as Penvo Developer on X on October 10, 2026 with a picture of the open layout (@NDming853 on X), and in a Medium post the same day. The release notes for version 4.8.0 (released October 7, 2026): "iPad and iPhone Duo support: big screens show three columns — ledgers, entries and stats". The App Store seller is Wenzhou Duoying E-Commerce Co., Ltd. (id 6766038118).
Joseph Iannazzone
A ham radio toolkit getting its iPad layout on the open Duo, bands beside the countries
App Store confirmed: QRV's developer (Adam I on Bluesky, whose profile links QRV's App Store page), in posts on Bluesky on October 6 and October 11, 2026, the second with screenshots of work in progress on the iPad and Duo layouts (bsky.app). The App Store release notes for version 1.30 (released October 18, 2026) add iPad and iPhone Duo support: on the unfolded Duo, a sidebar like the Mac's replaces the tab bar, and folding lands on the list while unfolding keeps what you opened. The App Store seller is Joseph Iannazzone (id 6754951380).
Joshua Campbell
The USVI Life blog about island living, ready for the Duo
App Store confirmed: The developer, in the release notes for version 1.2 (released October 10, 2026), "iPhone Duo Ready: improved adaptive layouts", and in a Bluesky post the same day (bsky.app), whose picture shows an ordinary iPhone. The last App Store screenshot, headed Made for iPhone Duo, shows it on two open Duos: the article list held upright, and an article with a map held wide, each with the tab buttons in a rail down the right side. The App Store seller is Joshua Campbell (id 6807106067).
Haruhiko Kishi
Flash mental-math drills with numbers on top and the answer pad below the fold
App Store confirmed: The App Store release notes for version 1.3.0: "Now optimized for iPhone Duo. Set it half-open like a laptop: the numbers flash on the top screen while the bottom screen shows which problem you're on... When it's time to answer, the bottom screen turns into a number pad."
Juste Tools LTD
A retro photo booth that stands on the table, with a countdown for guests on the cover
App Store confirmed: The App Store description, in a "Made for iPhone Duo" section: set Duo on a table for a hands-free session, with a preview and countdown for your guests on the outer display (it requires iPhone Duo with iOS 27.1 or later). An earlier version of the section said the viewfinder stays above the hinge with the controls below it, and that the outer display shows the photo progress.
Withnico LLC
A shower tracker whose drop mascot counts the water while the Duo stands
App Store confirmed: The developer, Nicolò Curioni (@withnico_mars), co-founder of Withnico, in a post on X with a first-look video of Intelly on the iPhone Duo (@withnico_mars on X). The App Store seller is Withnico LLC (id 1514225263). The notes for version 8.0 (October 9, 2026) introduce Pip and say it is currently exclusive to iPhone Duo.
Maksim Tatarchenkov
Origami where the paper on screen folds as you fold the phone
App Store confirmed: The App Store description, by Maksim Tatarchenkov, calls kami an origami simulator for iPhone Duo, and the release notes for version 1.1 (released October 9, 2026) say "iPhone Duo support: fold the paper by folding the device!" The app is open source (github.com). Its demo video was filmed on an Android foldable, not a Duo.
Mustafa Bhatkar
Ambient sound mixer, the scene and timer on the raised half, controls on the table
App Store confirmed: The App Store release notes for version 1.0.5 (released October 9, 2026), by the developer Mustafa Bhatkar, say "Optimised for iPhone Duo" and describe a seated mode for the phone rested half-open.
Random Projects, LLC
A tally counter that sits up like a laptop: the count on top, big buttons below
App Store confirmed: The developer, Josh Hrach, posted a screenshot of Countr half-folded on iPhone Duo and said it will be ready for the Duo real fast (iosdev.space). The App Store seller is Random Projects, LLC (id 911664683). The release notes for version 4.2 (released October 19, 2026): "iPhone Duo Ready - Countr looks great on the outer and inner display. Using it in laptop pose? Your count fills the top half of the screen, with the + and - buttons right below it."
Anders Johansson
Hinge details on the closed cover, and a frame for a closed Duo
App Store confirmed: Anders Johansson says on the app's site that Framedevice is made for iPhone Duo (idrewn.github.io). The site's screenshots show it in the iPhone Duo simulator: closed, the Device tab reads posture Closed, hinge angle 0° and no fold regions, and Mockups can frame a closed Duo. It was in TestFlight (testflight.apple.com) and is now on the App Store (version 1.2, released October 22, 2026), whose description has a "MADE FOR IPHONE DUO" section.
Eunaware Inc
Open, a place's photo sits beside what to try
App Store confirmed: Maksim Zhelezniakov posted the place screen on an open iPhone Duo (@jems19s on X). App Store version 1.3.0 (id 6746510775, released 2026-10-08) says "Made for iPhone Duo, plus small fixes." The description does not mention the Duo, and the App Store screenshots are a regular iPhone.
BKRXY LLC
A math quiz on the lower half when the Duo is half-folded
App Store confirmed: The @BellaandPan account posted a half-folded Duo shot with the forest scene above the crease and a math question with answer buttons below (@BellaandPan on X), and says all six Duo layouts are supported. The App Store seller is BKRXY LLC. The description now says the game plays on iPhone, iPhone Duo and iPad, in portrait and landscape; the current version is 1.3.9 (October 19, 2026).
Jordan Yeats
Startup merger strategy game with the board and the trading desk on facing halves
App Store confirmed: The App Store release notes for version 1.4.0, by the developer Jordan Yeats, say it is made for iPhone Duo: open, the board sits on one side of the hinge and the market listings on the other. A Duo-size capture of the board, made from the game's web build, is in its public repository (github.com).
Dani Sánchez
The day's pro cycling races in two columns of cards on the open Duo
App Store confirmed: The app's own account (@CalCiclismo), in a post on X with a picture of it open on the Duo, saying it will be ready on day one (@CalCiclismo on X). The App Store release notes for version 5.1.1 (released October 19, 2026, in Spanish) put the cyclocross "Horarios" in a side column on iPhone Duo and say some Duo views mark transfers with an arrow.
Gentler Stories LLC
A finished run's route map on one half of the open Duo, its stats on the other
App Store confirmed: Gentler Stories, the developer, in a post on X with designs of Gentler Streak on the open iPhone Duo by co-founder Andrej Mihelic (@Gentler_App on X). The release notes for version 5.13.5 (released October 22, 2026) say "This is the second part of Gentler Streak getting ready for the iPhone Duo screen."
Raja Vijayaraman
Hydration pace against a day timeline on the Duo cover
App Store confirmed: The developer, @rajavijayaraman on X, posted two Duo cover screenshots, with the timeline on the left and on the right, asking which is better (@rajavijayaraman on X). The App Store lists the seller as Raja Vijayaraman, and the release notes for version 1.0.5 (released October 20, 2026) say "Made for iPhone Duo."
Jun Oyamada
Study timer and community feed on the Duo cover
App Store confirmed: JunJun (@junjun_nihon) posted the study timer and feed on the Duo cover (@junjun_nihon on X), and version 1.7.3 on the App Store (October 7, 2026) says it added iPhone Duo support.
LOOXY.AI LLC
Wardrobe categories beside the piece grid when open
App Store confirmed: LOOXY (@looxyai) posted a Duo wardrobe layout with category list beside the piece grid (@looxyai on X).
Brady Valentino
Podcast library on the left half, the show you picked on the right
App Store confirmed: The developer's site shows Peapod in a mockup of the open Duo (peapod.fm), and the App Store release notes say the build includes full support for iPhone Duo.
Pencil Research
A paper notebook app that opens into a two-page spread on the Duo
App Store confirmed: slaven (@slaven on X), who codes Penbook, posted a picture of it on the open Duo and said Pencil Research is going deep on iPhone Duo support, crediting Ben Fox (@ductionist) for the work (@slaven on X). The App Store release notes for version 8.1.1 (released October 16, 2026) say the update adds support for poses, new stationery sizes and a minimap update.
Lior Halphon
Game Boy emulator skin that clears the Duo camera hole
App Store confirmed: Lior Halphon (@LIJI32) posted two SameBoy skins for the Duo cover, asking how to keep them from looking lopsided around the camera hole (@LIJI32 on X).
Thye Chean Lim
A retro space shooter with a landscape mode for the closed Duo
App Store confirmed: The developer, Lim Thye Chean, posted that Space War GS is updated for iPhone Duo, with a new landscape mode (@thyechean on X). The App Store notes for version 10.3 say it supports iPhone Duo.
Federico Alvarenga
Set NBA and MMA game alarms on the Duo cover
App Store confirmed: The developer, @SemiClouds on X, posted Duo cover screenshots of Set Alarm for NBA and MMA (@SemiClouds on X). The App Store release notes for version 1.2.7 (released October 14, 2026) say it is built for the iPhone Duo: it respects the side tab bar on both displays and keeps content clear of the hinge, with live games on top and upcoming games below.
Gianpiero Spinelli and Edoardo Galati
Turns Letterboxd reviews into story cards, made start to finish on the Duo's cover
App Store confirmed: Edoardo Galati, who wrote on X that "we launched Stories for Letterboxd" more than five years ago, in a post with a video of the update running on the iPhone Duo's cover, saying it is already optimized for the Duo and comes out later this month (@edogalati on X). The App Store seller is Gianpiero Spinelli. The release notes for version 4.0 (released October 18, 2026) say "Ready for iPhone Duo", and the description says the new design feels at home on every iPhone, including iPhone Duo.
Alexandra Swan
Seven classic games for two; half-folded, the raised screen hides your board
App Store confirmed: Version 1.0.2 came out on October 23, 2026; its release notes mention only a light or dark setting. The App Store description says it is made for iPhone Duo: half-folded, the raised screen covers your board, and folding shut passes the turn while the outer screen calls the next player. The maker's Reddit post shows a promo image of Broadside half-folded (reddit.com).
Emre Degirmenci
Plan an electric car trip, charge levels and all, on the Duo cover
App Store confirmed: The developer (@emrdgrmnci on X) posted the app on the iPhone Duo (@emrdgrmnci on X), and the App Store release notes list iPhone Duo support.
Valter Hemmi
Open, the day's exercises sit beside your sets, with the plates to load drawn for each
App Store confirmed: Valter Hemmi, the developer, in a reply on X to a call for iPhone Duo apps, with an image of Liftin' on the open Duo (@_nstrm on X). The App Store release notes for version 54.0.1 (released October 13, 2026) say only "Support added for iPhone Duo."
Hieu Dinh
Run stats beside the route map, and a dashboard beside the calendar
App Store confirmed: The developer (@hieudinh_ on X) posted Steps as ready for iPhone Duo on day one, with an open Outdoor Run screen (@hieudinh_ on X). The App Store release notes for version 1.33 (released October 13, 2026) have a "Made for iPhone Duo" section and a Home layout setting, but don't describe the Duo layout.
Emre Degirmenci
A new walking route each day, on a 3D map on the Duo cover
App Store confirmed: The developer (@emrdgrmnci on X) posted WalkMate on the iPhone Duo in reply to a call for Duo apps submitted to the App Store (@emrdgrmnci on X). The App Store release notes for version 3.6.0 (released October 22, 2026) say "Built for iPhone Duo."
Stephen Robles
Kanban boards, with the lists down the side and the columns across the open Duo
App Store confirmed: Stephen Robles, the developer, in a Bluesky post with a screenshot of Kan Do on the open iPhone Duo (bsky.app).
Ryley Herrington
Running log that lays today, the month and the year out in two columns when open
App Store confirmed: The developer, Ryley Herrington, in a Bluesky post with an iPhone Duo screenshot, saying RunRev is up and running with Duo changes (bsky.app).
Stefan Sturm
A 90s-style polygon racer, with the road above the fold and the steering and pedals below
App Store confirmed: Stefan Sturm, the developer, in a post on X saying an update adds iPhone Duo support, with a screenshot of the inner display. The App Store version at the time was 1.1, so the Duo update may not be out yet.
Alexander Käßner
Energy tracker that reorders its Duo side bar so the main actions sit at the bottom.
App Store confirmed: Alexander Käßner, in a Mastodon post (mas.to). The App Store seller is Alexander Kaessner.
Dengming Gao
Podcast player whose one-column library fits the Duo's outer display.
App Store confirmed: Deng Gao (@gaodengming), in a post on X saying the Duo adaptation was nearly done. The App Store release notes for version 6.8.0 (released October 10, 2026) list "iPhone Duo". The App Store seller is 登明 高, Dengming Gao.
Daniel Devesa Derksen-Staats
Retro lane racer with an arcade mode: the road on the upper half, steering below.
App Store confirmed: Dani Devesa Derksen-Staats, in a Mastodon post (iosdev.space). The App Store seller is Daniel Devesa Derksen-Staats.
The Church of Jesus Christ of Latter-day Saints
The Latter-day Saints' scripture and study app, updated for iPhone Duo
App Store confirmed: A reader, in a submission to FoldHunt on October 28, 2026. The App Store seller is The Church of Jesus Christ of Latter-day Saints. The App Store release notes for version 7.9.0 (released October 26, 2026) list "Improved support for iPhone Duo." Specific fold adaptations are not yet documented.
Instant Paper
Save articles to read later, offline, in a clean text view. Version 10.1 adds iPhone Duo
App Store confirmed: A reader, in a submission to FoldHunt on October 28, 2026. The App Store seller is Instant Paper, Inc. The App Store release notes for version 10.1 (released October 21, 2026) say: "Add support for iPhone Duo." Specific fold adaptations are not yet documented.
Kayen Works
A collection of Minecraft Add-Ons, plus tools to make and tweak your own
App Store confirmed: The release notes for version 26.10.1 (released October 21, 2026), by the developer Kayen Works, say the app is ready for iPhone Duo, with a fresh new look throughout. A reader sent it to FoldHunt on October 21, 2026, ticking the closed, open, half-folded and Split View poses. Specific fold adaptations are not yet documented.
SIMPLERION Co., Ltd
A to-do list with reminders and widgets, with layouts refined for the Duo
App Store confirmed: SIMPLERION, the developer, in the App Store release notes for versions 7.8.0 and 7.8.1 (7.8.1 was released October 17, 2026), which add support for iPhone Duo, with layouts refined for different screen sizes and orientations. Specific fold adaptations are not yet documented.
Ryouta Kira
A sampler synthesizer with iPhone Duo support in its release notes
App Store confirmed: Ryouta Kira, the developer, in the App Store release notes for versions 1.8.2 through 1.8.5 (1.8.5 was released October 16, 2026), which add support for iPhone Duo. The notes don't explain what changes in each fold position. Specific fold adaptations are not yet documented.
JC Mobile App Studio LLC
Time tracker for games, books and shows, with two pages and a tabletop timer on the Duo
App Store confirmed: JC Mobile App Studio LLC, the developer, in the App Store description, which lists iPhone Duo with a two-page layout and a tabletop timer. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
Yuji Adachi
A minimalist flip clock with an announced iPhone Duo layout update
App Store confirmed: Yuji Adachi, the developer, in the App Store release note for version 2.4 (released October 13, 2026), which adds support for the iPhone Duo layout without describing the layout or any individual pose. Specific fold adaptations are not yet documented.
Sergei Saliukov
A Safari extension that hides YouTube Shorts, with improved Duo support
App Store confirmed: Sergei Saliukov, the developer, in the App Store release notes for version 64.0.9 (released October 15, 2026), which say iPhone Duo support is improved. The notes don't describe any poses or layouts. Specific fold adaptations are not yet documented.
Justin Powers
Card collecting tools with Duo layout improvements in version 2.3
App Store confirmed: Justin Powers, the developer, in the App Store release notes for version 2.3 (released October 12, 2026), which say changes were made for the app to fully support iPhone Duo, along with improved layouts for larger displays, screen rotation and resizing. The developer's changelog says the same. Specific fold adaptations are not yet documented.
SpiceFlow AI, Inc.
An offline music player that turns your songs into live light shows
App Store confirmed: The developer, from the prismatic_fm account, said in a comment on the developer showcase thread in r/iPhoneDuo that the app has Duo layouts, and linked this App Store page and prismatic.fm. The App Store seller is SpiceFlow AI, Inc. The notes for version 2.2.0 (released October 22, 2026) say "Made for iPhone Duo". Specific fold adaptations are not yet documented.
David Jones
A panda-village game whose menus and touch controls now handle folding and rotating
App Store confirmed: David Jones, the developer, in the App Store release notes for version 1.0.1 (released October 7, 2026), which announce iPhone Duo support with improved menus and touch controls for folding, unfolding and rotating the phone. The App Store pictures are landscape screenshots that don't show a Duo or a change of fold. Specific fold adaptations are not yet documented.
Alex Perez
Live bus and train maps, with iPhone Duo support announced in version 1.2
App Store confirmed: Alex Perez, the developer, in the App Store description and release notes for version 1.2 (released October 14, 2026), which announce full support for iPhone Duo. The App Store pictures show an ordinary iPhone. Specific fold adaptations are not yet documented.
2ndNature
Record routes for geotagging photos, with iPhone Duo support added in 1.5.7
App Store confirmed: 2ndNature, the developer, in the App Store release notes for version 1.5.7 (released October 7, 2026), which say the app adds support for iPhone Duo. The App Store seller is Brian Gerfort. The App Store pictures show a map and a recordings sheet on ordinary iPhone and iPad screens. Specific fold adaptations are not yet documented.
Yoshikazu Matsubara
A ledger for celebration gifts and return gifts, with Duo support added in 2.5.0
App Store confirmed: Yoshikazu Matsubara, the developer, in the App Store release notes for version 2.5.0 (released October 10, 2026), which say the app now supports iPhone Duo without describing the layouts. Specific fold adaptations are not yet documented.
Gaffar Ali
Pediatric dose calculator with patient profiles on one screen, the calculator on the other
App Store confirmed: Gaffar Ali, the developer, in the App Store release notes for version 2.2(15) (released October 10, 2026), which say the app is fully optimized for iPhone Duo, with patient profiles on one screen and the dose calculator on the other. The notes don't name a pose. Specific fold adaptations are not yet documented.
Subscription tracking that says it was updated for the iPhone Duo
App Store confirmed: 磊 夏, the developer, in the App Store release notes for version 2.3.0 (released September 21, 2026), which say the layouts were adapted for iPhone Duo without describing them. The current version is 2.4.0, whose notes don't mention the Duo; the App Store description still says the app was updated for iPhone Duo. Specific fold adaptations are not yet documented.
Virtual GS
Pixel painting with classic computer color palettes
App Store confirmed: Virtual GS, the developer, in the App Store release notes for version 3.2 (released October 6, 2026), which say the app supports iPhone Duo. The App Store seller is Thye Chean Lim. The App Store pictures show drawing canvases and color palettes on phone and tablet screens. Specific fold adaptations are not yet documented.
Steven Troughton-Smith
A file-based issue tracker for personal projects
App Store confirmed: Steven Troughton-Smith, the developer, in the App Store release notes for version 1.1.3 (released October 9, 2026), which say the app now supports iPhone Duo without describing the layout. The App Store pictures show issue lists and details on phones and an iPad, not the Duo. Specific fold adaptations are not yet documented.
Satomi Chiba
A photo-border editor that says it works on the open and closed Duo
App Store confirmed: Satomi Chiba, the developer, in the App Store release notes for version 1.0.5 (released October 15, 2026), which claim support for iPhone Duo open or closed, in either orientation. The App Store pictures show an ordinary phone editor. Version 1.0.6 (October 17, 2026) says it is optimized for iPhone Duo. Specific fold adaptations are not yet documented.
Jared Kaeb
A hinge-angle readout on the inner or outer display
App Store confirmed: Jared Kaeb, the developer, in the App Store description for version 1.0 (released October 13, 2026), which says the phone's hinge works as a protractor, with readings on the inner or outer display. The measuring modes need iOS 27.1 or later. Specific fold adaptations are not yet documented.
MobileSoft s.r.o.
An app and website blocker with schedules, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 4.13.3, which say the app is optimized for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
Eshan Marneedi
An offline citation maker for school papers, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 1.3.1 (released October 10, 2026), which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Nick Hayward
A Sonos controller for rooms, groups and music browsing, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 2026.10, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
PIXELSPARK TECHNOLOGY LIMITED
Themes and wallpapers made for the iPhone Duo
App Store confirmed: PIXELSPARK TECHNOLOGY LIMITED, the developer, in the App Store release notes for version 1.22.2 (released September 10, 2026), which offer themes, icons, widgets and wallpapers tailored for iPhone Duo. Specific fold adaptations are not yet documented.
Nikhil Nigade
An RSS reader designed for the Duo, folded or unfolded
App Store confirmed: Nikhil Nigade, the developer, in the App Store release notes for version 2026.10.0 (released October 14, 2026), which say Elytra is designed for iPhone Duo, and for version 2026.10.1 (released October 18, 2026), which add that feeds and articles fit the screen folded or unfolded. The App Store pictures show ordinary phone layouts. Specific fold adaptations are not yet documented.
zheng zhou
Fold and turn the phone to choose a courier's route
App Store confirmed: zheng zhou, the developer, in the App Store description for version 1.0 (released October 14, 2026), which says the Duo's hinge sensing opens a portal when folded and makes a bridge when half-folded, with on-screen buttons as an alternative. Specific fold adaptations are not yet documented.
appRabauken GbR
A hinge-angle gauge with rulers on both displays
App Store confirmed: appRabauken GbR, the developer, in the App Store description for version 1.0.0 (released October 15, 2026), which says the app shows the Duo's angle to the degree, live as you fold, with ruler and diameter tools on the inner and outer displays. The App Store seller is Moya, Manuel und Jonas, Sebastian GbR. Specific fold adaptations are not yet documented.
Denis Yeremuk
Fuel, service and trip records, with iPhone Duo support since the October update
App Store confirmed: Denis Yeremuk, the developer, in the App Store release notes for version 2026.10.20 (released October 11, 2026), which list iPhone Duo support, as the notes for 2026.10.19 did. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
Sygic a. s.
Mileage and car costs, updated for the Duo's larger inner display
App Store confirmed: Sygic, the developer, in the App Store release notes for version 2.9.1 (released October 14, 2026), which say the app is optimized for iPhone Duo, naming the larger inner display and the fold. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
Hernan Rosario
Grade tables, score lookup and assignment tracking for teachers
App Store confirmed: The developer, in the App Store release notes for version 1.6 (released October 10, 2026), which name the grade tables, Quick Lookup and the compact keypad in open, landscape and tabletop layouts. Specific fold adaptations are not yet documented.
Devenyi Gabor
A workout log with exercise guides and progress charts, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 16.7, which say the app is adapted for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
Daniel Hohler Designs
Estimate thickness and angle from the Duo hinge
App Store confirmed: Daniel Hohler Designs, the developer, in the App Store description for version 1.0 (released October 12, 2026), which says the Duo's hinge works as a caliper, a protractor and a ruler. The App Store seller is D-Cade LLC. Specific fold adaptations are not yet documented.
Satomi Chiba
A saved-link list that says it works on the open and closed Duo
App Store confirmed: Satomi Chiba, the developer, in the App Store release notes for version 1.0.3 (released October 15, 2026), which say the app works with iPhone Duo open or closed, in either orientation. The App Store pictures don't show a Duo layout. Version 1.0.4 (October 17, 2026) says it is optimized for iPhone Duo. Specific fold adaptations are not yet documented.
A voice-note app that says its newest release adapts to the folding Duo
App Store confirmed: 橙溪 王, the developer, in the App Store release notes for version 1.3.0 (released October 16, 2026), which announce a new experience for iPhone Duo, and in an App Store event that says recording, transcripts and notes adjust when the phone folds. Neither gives precise pane positions. Specific fold adaptations are not yet documented.
Nils Bernschneider
Language lessons, with the words on one side of the Duo and the lesson on the other
App Store confirmed: The developer, in the App Store release notes for version 1.27.1, which say the app is optimized for iPhone Duo. A current App Store event, not tied to a version, describes the words on one side and the lesson on the other, folded or open. Specific fold adaptations are not yet documented.
Gianfranco Amato
Three neon arcade games; folding switches between brick breaker, pinball and a duel
App Store confirmed: The developer, on the NEOFOLD website and in the App Store description: closed, the cover plays Breaker; half-folded, Pinball; open, Duel. The website says folding pauses the game and asks before switching. The release notes for the current version, 1.0.3, list only fixes. Specific fold adaptations are not yet documented.
iCandi Apps Ltd.
A planetarium with star maps, sky tours and an astronomy assistant
App Store confirmed: The developer, in the App Store release notes for version 27.1 (released October 13, 2026), which claim full iPhone Duo support and name a new layout of the Aura Tonight Tour for seated use. Specific fold adaptations are not yet documented.
Vamsi Yuvaraj Suggula
Match a target angle by feel, then pass the phone
App Store confirmed: Vamsi Yuvaraj Suggula, the developer, in the App Store description for version 1.0.1 (released October 9, 2026), which says the Duo automatically uses the app's Fold mode on iOS 27.1 or later, matching the hinge angle, while other iPhones use Tilt. Specific fold adaptations are not yet documented.
Ivan Pavlov Pty Ltd
A package tracker for deliveries from many carriers, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 8.7.1 (released October 15, 2026), which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Satomi Chiba
Shrinks a photo to the file size you choose, with Duo support open or closed
App Store confirmed: Satomi Chiba, the developer, in the App Store release notes for version 1.0.5 (released October 15, 2026), which say the app supports iPhone Duo, open or closed, in either orientation. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
Satomi Chiba
Joins photos into one picture, with Duo support open or closed
App Store confirmed: Satomi Chiba, the developer, in the App Store release notes for version 1.0.6 (released October 16, 2026), which say the app is optimized for iPhone Duo, open or closed, in both orientations. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
Satomi Chiba
Resizes a photo by pixel size, with Duo support open or closed
App Store confirmed: Satomi Chiba, the developer, in the App Store release notes for version 1.0.7 (released October 15, 2026), which say the app supports iPhone Duo, open or closed, in either orientation. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
Gustas Brazaitis
Filters and editing tools for photos and videos, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 4.0.3, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Marko Krulc
A one-tap motorbike runner that pauses while you fold
App Store confirmed: The developer, in the App Store release notes for version 1.3.0 (released October 14, 2026) and an article on the game's website, with pictures labeled closed, open, book and laptop. The App Store seller is MARKO KRULC. Specific fold adaptations are not yet documented.
Patrick Gruben
A three-lane runner starring a greyhound, adapted for iPhone Duo in its fall update
App Store confirmed: Patrick Gruben, the developer, in the App Store description and the release notes for version 1.1.1 (released October 12, 2026), which say the game is adapted for iPhone Duo without describing a layout. The App Store pictures are tall crops of play. Specific fold adaptations are not yet documented.
Agile Tortoise
Scan paper documents into searchable PDFs, images or plain text
App Store confirmed: The developer, in the App Store release notes and its own changelog for version 10.1 (released October 10, 2026), which say the app is ready for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
Sonos, Inc.
Music, rooms and speaker controls in one app, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 90.1 and its own release notes for Sonos 27.2 (October 15, 2026), which add iPhone Duo interface support without describing the layout. Specific fold adaptations are not yet documented.
Marcus Pleintinger
Saved sequences of Sonos actions, run with one tap, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 10.0.0, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Indest
Top-down racing against other players' ghost laps, on the Duo closed or open
App Store confirmed: Indest, the developer, in its iOS launch post of October 10, 2026, which says the game is ready for iPhone Duo folded or open, and in the App Store release notes for version 1.0.2, released the same day, which optimize it for the Duo. Specific fold adaptations are not yet documented.
Med ART Studios LLC
A week-by-week pregnancy guide and journal, with more room on the iPhone Duo
App Store confirmed: Med ART Studios, the developer, in the App Store release notes for version 19.8 (released October 16, 2026), which optimize the app for iPhone Duo and give it more room, without describing a layout. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
Satomi Chiba
Shows what's left to spend before payday, with Duo support open or closed
App Store confirmed: Satomi Chiba, the developer, in the App Store release notes for version 1.0.4 (released October 17, 2026), which say only "Optimized for iPhone Duo." The App Store pictures show ordinary phone screens. Specific fold adaptations are not yet documented.
Adam Bellow
A marble game where folding the phone pumps the swing
App Store confirmed: The developer, in the App Store description and on the game's website, which say the iPhone Duo's hinge controls the marble, with the horizon on the fold. Version 1.1 came out on October 13, 2026. Specific fold adaptations are not yet documented.
Virtual GS
An offline AI dictionary and encyclopedia for text and image questions
App Store confirmed: The developer, in the App Store release notes for version 1.3, which add iPhone Duo support without describing the layout. The App Store seller is Thye Chean Lim. Specific fold adaptations are not yet documented.
EP Studios
ECG calipers, with the measurement buttons wrapping into two rows when space is tight
App Store confirmed: David Mann, the developer, in a change to the EP Calipers code on GitHub dated October 15, 2026: a toolbar fix for iOS 27 and the iPhone Duo, with the four measurement controls wrapping into one or two rows. The App Store release notes for version 3.11.0 (released October 17, 2026) say "Update for iPhone Duo". Specific fold adaptations are not yet documented.
Timothy Baker
A calendar and reminders app with month, week and timeline views, optimized for the Duo
App Store confirmed: The developer, in the App Store release notes for version 1.6 (released October 15, 2026), which say Eventual is optimized for iPhone Duo in any pose or orientation without describing the layouts. Specific fold adaptations are not yet documented.
Joseph Bishop
A podcast player with searchable transcripts, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 1.7.1, which name improved player and podcast layouts for the iPhone Duo without describing them. Specific fold adaptations are not yet documented.
Foyer Objet Inc.
World architecture in 3D maps, with buildings that pop up as the Duo half-folds
App Store confirmed: The developer, in the App Store release notes for version 3.1 (released October 10, 2026): open the Duo, then partly fold it to tilt the map camera and raise selected buildings like a pop-up card. The App Store images don't show the effect. Specific fold adaptations are not yet documented.
Sylvain Fertons
Personal countdowns with photos, shared events and widgets, laid out for each Duo pose
App Store confirmed: The developer, in the App Store release notes for version 1.7.8: countdown layouts for the Duo closed, open and partly folded, without saying how they are arranged. Specific fold adaptations are not yet documented.
Time Atlas Labs Oy
An automatic diary of places, routes and photos, with layouts that adapt to the Duo
App Store confirmed: The developer, in the App Store release notes for version 1.5.0, which name the iPhone Duo among the screen sizes the layout adapts to, and in an App Store event, "Two screens – one diary," set for October 23, 2026, that promotes maps and photos made for the Duo. Specific fold adaptations are not yet documented.
Guan Feng Lai
English listening and reading practice, in two columns on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 2.0.0: open, the Duo's inner screen uses two columns. The App Store description also says the app is optimized for iPhone Duo. Specific fold adaptations are not yet documented.
AllAboutApps
Everyday utilities, with the ruler and level corrected for the Duo
App Store confirmed: The developer, in the App Store release notes for version 5.0.5 (released October 5, 2026), which correct the Ruler and Level measurements on iPhone Duo. They describe no other changes for the Duo. Specific fold adaptations are not yet documented.
Djordje Subotic
Guide bees to exits on a hexagonal board, leaving honey in their paths
App Store confirmed: The developer, in the App Store release notes for version 1.1 (released September 29, 2026), which say the game is ready for iPhone Duo without describing the layout. The current version is 1.1.1. Specific fold adaptations are not yet documented.
CarbonFin
Notes, lists and tasks organized into outlines, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 3.21, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Grailr LLC
Forecasts, alerts and radar, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 6.9.2, which list iPhone Duo support. The same notes describe multi-window and larger-screen radar changes, without tying them to a Duo pose. Specific fold adaptations are not yet documented.
Saleh Kayyali
An EPUB and PDF reader, with two pages meeting at the fold on the open Duo
App Store confirmed: The developer, in the App Store description and the release notes for version 2.4: open, the Duo shows two pages meeting at the fold when Paginated is selected. Specific fold adaptations are not yet documented.
A voice-following teleprompter that keeps your place as the Duo opens
App Store confirmed: The developer, in the App Store release notes for version 1.6.0 (released October 12, 2026): editing and prompting adapt to the closed and the open Duo, and the reading position is kept. Specific fold adaptations are not yet documented.
Guan Feng Lai
Phrases and replies for everyday conversations, updated for the Duo
App Store confirmed: The developer, in the App Store description and the release notes for version 1.0.7, which say "Optimized for iPhone Duo" without describing the layout. Version 1.0.8 only refreshes the store information. Specific fold adaptations are not yet documented.
Jamie Ward
Voice notes that stay in place as the Duo opens, closes or rotates
App Store confirmed: The developer, in the App Store release notes for version 1.5, which name the closed, open and rotated Duo and say notes are kept better as the phone changes pose. They don't describe the layout. Specific fold adaptations are not yet documented.
Shift planning with two-column pages and a half-folded countdown
App Store confirmed: The developer, in the App Store release notes for version 3.2.1 (released October 11, 2026): open, the Duo shows pages in two columns, and half-folded, the countdown is divided at the fold. Specific fold adaptations are not yet documented.
Agile Tortoise
Quick notes with text actions for sending words to other apps
App Store confirmed: The developer, in the App Store release notes for version 54.1, which say Drafts is ready for iPhone Duo. The changelog on the Drafts website describes the Duo adjustments and warns that some SDK-related issues remain. Specific fold adaptations are not yet documented.
UMUT BILGE V
Digital paper you fold and cut by folding the Duo
App Store confirmed: The developer, in the App Store description: folding the iPhone Duo folds or cuts the digital paper laid across the hinge. Specific fold adaptations are not yet documented.
Aaron Peabody
An accordion you play by opening and closing the Duo
App Store confirmed: The developer, in the App Store description: opening and closing the Duo works the bellows, with bass on one side and treble on the other. The App Store version is 1.0.1, released October 12, 2026. Specific fold adaptations are not yet documented.
Jonathan Mercandalli
Record with both cameras at once, with screens adapted for the Duo
App Store confirmed: The developer, in the App Store release notes for version 1.00.37, which say the screens were adapted for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
WHITE DIGIT LLC
Expenses, budgets and receipts in two columns that follow the Duo's fold
App Store confirmed: The developer, in the App Store description and the release notes for version 2.0: open, the Duo shows two columns, and half-folded, they follow the fold. The App Store seller is WHITE DIGIT L.L.C-FZ. Specific fold adaptations are not yet documented.
Otto Labs
A to-do list with quick entry, shared lists and repeating dates, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 1.8.0 (released October 9, 2026), which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Bijoy Thangaraj
A tuner, chord reference and metronome, adjusted for both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 2.2 (released October 9, 2026): the tuner adapts from the Duo's cover to the open display, with Duo refinements across the app. Specific fold adaptations are not yet documented.
Haruhiko Kishi
Children's music lessons, with a lesson picker that rearranges around the fold
App Store confirmed: The developer, in the App Store release notes for version 1.5.5 (released October 14, 2026): half-folded, the title, lesson picker and lesson list rearrange around the fold, and in landscape, closed or open, pages use two columns. Specific fold adaptations are not yet documented.
Sébastien Castiel
Habit scores and history beside the list on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 1.14 (released October 13, 2026): open, the Duo shows the Today view in two columns, and closed, the app keeps the familiar iPhone layout. The developer's Duo page on its website illustrates the two-column layout with an iPad, not the Duo. Specific fold adaptations are not yet documented.
Clocks, widgets and a bedside mode, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 6.0.0 (released October 12, 2026), which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
GREP ADVISORY PTE. LTD.
Market prices and liquidity, with the chart above its controls on the half-folded Duo
App Store confirmed: The developer, in the App Store release notes for version 4.3.15: open, the Duo shows a list beside the selected page, which stays in place as the phone opens; half-folded, a full-screen chart sits apart from its controls. Specific fold adaptations are not yet documented.
Alexander Pygin
A money tracker for transactions and budgets, with early Duo support
App Store confirmed: The developer, in the App Store release notes for version 2026.10.2 (released October 12, 2026), which add initial iPhone Duo support without describing the layout and say fuller optimization is still to come. Specific fold adaptations are not yet documented.
Alex Popa
An expense and budget tracker that spreads its cards across the open Duo
App Store confirmed: The developer, in the App Store release notes for version 2.0 (September 28, 2026): closed, Moondane keeps its familiar layout; open, its cards spread across the larger screen. The current version is 2.2, whose notes don't mention the Duo. Specific fold adaptations are not yet documented.
Flipping Hues Srls
A moon phase tracker with its time slider in the Duo's side controls
App Store confirmed: The developer, in the App Store release notes for version 2.10 (released October 12, 2026): layouts for each Duo pose and for side-by-side apps, with the time slider built into the side controls. Specific fold adaptations are not yet documented.
Saed Zakari
A remote terminal client that fits both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 1.4.1 (October 10, 2026): closed, screens fit the cover; open, they expand across the whole display. Specific fold adaptations are not yet documented.
Ryota Kobayashi (naipaka)
When the weather next turns sunny, shown beside the forecast, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 2.0.0 (released October 14, 2026), which add iPhone Duo support; the App Store description says the next sunny day sits beside the forecast. The store images in the app's code repository are simulator mockups with sample weather. Specific fold adaptations are not yet documented.
Overcast Radio, LLC
A podcast player with playlists, with interface improvements for the Duo
App Store confirmed: The developer, in the App Store release notes for version 2026.10, which list interface improvements for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
TINAC Inc.
A clipboard manager with boards beside your history on the open Duo
App Store confirmed: The developer, in the App Store description and the release notes for version 1.2.0 (released October 11, 2026): open, boards sit beside the clipboard history; closed, the buttons move to a side bar. The developer also says it works half-folded, without describing a separate layout. Specific fold adaptations are not yet documented.
Milad Fakhr
A PDF reader and editor that shows two facing pages on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 13.8 (released October 10, 2026): open, PDFs show as two facing pages, and the layout adapts as the phone folds or opens. The current version, 14.1, came out October 18, 2026, and says reading, the library and the subscription screen fit both the folded and unfolded display. Specific fold adaptations are not yet documented.
Rune Art ltd.
A video game diary with its tabs in the Duo's side strip
App Store confirmed: The developer, in the App Store release notes for version 1.0.7: on the Duo, the tab bar moves into the side strip. Specific fold adaptations are not yet documented.
Guan Feng Lai
A film-filter camera and photo editor, optimized for the Duo
App Store confirmed: The developer, in the App Store description and the release notes for version 1.0.11, which say "Optimized for iPhone Duo" without describing the layout. Version 1.0.13 only updates the store information. Specific fold adaptations are not yet documented.
Apantillo Labs LLC
Offline Texas Hold'em, with tournaments and poker career stats
App Store confirmed: The developer, in the App Store release notes for version 2.1 (released October 6, 2026), which add iPhone Duo compatibility, layout scaling and portrait and landscape refinements without describing a layout for the fold. Specific fold adaptations are not yet documented.
Pascal Peltriaux
Retro games with arcade buttons and a joystick on the Duo's flat half
App Store confirmed: The developer, in the App Store release notes for version 1.12: the Duo's flat half becomes an arcade-style control panel with buttons, a joystick and a directional pad. Specific fold adaptations are not yet documented.
Kevin Hall
A calendar and task app with the day's list beside its timeline on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 1.4.1 (released October 6, 2026): closed, a side rail; open, the day's list sits beside the timeline, with editors floating above it. Specific fold adaptations are not yet documented.
Manuel Sainsily
A timed gem-matching puzzle, with its window layout adjusted for the Duo
App Store confirmed: The developer, in the App Store description and the release notes for version 1.3.4 (released September 10, 2026), which say PopColor is ready for iPhone Duo: the game no longer assumes a fixed screen, and tips and effects fit the window. No pose is described. Specific fold adaptations are not yet documented.
Chien Yu Wang
Photo and video collages, with controls beside the canvas on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 1.10.07, refined in version 1.10.13 (released October 13, 2026): open, the controls can sit to the left or right of the canvas; closed, the layout is fixed for the shorter screen. Specific fold adaptations are not yet documented.
Noah William Saffer
Streams your Mac, with a trackpad and keys below the picture on the half-folded Duo
App Store confirmed: The developer, in the App Store release notes for version 0.5.1: layouts for the cover and the open display, where the Mac fills the screen; half-folded, the Mac picture sits above a trackpad and keys. Specific fold adaptations are not yet documented.
Dachverband Legasthenie Deutschland e.V.
Sliding puzzles with the board beside the solved list on the open Duo
App Store confirmed: The developer, in the App Store description for version 1.0 (released October 8, 2026): a game on the cover; open and turned upright, a full-screen board; open in landscape, controls and solved puzzles on the left and the board on the right. The App Store seller is American Dyslexia Association, Inc. Specific fold adaptations are not yet documented.
Pascal Peltriaux
A board above the dice and menus when the Duo is half-folded
App Store confirmed: The developer, in the App Store description and the release notes for version 1.9.2: half-folded on a table, the board stands upright with the dice and menus below; open, the game fills the screen; closed, the layout keeps clear of the camera. Specific fold adaptations are not yet documented.
Jonathan Clarke
Five solitaire games, optimized for the Duo
App Store confirmed: The developer, in the App Store release notes for version 1.23 (released October 9, 2026), which say it is optimized for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
耀 陈 / Massimo
Opens and creates archives, with layout fixes for the Duo and side-by-side apps
App Store confirmed: The developer, in the App Store release notes for version 1.5.3 (released September 21, 2026): layouts refined on both Duo displays and when sharing the screen with another app, with a fix for buttons disappearing when switching sides. The developer's website goes by Massimo. Specific fold adaptations are not yet documented.
Nicholas Davies
A baseball and softball lineup planner, with the roster beside the field on the Duo
App Store confirmed: The developer's in-app release notes for version 3.5, added to the app's code on October 14, 2026, say that on the Duo the roster sits beside the field and lineup tools. The App Store release notes for version 3.5 (released October 16, 2026) say "Support for iPhone Duo." Specific fold adaptations are not yet documented.
Kirill Vasilyev
A teleprompter beside the camera lens, with Duo support in version 1.7.0
App Store confirmed: The developer, in the App Store release notes for version 1.7.0 (released October 13, 2026), which add full iPhone Duo support without describing the layout. Later layout work in the app's source code may not be in that version yet. Specific fold adaptations are not yet documented.
Flipping Hues Srls
Sun tracking and planning, with a time slider in the Duo's side controls
App Store confirmed: The developer, in the App Store release notes for version 4.11.3 (released October 17, 2026): Sunlitt now supports iPhone Duo, with the interface adapting to its folded states and poses and the time slider built into the vertical bar. Widgets, Live Activities and StandBy are still being refined. Specific fold adaptations are not yet documented.
Paul Gessinger
A Paperless-ngx client with documents beside the list when open
App Store confirmed: Paul Gessinger, the developer, in merged GitHub pull request 813, with changes for the cover and the open display that were in prerelease 1.10.4 (226), published October 14, 2026. Version 1.10.4 reached the App Store on October 20, 2026, and its release notes say "This release adds basic support for iPhone Duo". Specific fold adaptations are not yet documented.
Still, live and depth-effect anime wallpapers, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 2.1.0 (September 25, 2026) and version 2.1.1 (October 11, 2026), which update the home page, categories, wallpaper details and avatar details for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
False Peak
A list and board app with your lists beside the active one on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 2.1.0 (released October 10, 2026): open, navigation sits beside the active list; closed, the controls move to the side. Specific fold adaptations are not yet documented.
Hangzhou Tangsuan Network Technology Co., Ltd.
Spin wheels, random numbers and coin flips, with refined Duo layouts
App Store confirmed: The developer, in the App Store release notes for version 26.11 (released October 14, 2026): the wheel, sidebars and toolbars are refined as the Duo's screen changes. Specific fold adaptations are not yet documented.
SkedGo Pty Ltd
A trip planner whose actions move into the Duo's side bar, leaving room for the route
App Store confirmed: The developer, SkedGo, in TripKit pull request 445 on GitHub, updated October 14, 2026 and merged October 19: nighthawk from SkedGo reports testing TripGo in the iPhone Duo simulator with favourite and share moved into the side bar. The App Store release notes for version 2026.5 (released October 19, 2026) say the interface is readied for iPhone Duo. Specific fold adaptations are not yet documented.
One4Studio
Recipes with the current step above the ingredients on the half-folded Duo
App Store confirmed: The developer, in the App Store description and the release notes for version 1.1.0 (released October 10, 2026): half-folded, the current cooking step sits on the raised half with the ingredients and controls below. The notes also describe ingredients beside the instructions and a wider weekly meal board. Specific fold adaptations are not yet documented.
Joshua Dessol Design / JOSHUA ORRY DESSOL
Home Assistant dashboards, with a card's controls opening on the other half on iPhone Duo
App Store confirmed: The App Store release notes for version 1.4 (released October 15, 2026) say it gets ready for iPhone Duo: hold it like a book or stand it in tabletop, and a card's controls open on the other half while the dashboard stays in view. Every detail has a layout for each pose, from a climate dial that rises as an arch to a lock that lies flat with a slide to unlock. Specific fold adaptations are not yet documented.
A handpan you play by touch, beside its sheet music on the open Duo
App Store confirmed: The developer, in the App Store release notes for version 1.2.3 (October 8, 2026): open, the handpan and the score sit side by side; closed, the instrument stays compact. Specific fold adaptations are not yet documented.
Naveen S Choudhary
An expense tracker and budget in rupees, updated for the Duo
App Store confirmed: The developer, in the App Store release notes for version 1.1.2, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Away Studio LLC
A record of hotel stays, nights away and spending, optimized for the Duo
App Store confirmed: The developer, in the App Store release notes for version 3.7.1, which say the app is optimized for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
SHIFENG ZHANG
A focus timer as a train journey, its screens changing as the phone folds
App Store confirmed: The developer, in the App Store release notes for version 1.2.1: the route, carriage, ticket, gate and arrival screens change as you open, half-fold or close the phone. The notes don't describe each layout. Specific fold adaptations are not yet documented.
Adam Foot
Try out the system's haptic feedback types, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 3.3: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Adam Foot
Quick buttons for HomeKit accessories and scenes, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 3.3: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
naoya saito
A hundred-cell arithmetic drill, with layouts improved for iPhone Duo
App Store confirmed: The developer, in the App Store release notes for version 3.3.0: improved layouts on iPhone, iPad and iPhone Duo. The notes don't describe the Duo layout. Specific fold adaptations are not yet documented.
Adam Rais
Quebec fuel prices and a next-day forecast, with the forecast button on the cover
App Store confirmed: The developer, in the App Store release notes for version 1.9.0: the Barometer's forecast button is now on the cover. The App Store description adds that, open, the station list sits beside the station's details. Specific fold adaptations are not yet documented.
Phanith Ny
A Khmer keyboard with word suggestions, now with iPhone Duo support
App Store confirmed: The developer, in the App Store release notes for version 3.2.0, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Evgeny Zhukov
A LiDAR 3D scanner that now scans on the Duo
App Store confirmed: The developer, in the release notes for version 2.4.2 (released October 11, 2026): "Scanning now works on iPhone Duo and on standard iPhones, not only Pro models." The App Store seller is Evgeny Zhukov (id 1642329012). There are no pictures of it on the Duo yet. Specific fold adaptations are not yet documented.
Adam Foot
A medical ID for first responders, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 6.3.1: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Adam Foot
A medical alert siren with your medical details, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 8.3: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Adam Foot
A medical ID on Apple Watch, its iPhone app adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 6.3.1: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Adam Foot
Medical ID widgets for the Home and Lock Screen, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 8.3: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Adam Foot
A full keyboard for Apple Watch, its iPhone app adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 1.2: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Xetabit, LLC
An RSS reader that keeps its unread count in the side rail
App Store confirmed: The developer, in the App Store release notes for version 2.5.0: the reader's toolbar changes when the phone is unfolded, and the unread count is drawn as a symbol so it fits in the vertical rail. Specific fold adaptations are not yet documented.
Adam Foot
Hides subscription pop-ups on Newsquest news sites, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 2.2: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Michal Kos
A single-page note app with a better layout on the Duo
App Store confirmed: The developer, in the App Store release notes for version 3.1.0, which promise a better layout on iPhone Duo without describing it. Specific fold adaptations are not yet documented.
Adam Foot
A random number between two values, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 5.2: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Adam Foot
A T9 keyboard for Apple Watch, its iPhone app adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 5.3.1: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Edovia
Control your Mac or PC remotely over VNC, now with iPhone Duo support
App Store confirmed: The developer, in the App Store release notes for version 5.9.3, which add iPhone Duo support without describing a layout. Specific fold adaptations are not yet documented.
Adam Foot
A preview of Apple's typography, colours and sizes, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 3.1.1: content and toolbars are adjusted for the inner and outer displays, and the screenshot sizes now include iPhone Duo. Specific fold adaptations are not yet documented.
AMEDYA LTD.
AI characters to text or call, now with Duo support
App Store confirmed: The developer, in the App Store release notes for version 2.0.0, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Adam Foot
Switch App Store countries to check rankings, adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 3.3.2: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Adam Foot
A swipe keyboard for Apple Watch, its iPhone app adapted to both Duo displays
App Store confirmed: The developer, in the App Store release notes for version 7.3.1: content and toolbars are adjusted for the inner and outer displays. The notes don't say how. Specific fold adaptations are not yet documented.
Matthew Murphy
A binary logic puzzle like sudoku, now with split-screen and Duo support
App Store confirmed: The developer, in the App Store release notes for version 1.42, which add split-screen and iPhone Duo support without describing the Duo layout. Specific fold adaptations are not yet documented.
6X Studio LLC
Record with the front and back cameras at once, ready for the Duo
App Store confirmed: The developer, in the release notes for version 1.5.4 (released September 28, 2026), whose "Recent Updates" list includes "New: Ready for iPhone Duo and wider screens", and for version 1.5.5 (released October 19, 2026), which say the iPhone Duo features let you show custom photos and videos on the outer screen and move the teleprompter between screens, with better foldable layouts; the App Store description lists the iPhone Duo among compatible models. There are no pictures of it on the Duo yet. The App Store seller is 6X Studio LLC (id 1584095090). Specific fold adaptations are not yet documented.
Kazuhiro Yoshimitsu
An offline AI chat app that keeps its answer going when you fold or unfold
App Store confirmed: The developer, in the Japanese release notes for version 1.0.17 (released October 11, 2026), which say it supports iPhone Duo: closed or open, the buttons rearrange to fit the screen's orientation, and an answer being written and your scroll position carry on when you open or close the phone. KY Studio, the developer's account on X, announced it on October 11, 2026, saying the display switches to fit the screen whether the phone is open or closed (@kystudio_jp on X). The app is on the Japanese App Store, not the US one. There are no pictures of it on the Duo yet. The App Store seller is Kazuhiro Yoshimitsu (id 6756705802). Specific fold adaptations are not yet documented.
Kentaro Matsumae
A flip-book animation maker with layouts for the Duo open, closed and half-open
App Store confirmed: The developer, in the release notes for version 20261011 (released October 10, 2026): "Now supports iPhone Duo. The layout adapts whether it's open, closed, or half-open," and on iPad in full screen and on iPhone Duo "the frame list can now appear next to the canvas in landscape." Kentaro Matsumae posted the Japanese notes on X on October 11, 2026, saying the Duo version shipped without ever being checked on a real device (@kenmaz on X). There are no pictures of it on the Duo yet. The App Store seller is Kentaro Matsumae (id 405622194). Specific fold adaptations are not yet documented.
Daniel Plata
A virtual fish tank for your Home Screen, with layouts that adapt as the Duo unfolds
App Store confirmed: The developer, in the release notes for version 1.8.0 (released October 11, 2026): "Enjoy layouts designed for iPhone Duo that adapt as you unfold your device, keeping your aquariums and edits right where you left them," with "a Settings screen that fills the unfolded display." There are no pictures of it on the Duo yet. The App Store seller is Daniel Plata (id 6755478347). Specific fold adaptations are not yet documented.
Calligo IT Pty Ltd
Australian weather with the same side controls on the closed cover and open
App Store confirmed: The developer, in the release notes for version 2.0.2 (released October 10, 2026): "Duo side controls match on the closed cover and the open book. Forecast highs and lows sit in two equal columns." There are no pictures of it on the Duo yet. The App Store seller is Calligo IT Pty Ltd (id 6770294727). Specific fold adaptations are not yet documented.
Emanuele Agosta
Track films and shows, with layouts adapted to the Duo's screens and vertical bar
App Store confirmed: The developer, in the release notes for version 2.3 (released October 10, 2026): on iPhone Duo "the design beautifully adapts to all screen sizes and folded states," posters and images on the media details screen are made for "the new dual displays," and the layouts are adjusted for "the vertical bars design." There are no pictures of it on the Duo yet. The App Store seller is Emanuele Agosta (id 6751709573). Specific fold adaptations are not yet documented.
Kole Hoenicke
Personal bulk texts: the phone layout closed, templates beside their details open
App Store confirmed: The developer, in the release notes for version 26.10.8 (released October 10, 2026): "Blast 26.10.8 introduces support for iPhone Duo. Use the familiar iPhone layout on the outer screen, then unfold to browse templates and groups beside their details on the expanded inner display." There are no pictures of it on the Duo yet. The App Store seller is Kole Hoenicke (id 6760002675). Specific fold adaptations are not yet documented.
Fabian Grill
A reading diary with the cover and details either side of the fold, the timer above it
App Store confirmed: The developer, in the release notes for version 1.6 (released October 7, 2026): "Ready for iPhone Duo – BookSafe uses both the outer and the inner display. Unfolded, tiles line up with the fold, in landscape the cover sits left of the fold and the details to the right, and in tabletop mode cover and reading time sit above the fold with the controls below." The description says the same. There are no pictures of it on the Duo yet. The App Store seller is Fabian Grill (id 6779730178). Specific fold adaptations are not yet documented.
Mert Emek
Untimed jigsaws with the board on one half of the open Duo and the pieces on the other
App Store confirmed: The developer, in the release notes for version 1.1.9 (released October 4, 2026): "Calm Jigsaw is also optimized for the foldable iPhone Duo: on the wide inner display, the board and your piece tray sit on separate halves of the screen for a spacious, tidy view. The compact outer display and iPad stay just as you know them." There are no pictures of it on the Duo yet. The App Store seller is MERT EMEK (id 6760758340). Specific fold adaptations are not yet documented.
Thom Rehwaldt
Ambience and sound effects for tabletop game masters, updated for the Duo
App Store confirmed: The developer, in the release notes for version 2.1 (released October 9, 2026): "Support for iPhone Duo!" The notes say nothing more about it. There are no pictures of it on the Duo yet. The App Store seller is Thom Rehwaldt (id 6759292739). Specific fold adaptations are not yet documented.
Kurt Klein
Tap to time your commute; open, the week sits in its own panel beside your cards
App Store confirmed: The developer, in the release notes for version 1.1 (released October 10, 2026): "iPad and iPhone Duo. On a larger screen the week sits in its own panel beside your cards, and a running trip stays beside the month it belongs to. History shows every week on one side and its legs on the other." The description says the same of the Duo's inner display. There are no pictures of it on the Duo yet; the App Store's wide screenshots are of an iPad. The App Store seller is KSQ Studios LLC (id 6805281897). Specific fold adaptations are not yet documented.
FixPixel SRL
Ten neon mini-games played with the Watch's crown, refitting as the Duo opens
App Store confirmed: The developer, in the App Store description, under "IPHONE DUO READY": "Built to resize live for iPhone Duo: the layout re-fits itself when you open or close the phone, on the outer and the inner display." The release notes for version 1.0 (released October 2, 2026) don't mention the Duo. There are no pictures of it on the Duo yet. The App Store seller is FixPixel SRL (id 6815818669). Specific fold adaptations are not yet documented.
Asharaf Ali
True-black wallpapers cut separately for the Duo's cover and its inner screen
App Store confirmed: The developer, in the release notes for version 1.1.0 (released September 24, 2026): "Built for iPhone Duo." Wallpapers are cut separately for the Duo's cover and inner screen, with a preview of how each sits on either screen and "layouts that adapt across the fold, including the cover screen's reserved status-bar band." There are no pictures of it on the Duo yet. The App Store seller is Asharaf Ali (id 6763156135). Specific fold adaptations are not yet documented.
SkyPaw Co., Limited
A calibrated sound level meter with full Duo support
App Store confirmed: The developer, in the release notes for version 9.9.8 (released October 11, 2026): "Full support for the iPhone Duo". There are no pictures of it on the Duo yet. The App Store seller is SkyPaw Co., Limited (id 448155923). Specific fold adaptations are not yet documented.
Ahmet Giray Ucar
Wallpapers built around the camera, with a set drawn for the Duo's cover
App Store confirmed: The developer, in the release notes for version 4.0.1 (released October 9, 2026): "A new experience for iPhone Duo," with an app "rebuilt for iPhone Duo, with new screens and layouts designed for both its outer and inner displays," and a new collection of wallpapers "made for the iPhone Duo outer display, with designs that blend naturally with the camera area." There are no pictures of it on the Duo yet. The App Store seller is Ahmet Giray Ucar (id 6447182008). Specific fold adaptations are not yet documented.
Gustavo Matias Anschau
An English-learning app of articles, grammar and vocabulary, adjusted for the Duo
App Store confirmed: The developer, in the release notes for version 1.0.10 (released October 3, 2026): "Bug fixes, performance improvements, and layout adjustments for iPhone Duo." There are no pictures of it on the Duo yet. The App Store seller is Gustavo Matias Anschau (id 6780874009). Specific fold adaptations are not yet documented.
Thomas Kahle
Counts the days you and your family have lived, now ready for the Duo
App Store confirmed: The developer, Thomas Kahle, in the German release notes for version 1.4.1 (released October 10, 2026): "1.4.1 macht Erdentage bereit für das iPhone Duo und iOS 27" (makes Erdentage ready for iPhone Duo and iOS 27); and on Mastodon on October 11, 2026, saying the release fixes the display, especially on the iPhone Duo, and asking anyone who gets one how the app works on it (mathe.social). There are no pictures of it on the Duo yet. The App Store seller is Thomas Kahle (id 6770075035). Specific fold adaptations are not yet documented.
BK Go CO., LTD.
Live sports scores closed, match details beside fan comments open
App Store confirmed: The developer, in the Korean release notes for version 1.1.4 (released October 10, 2026), which say the screen layout is improved to fit the iPhone Duo's folded and unfolded screens; the description adds that folded you can check live scores at a glance, and unfolded the match information and fans' cheering posts sit side by side. There are no pictures of it on the Duo yet. The App Store seller is BK Go CO., LTD. (id 6741846743). Specific fold adaptations are not yet documented.
Ahmet Sadık Gulden
A fake incoming call to get you out; half open, the Duo becomes a desk clock
App Store confirmed: The developer, in the release notes for version 27.3 (released October 10, 2026): "A new layout for iPhone Duo puts your caller and call controls on separate halves. Half open, Duo becomes a desk clock with the call button close at hand." The description says the same. There are no pictures of it on the Duo yet. The App Store seller is Ahmet Sadık GULDEN (id 6763378665). Specific fold adaptations are not yet documented.
FITAPP GmbH
A GPS running and weight diary, optimized for the Duo
App Store confirmed: The developer, in the release notes for version 9.9.4 (released October 9, 2026): "Optimized for iPhone Duo". The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is FITAPP GmbH (id 1015819468). Specific fold adaptations are not yet documented.
NOH HIYEONG
Wallpapers with one scene for the cover and a surprise behind it when you open
App Store confirmed: The developer, in the App Store description, which says FoldTales was "Created first for iPhone Duo": each theme pairs a cover scene with a second scene revealed inside. It notes that "iOS uses one Lock Screen wallpaper and one Home Screen wallpaper across Duo," so the reveal is an in-app preview and saved wallpapers are still images. Version 1.0 (released October 9, 2026) has no release notes about the Duo. The App Store screenshots show the paired cover and inside artwork, not the app on a Duo. The App Store seller is NOH HIYEONG (id 6814663847). Specific fold adaptations are not yet documented.
Zubin Ghai
Photograph a menu and see the best picks for your diet, updated for the Duo
App Store confirmed: The developer, in the release notes for version 3.2 (released October 10, 2026): "Updated and Ready for your new iPhone Duo!" The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is Zubin Ghai (id 6736621740). Specific fold adaptations are not yet documented.
Jorn Wellniak
A cash-flow forecast you can keep beside the overview screens on the open Duo
App Store confirmed: The developer, in the release notes for version 2.2 (released October 10, 2026): "Full support for iPhone Duo: When unfolded in landscape, you can use Freeboard across the entire screen or view Forecast and the overview screens side by side in split screen." There are no pictures of it on the Duo yet. The App Store seller is Jorn Wellniak (id 6805991391). Specific fold adaptations are not yet documented.
波 高
Launch radish knives to slice flying fruit, made to play on large screens
App Store confirmed: The developer, in the App Store description: "Optimized for large screens — plays beautifully on iPhone Duo, iPad, and all iPhone models." The release notes for version 1.1 (released September 24, 2026) don't mention the Duo, and nothing says what changes on it. There are no pictures of it on the Duo yet. The App Store seller is 波 高 (id 6812713378). Specific fold adaptations are not yet documented.
Yu-Wei Chuang
A food diary whose layout and navigation follow the Duo as it folds and unfolds
App Store confirmed: The developer, in the release notes for version 2.16.0 (released October 10, 2026): "Added support for iPhone Duo, with layouts and navigation that adapt as you fold and unfold your device." There are no pictures of it on the Duo yet. The App Store seller is YU-WEI CHUANG (id 426906889). Specific fold adaptations are not yet documented.
Thye Chean Lim
Space Invaders meets Galaxian on iPhone and Apple Watch, updated for the Duo
App Store confirmed: The developer, in the release notes for version 6.6 (released October 8, 2026): "Updated for iPhone Duo." The notes say nothing more. There are no pictures of it on the Duo yet. The same developer's Space War GS is already listed. The App Store seller is Thye Chean Lim (id 1153954222). Specific fold adaptations are not yet documented.
tadashi atoji
A quick handwritten memo app, now supporting the Duo
App Store confirmed: The developer, in the release notes for version 2.0.1 (released October 10, 2026): "Added support for iPhone Duo." The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is tadashi atoji (id 1097329961). Specific fold adaptations are not yet documented.
书培 王
Turns photos and scans into PDFs, updated for the Duo
App Store confirmed: The developer, in the release notes for version 2.1.5 (released October 10, 2026), which start with "Added support for iPhone Duo." The notes say nothing more about the Duo. There are no pictures of it on the Duo yet. The App Store seller is 书培 王 (id 6741581868). Specific fold adaptations are not yet documented.
NOH HIYEONG
A shared island pet for two partners, with layouts adapted to the Duo
App Store confirmed: The developer, in the release notes for version 1.5.0 (released October 10, 2026): "Layouts now adapt to iPhone Duo and changing window sizes." The description says the same. There are no pictures of it on the Duo yet. The App Store seller is NOH HIYEONG (id 6761184037). Specific fold adaptations are not yet documented.
KEYUP SRL
The iPhoneSoft.fr Apple news app, ready for the Duo
App Store confirmed: The developer, in the release notes for version 9.5.2 (released October 9, 2026): "iSoft is ready for the iPhone Duo!" The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is KEYUP SRL (id 705165892). Specific fold adaptations are not yet documented.
forYou inc.
A retro LCD desk clock and calendar, with two months side by side when open
App Store confirmed: The developer, in the release notes for version 26.6 (released October 10, 2026): "Added support for iPhone Duo. The clock and calendar are laid out to fit both the closed and the open screen, and the open screen shows two months side by side." The description says the same. There are no pictures of it on the Duo yet. The App Store seller is forYou inc. (id 295737235). Specific fold adaptations are not yet documented.
A simple to-do list and planner, now supporting the Duo
App Store confirmed: The developer, in the release notes for version 1.2.7 (released October 11, 2026), as in 1.2.6 before it: "Support for iOS 27 and iPhone Duo". The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is 金霖 黄 (id 6451389254). Specific fold adaptations are not yet documented.
Jin Jung
A player for music you own: Now Playing beside the library open, one column closed
App Store confirmed: The developer, in the release notes for version 2.1 (released October 10, 2026), "Built for iPhone Duo": "On iPhone Duo, Now Playing now lives in its own pane beside your library: artwork, lyrics and the equalizer stay on screen while you browse. Fold it and you're back to the single-column player, with no rotation jump between the two." The description says the same. There are no pictures of it on the Duo yet. The App Store seller is Jin Jung (id 6775971488). Specific fold adaptations are not yet documented.
Dimitri Giani
Automatic mileage tracking, with the dashboard, trips and map side by side open
App Store confirmed: The developer, in the release notes for version 7.1 (released October 10, 2026): "Ready for iPhone Duo: unfolded, Magica uses the whole inner display, with the dashboard, your trips and their summary, refuels and the map, services and statistics side by side. Folded, navigation moves to the vertical bar and nothing ends up underneath it." There are no pictures of it on the Duo yet. The App Store seller is Dimitri Giani (id 1341304115). Specific fold adaptations are not yet documented.
A Markdown reader that opens as a two-page book, with the hinge as its spine
App Store confirmed: The developer, in the release notes for version 1.1.0 (released October 10, 2026), "Made for iPhone Duo": a two-page spread on the open screen, a side rail on the cover, and a reading stand when half open. There are no pictures of it on the Duo yet. The App Store seller is 佳奇 袁 (id 6803164224). Specific fold adaptations are not yet documented.
Phillip Paul
A metronome and tuner: one-hand layout closed, a two-column practice stage open
App Store confirmed: The developer, in the release notes for version 1.8.0 (released October 8, 2026): made for iPhone Duo, adapting to the folded and unfolded display in portrait and landscape, with a two-column layout unfolded. There are no pictures of it on the Duo yet. The App Store seller is Phillip Paul (id 6775570055). Specific fold adaptations are not yet documented.
forYou inc.
A vertical calendar that splits calendar and events along the fold, half-folded
App Store confirmed: The developer, in the release notes for version 2.0 (released October 10, 2026), which list iPhone Duo support: buttons in a column on the right of the outer display, the calendar and event list side by side when unfolded, and split along the fold when half-folded. There are no pictures of it on the Duo yet. The App Store seller is forYou inc. (id 6739420415). Specific fold adaptations are not yet documented.
jang sehoon
A hand-drawn to-do calendar with calendar and tasks side by side when open
App Store confirmed: The developer, in the release notes for version 1.79 (released October 10, 2026), which say that on iPhone Duo the app uses the full unfolded display, with the calendar and tasks side by side, and returns to one column when folded. There are no pictures of it on the Duo yet. The App Store seller is jang sehoon (id 480677477). Specific fold adaptations are not yet documented.
Thye Chean Lim
A falling-block puzzle for iPhone, iPad and Apple Watch, now on the Duo
App Store confirmed: The developer, in the release notes for version 2.2 (released October 7, 2026): "Supports iPhone Duo." The description says: "Now on iPhone Duo!" There are no pictures of it on the Duo yet. The App Store seller is Thye Chean Lim (id 6760651186). Specific fold adaptations are not yet documented.
伟 邓
A quick, minimal expense log, updated for the Duo
App Store confirmed: The developer, in the release notes for version 3.21 (released October 10, 2026): "Adapt iPhone Duo". The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is 伟 邓 (id 1176787145). Specific fold adaptations are not yet documented.
LuYang Li
A snore recorder that sets tonight beside the moon and each night beside its report
App Store confirmed: The developer, in the release notes for version 3.1.1 (released October 10, 2026): "Built for iPhone Duo. Unfold for side-by-side layouts." There are no pictures of it on the Duo yet. The App Store seller is LuYang Li (id 6759551011). Specific fold adaptations are not yet documented.
Goodwhale
A sugar tracker with an ape: two pages half-folded, a bedside clock stood as a tent
App Store confirmed: The developer, in the release notes for version 2027.2 (released October 8, 2026): every screen folds with the phone on iPhone Duo, two pages side by side in book posture, an iPad-like layout fully open, and the Bedside Clock opens by itself when stood like a tent. There are no pictures of it on the Duo yet. The App Store seller is Goodwhale (id 6443696989). Specific fold adaptations are not yet documented.
Four Corners Development Group
An RSS reader with no algorithm, now supporting the Duo
App Store confirmed: The developer, in the release notes for version 1.7.1 (released October 10, 2026): "iPhone Duo support". The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is Four Corners Development Group (id 6758412540). Specific fold adaptations are not yet documented.
Flooben Ltd
Find forgotten subscriptions, with full-screen calendar and lists on the open Duo
App Store confirmed: The developer, in the release notes for version 1.3 (released October 7, 2026): Orbit is ready for iPhone Duo, with full-screen calendar and subscription views. There are no pictures of it on the Duo yet. The App Store seller is Flooben Ltd (id 6692620188). Specific fold adaptations are not yet documented.
Maxime Pontoire
Five in a row on a board whose quarters twist, now on the Duo's wide screen
App Store confirmed: The developer, in the release notes for version 1.4.0 (released October 10, 2026): "You can now enjoy Pentago on the wide screen of the iPhone Duo." There are no pictures of it on the Duo yet. The App Store seller is Maxime Pontoire (id 6756574305). Specific fold adaptations are not yet documented.
Arthur Chang
A photo and video editor optimised for the Duo, editing split or full screen
App Store confirmed: The developer, in the release notes for version 7.1.0 (released October 10, 2026), which say Priime is fully optimised for iPhone Duo on the outer and the open inner display in every orientation, with split-screen or full-screen editing. There are no pictures of it on the Duo yet. The App Store seller is ARTHUR CHANG (id 934587545). Specific fold adaptations are not yet documented.
Kerem Erkan
A QR code and barcode scanner and maker, updated for the Duo
App Store confirmed: The developer, in the release notes for version 2026.17 (released October 9, 2026): "iPhone Duo support". The same update went out for Qrafter Pro (apps.apple.com). There are no pictures of it on the Duo yet. The App Store seller is AKE Software GmbH (id 416098700). Specific fold adaptations are not yet documented.
Matt Birchler
Voice notes you tap to record and get transcribed, now supporting the Duo
App Store confirmed: The developer, Matt Birchler, in the release notes for version 3.1 (released October 10, 2026): "Support for the iPhone Duo", and on the Birchtree blog on October 11, 2026 (birchtree.me). There are no pictures of it on the Duo yet. The App Store seller is Matt Birchler (id 6754181571). Specific fold adaptations are not yet documented.
Matt Birchler
A read-it-later app for saved articles and newsletters, now supporting the Duo
App Store confirmed: The developer, Matt Birchler, in the release notes for version 1.1 (released October 10, 2026): "iPhone Duo support", and on the Birchtree blog on October 11, 2026 (birchtree.me). There are no pictures of it on the Duo yet. The App Store seller is Matt Birchler (id 6759210587). Specific fold adaptations are not yet documented.
Berk Demir
A gambling-free streak garden that spreads over two pages when the Duo is half-folded
App Store confirmed: The developer, in the release notes for version 2.1.1 (released October 7, 2026): ready for iPhone Duo; in book posture the app spreads over two pages, garden on one side and your day on the other, and in tabletop posture home and breathing split at the fold. There are no pictures of it on the Duo yet. The App Store seller is Berk Demir (id 6746962708). Specific fold adaptations are not yet documented.
Karmjit Singh
A receipt scanner and expense tracker, redesigned and ready for the Duo folded or open
App Store confirmed: The developer, in the release notes for version 7.2.4 (released October 11, 2026): "Redesigned from top to bottom. Ready for iPhone Duo, folded or open." There are no pictures of it on the Duo yet. The App Store seller is Karmjit Singh (id 1532569828). Specific fold adaptations are not yet documented.
MSW Digital LLC
Move, Exercise and Step rings from Apple Health, fitted to every Duo pose
App Store confirmed: The developer, in the release notes for version 4.2.2 (released October 10, 2026): Rings+ now fits every way you hold iPhone Duo, closed, open flat, partly open or standing on a table. There are no pictures of it on the Duo yet. The App Store seller is MSW Digital LLC (id 6748885169). Specific fold adaptations are not yet documented.
Tue Nguyen Minh
A ruler, tape measure and camera ruler, now supporting the Duo
App Store confirmed: The developer, in the release notes for version 3.8.6 (released September 28, 2026): "Added support for iPhone Duo." The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is Tue Nguyen Minh (id 623207505). Specific fold adaptations are not yet documented.
阳 张
Reads TXT, EPUB and Markdown books aloud, with screens that adapt to both displays
App Store confirmed: The developer, in the release notes for version 5.0.0 (released October 10, 2026): "Designed for iPhone Duo: reading, listening, search, and editing adapt to both displays." On the Chinese App Store the app is called 香蕉听书. There are no pictures of it on the Duo yet. The App Store seller is 阳 张 (id 6756316775). Specific fold adaptations are not yet documented.
Rocco Barletta
Bills and daily spending, with sections in a sidebar when the Duo is open
App Store confirmed: The developer, in the release notes for version 3.6 (released October 10, 2026): ready for iPhone Duo, using the whole screen open with sections in a sidebar, and working as before closed. There are no pictures of it on the Duo yet. The App Store seller is ROCCO BARLETTA (id 6806970079). Specific fold adaptations are not yet documented.
Herman Haidin
Quick Markdown notes saved as plain files in real folders, ready for the Duo
App Store confirmed: The developer, in the App Store description of version 1.2.1 (released September 21, 2026): "Calm, minimal, and ready for iPhone Duo." The release notes don't mention the Duo. There are no pictures of it on the Duo yet. The App Store seller is Herman Haidin (id 6794625760). Specific fold adaptations are not yet documented.
Redeye Game
A 3D physics puzzle about knocking stacks down, optimized for the Duo
App Store confirmed: The developer, in the release notes for version 1.1.1 (released October 8, 2026): "Optimized for iPhone Duo." There are no pictures of it on the Duo yet. The App Store seller is Shenzhen Redeye Information Technology Co., Ltd (id 6785475224). Specific fold adaptations are not yet documented.
SANWA Inc.
A planner that opens like an A6 diary: your week on the left, handwriting on the right
App Store confirmed: The developer, in the App Store description of version 1.0 (released October 8, 2026), its first release, which has no release notes: open, the week sits on the left page and handwritten notes on the right like an A6 planner; half open, the fold becomes the spine; closed, just today's page. There are no pictures of it on the Duo yet. The App Store seller is SANWA Inc. (id 6816799383). Specific fold adaptations are not yet documented.
Kazuhiro Aonuma
Notes you pin to the Home Screen as widgets, with a new layout for the Duo
App Store confirmed: The developer, in the release notes for version 2.6.0 (released October 10, 2026): "Added a UI for iPhone Duo." There are no pictures of it on the Duo yet. The App Store seller is kazuhiro aonuma (id 1534900919). Specific fold adaptations are not yet documented.
Abdelrahman Hassan
A colour-hunting camera game, updated for the Duo
App Store confirmed: The developer, in the release notes for version 2.3.3 (released October 10, 2026): "This update includes support for the new iPhone Duo!" There are no pictures of it on the Duo yet. The App Store seller is Abdelrahman Hassan (id 6787918749). Specific fold adaptations are not yet documented.
Alexander Clauss
A widget for storage, memory and battery, now supporting the Duo
App Store confirmed: The developer, in the release notes for version 1.8 (released October 7, 2026): "Support for the new iPhone Duo added". The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is Alexander Clauss (id 974744046). Specific fold adaptations are not yet documented.
Anh Nguyen
An ADHD day planner whose week splits four days and three around the fold
App Store confirmed: The developer, in the release notes for version 2.1.0 (released October 11, 2026), which say it is ready for iPhone Duo: closed, it fits the outer display with its buttons in a column at the side; held open like a book, the week splits four days and three and the Focus timer sits on one side with its controls on the other. There are no pictures of it on the Duo yet. The App Store seller is Anh Nguyen (id 6751440902). Specific fold adaptations are not yet documented.
Abdelrahman Ashraf
A gravity block puzzle that keeps every drag off the fold in each Duo pose
App Store confirmed: The developer, in the release notes for version 1.1 (released October 6, 2026): on iPhone Duo the board takes one side of the fold and the score and pieces the other, everything you touch moves to the bottom half when stood like a laptop, and closed the game fills the cover. There are no pictures of it on the Duo yet. The App Store seller is Abdelrahman Ashraf (id 6810856219). Specific fold adaptations are not yet documented.
Tue Nguyen Minh
Convert units and 148 currencies, now supporting the Duo
App Store confirmed: The developer, in the release notes for version 2.1.3 (released October 9, 2026): "Added support for iPhone Duo." The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is Tue Nguyen Minh (id 1139120257). Specific fold adaptations are not yet documented.
V Pugazhenthi
Sixty categories of unit converters, side by side on the open Duo
App Store confirmed: The developer, in the release notes for version 6.2 (released October 8, 2026): now compatible with iPhone Duo, with a side-by-side layout on the inner display. There are no pictures of it on the Duo yet. The App Store seller is V PUGAZHENTHI (id 531049678). Specific fold adaptations are not yet documented.
Milad Fakhr
A voice recorder whose recording, playback and library adapt as the Duo folds
App Store confirmed: The App Store release notes for version 17 (released October 18, 2026) say it is ready for iPhone Duo: recording, playback and the subscription screen are tuned for the folding display, open or folded. The description lists iPhone Duo among the devices it is designed for. There are no pictures of it on the Duo yet. The App Store seller is Milad Fakhr (id 609030412). Specific fold adaptations are not yet documented.
Yanli Wang
Vocabulary flashcards that stay off the crease and split around it half-folded
App Store confirmed: The developer, in the Chinese release notes for version 2.1.0 (released October 10, 2026), which say it supports iPhone Duo open or closed, keeps cards and buttons off the crease, and when half-folded shows the study content and the buttons on either side of the crease. There are no pictures of it on the Duo yet. The App Store seller is Yanli Wang (id 6787317959). Specific fold adaptations are not yet documented.
Jeremie Berduck
A Grand Sumo companion for the basho schedule, rankings and replays, updated for the Duo
App Store confirmed: The developer, in the release notes for version 2.6.3 (released October 11, 2026): "Yorikiri now has a layout built for iPhone Duo", and in a post on Bluesky on October 11, 2026, saying the update is live (bsky.app). There are no pictures of it on the Duo yet. The App Store seller is Jeremie Berduck (id 6443876283). Specific fold adaptations are not yet documented.
Kankoda Sweden AB
Number games for young children, which the developer says are ready for iPhone Duo
App Store confirmed: The developer, Daniel Saidi, in a post on X on October 10, 2026 saying the Appamini games are updated for iPhone Duo and ready for the October 23 launch (@danielsaidi on X). The post's pictures show an Appamini home scene on the closed cover and the open inner display. The App Store seller is Kankoda Sweden AB (id 944820281). The release notes for version 4.3 (released October 20, 2026) say "This version prepares the app for the iPhone Duo." The description does not mention the Duo. Specific fold adaptations are not yet documented.
Kankoda Sweden AB
Alphabet games for young children, which the developer says are ready for iPhone Duo
App Store confirmed: The developer, Daniel Saidi, in a post on X on October 10, 2026 saying the Appamini games are updated for iPhone Duo and ready for the October 23 launch (@danielsaidi on X). The post's pictures show an Appamini home scene on the closed cover and the open inner display. The App Store seller is Kankoda Sweden AB (id 581402736). The release notes for version 4.3 (released October 20, 2026) say "This version prepares the app for the iPhone Duo." The description does not mention the Duo. Specific fold adaptations are not yet documented.
Masami Yamate
A care diary for pet birds, with the list and a bird's records side by side open
App Store confirmed: The developer, posting as aikawa on X on October 10, 2026, announcing version 4.0.0 with iPhone Duo and iPad support (@aikawa_Japan on X). The release notes for 4.0.0 (released October 10, 2026) say it is now on iPad and iPhone Duo, with the list and details side by side on larger screens. The post's pictures show only an ordinary iPhone. Specific fold adaptations are not yet documented.
Jake Burns
Your Foursquare check-in history as stats and journals, updated for the Duo
App Store confirmed: The developer, in the release notes for version 1.2 (released October 10, 2026), which start with "iPhone Duo Support". There are no pictures of the app on the Duo, and the notes don't describe the layout. The App Store seller is Jake Burns (Cube Quack). Specific fold adaptations are not yet documented.
Nuno Coelho Santos
A type-and-see currency converter with its own layout for the Duo
App Store confirmed: The developer, in the release notes for version 2.11 (released October 1, 2026), which list "Support for iPhone Duo" with iPad and landscape support, and in the App Store description, which lists "Landscape, iPad, and iPhone Duo layouts". There are no pictures of the app on the Duo. The App Store seller is Nuno Coelho Santos. Specific fold adaptations are not yet documented.
Kankoda Sweden AB
An emoji picker for use beside other apps, ready for iPhone Duo, says its developer
App Store confirmed: Daniel Saidi of Kankoda, in a post on X on October 10, 2026: "all my apps are now ready for the October 23 launch" (@danielsaidi on X). The App Store release notes for version 2.1.0 (released October 9, 2026): "This version prepares Emoji Picker for the iPhone Duo." The seller is Kankoda Sweden AB (id 6472487442). There are no pictures of it on the Duo yet. Specific fold adaptations are not yet documented.
Peter Vogels
A HomeKit dashboard whose iPhone Duo update adds a Favorites sidebar you can arrange
App Store confirmed: The App Store release notes for version 1.17 (released October 6, 2026): "Added support for iPhone Duo, including a customizable Favorites sidebar." Specific fold adaptations are not yet documented.
Digital Hole Pvt. Ltd.
A gratitude journal that sorts daily notes into jars, now with an iPhone Duo update
App Store confirmed: The developer, Digital Hole, in a post on X on October 9, 2026 saying the iPhone Duo update is on the App Store (@DigitalHoleCorp on X). The release notes for version 2.0 (released October 9, 2026) say "Added iPhone Duo support". Specific fold adaptations are not yet documented.
Henrik Johansson
Pin where the mushrooms or the fish were, with the map above and the list below half-open
App Store confirmed: The developer, posting as Henke J on Bluesky on October 10, 2026 (bsky.app), and in the release notes for version 1.3 (released October 9, 2026). The post has no pictures of the app on the Duo. The App Store seller is Henrik Johansson. Specific fold adaptations are not yet documented.
Kankoda Sweden AB
A keyboard of saved text snippets, which its developer says is ready for iPhone Duo
App Store confirmed: Daniel Saidi of Kankoda, in a post on X on October 10, 2026: "all my apps are now ready for the October 23 launch" (@danielsaidi on X). The App Store release notes for version 2.3.0 (released October 10, 2026): "This version prepares One Touch Paste for the iPhone Duo." The seller is Kankoda Sweden AB (id 6478205851). There are no pictures of it on the Duo yet. Specific fold adaptations are not yet documented.
Phanith Ny
A bookmark library whose layouts were reworked for the Duo's sizes and turns
App Store confirmed: The developer, in the release notes for version 3.2.0 (released October 10, 2026), which start with "Support iPhone Duo" and improved bookmark layouts for different screen sizes and rotation. There are no pictures of the app on the Duo; the App Store screenshots show an ordinary iPhone. The App Store seller is Phanith Ny. Specific fold adaptations are not yet documented.
Kankoda Sweden AB
Sweden's record shops on a map, which its developer says is ready for iPhone Duo
App Store confirmed: Daniel Saidi of Kankoda, in a post on X on October 10, 2026: "all my apps are now ready for the October 23 launch" (@danielsaidi on X). The App Store release notes for version 4.1 (released October 10, 2026): "Den här versionen lägger till stöd för iPhone Duo." (Swedish for "This version adds support for iPhone Duo.") The seller is Kankoda Sweden AB (id 640253601). There are no pictures of it on the Duo yet. Specific fold adaptations are not yet documented.
Kankoda Sweden AB
A wallet for cards, IDs and tickets, which its developer says is ready for iPhone Duo
App Store confirmed: Daniel Saidi of Kankoda, in a post on X on October 10, 2026: "all my apps are now ready for the October 23 launch" (@danielsaidi on X). The App Store release notes for version 7.1 (released October 9, 2026): "This version prepares the app for the iPhone Duo." The seller is Kankoda Sweden AB (id 516398915). There are no pictures of it on the Duo yet. Specific fold adaptations are not yet documented.
Cizzuk Shihu
Shortcuts helper that lists iPhone Duo support
App Store confirmed: The App Store release notes for version 1.0: "Added support for iPhone Duo". Specific fold adaptations are not yet documented.
QM Soft Studio
Sleep and workout tracker redesigned for the big open screen
App Store confirmed: The App Store release notes for version 2.3.0: "Closed, it's an iPhone. Open, it's Joyway redesigned for the big screen. iPhone Duo support is now complete." Specific fold adaptations are not yet documented.
Vitalii Shvetsov
Original short stories for the moments in between, optimized for the Duo
App Store confirmed: The App Store release notes for version 1.4.1: "Optimized for iPhone Duo". Specific fold adaptations are not yet documented.
forYou inc.
App blocker whose layout now fits the Duo's side column and poses
App Store confirmed: The App Store release notes for version 1.3: "Added support for iPhone Duo (layout adapts to the side control column and device poses)". Specific fold adaptations are not yet documented.
Gomiigo Games
Tile-matching game that says it fits both the cover and the open Duo
App Store confirmed: The App Store description: "Optimized for iPhone Duo: adapts to both the cover and unfolded displays". Specific fold adaptations are not yet documented.
Semper Phoenix LLC
The notes say it adapts as you fold, and the Reader keeps your place
App Store confirmed: Jason Mitchell posted that version 1.1 adds iPhone Duo support (@dev_jmitchell on X). The picture on that post is App Store Connect, not the app. Version 1.1 on the App Store (id 6804047344, released 2026-10-08) says: "Ready for iPhone Duo. 1189 adapts as you fold and unfold, and the Reader keeps your place." The App Store screenshots are an iPhone and an iPad. Specific fold adaptations are not yet documented.
Modum B.V.
Music discovery from the makers of Gigs, with layouts that adapt to the Duo
App Store confirmed: The developer, Hidde van der Ploeg, said on X that NowPlaying and Gigs would both be available for iPhone Duo on day one (@hiddevdploeg on X). Version 2027.8 (released October 18, 2026) says: "NowPlaying now fully supports the new iPhone Duo." The pictures in that post show Gigs; we haven't seen NowPlaying on the Duo yet. Specific fold adaptations are not yet documented.
Ibrahim Kteish
A free Sudoku game with daily puzzles, friend races and a learning mode
App Store confirmed: The developer (@Bobj_c on X) posted that Sudoku Mania now supports iPhone Duo (@Bobj_c on X). The App Store release notes for version 1.4.0 (released October 11, 2026) say only "Supports iPhone Duo." The post's video is a general promo on an ordinary iPhone, not a Duo capture, and the App Store screenshots are regular iPhone screens. Specific fold adaptations are not yet documented.
Dmytro Shaniuk
Coffee machine on the folded phone and a pour-over timer when stood up as a tent
App Store confirmed: The developer's website for the app, which shows it working in the folded and tent positions of iPhone Duo (coffee.apppreviewstudio.com). Specific fold adaptations are not yet documented.
Dmytro Shaniuk
Barbecue timer with the grill below the hinge, the lid above, and a tent countdown
App Store confirmed: The developer's website for the app, which shows it working in the folded and tent positions of iPhone Duo (duo.apppreviewstudio.com). Specific fold adaptations are not yet documented.
Xu Wang
Wallpaper cropper that frames one image for both the cover and the inner display
App Store confirmed: The developer's App Store description and screenshots, which present FoldWall as made for iPhone Duo's two displays (apps.apple.com). Specific fold adaptations are not yet documented.
Jelly
GIF library that shows its iPad layout, collections beside the grid, when half-folded
App Store confirmed: Jelly, who makes GIFwrapped, in a Bluesky post with iPhone Duo simulator screenshots closed and half-folded, saying the app is a mess on the Duo but not that much of one, and doesn't need to be perfect for day one (bsky.app). No Duo-specific layout yet. Specific fold adaptations are not yet documented.
Joy Madhu
Calendar that shows today closed, then the month beside the day as you open it
App Store confirmed: The developer's own website, which presents Hourfold as built for iPhone Duo with an interactive folded, half open and unfolded demo (hourfold.app). Specific fold adaptations are not yet documented.
Balazs Pinter
Cutaway objects whose shell turns to glass as you open the phone
App Store confirmed: The developer's App Store description and website, which say opening the iPhone Duo fades the watch case to glass and then away, with a hinge-angle demo (innards.vercel.app). Specific fold adaptations are not yet documented.
Glasshouse Studio, LLC
A habit and activity timer with a layout for every Duo pose
Developer claimed: Cal, the developer, in an email to FoldHunt on October 8, 2026, and on timespent's iPhone Duo page (timespent.so), which shows it in five poses. The App Store notes for version 3.5.1 say "let's get ready for iphone duooo".
Wakeout
Movement games and one-minute moves, with a tent mode that makes the Duo a game console
Developer claimed: Pedro Wunderlich, Wakeout's co-founder, in a submission to FoldHunt on October 24, 2026, on Wakeout's iPhone Duo page and in a post on X on October 22, 2026, saying the app was adapted in the simulator and tried on a Duo at Apple's workshop in Mexico City. The App Store seller is Wakeout, LLC. The release notes for version 110.0.17 (released October 25, 2026) don't mention the Duo. The page's and the post's pictures are renders.
Society Rebel
Notes, writing and a cozy game world on one page; on the Duo, your writing becomes a book
Developer claimed: Society Rebel, the developer, in a submission to FoldHunt on October 17, 2026, describing layouts for the cover, the open display, the phone propped like a laptop and held like a book, ready for launch day. The App Store seller is Society Rebel LLC. The release notes for version 1.0.4 (released October 5, 2026) say iPhone Duo support is coming soon; the app's site doesn't show it yet.
DM Solutions and Development LLC
A golf scorecard in pencil that opens on the Duo like a club's card
Developer claimed: DM Solutions and Development, the developer, in a submission to FoldHunt on October 10, 2026, saying it will be ready on launch day, and on the app's site (shortpencilcards.com) and Instagram (instagram.com), which show it closed, open and standing. The app came out on the App Store on October 14, 2026 (version 1.0), and the site now says "On the App Store now, ready for iPhone Duo." The App Store listing doesn't mention the Duo. It is on Google Play too.
MWM
A coloring book: half fold the Duo for the drawing on one side, the tools on the other
Developer claimed: MWM, the developer, in a submission to FoldHunt on October 24, 2026, and on the Color Pop iPhone Duo page. The App Store seller is MWM. The release notes for version 2.68.02 (released October 28, 2026) don't mention the Duo. The Duo page's pictures show the app on hand-held and composited devices.
Bernardo Nunez
White, pink and brown noise, and a red reading light on one half when stood as a tent
Developer claimed: Bernardo Nunez, the developer, in a submission to FoldHunt on October 26, 2026, describing the cover, open and tent layouts. The App Store seller is Bernardo Nunez Rojas. The release notes for version 1.2 (released October 17, 2026) don't mention the Duo.
Gospel Technologies
A Bible study app whose study window takes half the screen when the phone is half folded
Developer claimed: Gospel Technologies, the developer, in a submission to FoldHunt on October 23, 2026, ticking the closed, open, half-folded and Split View poses. The App Store seller is Gospel Technologies LLC. The release notes for version 8.1.5 (released October 26, 2026) and the website don't mention the Duo.
Andrew Yates
Hour-by-hour stargazing forecasts, with the sky above the fold and the map below
Developer claimed: Andrew Yates, the developer, in a submission to FoldHunt on October 23, 2026, in a post on X the same day and in the Starglow v2.0 post on the Starglow blog. The App Store seller is Andrew Yates. The release notes for version 2.0.1 (released October 24, 2026) don't mention the Duo. The website's pictures of a half-folded Duo are composites on device artwork, and its unframed captures come from an ordinary iPhone.
Perjan Duro / MoneyCoach UG
A budget app whose bank accounts open as cards in a 3D leather wallet on the Duo
Developer claimed: Perjan Duro, the developer, in an email to FoldHunt in October 2026, and in a post on the MoneyCoach blog on October 22 about designing the wallet. The App Store seller is MoneyCoach UG (haftungsbeschraenkt). The release notes for version 12.5.1 (released October 21, 2026) don't mention the Duo; the developer's video says the wallet arrives on October 23.
Vincent Friedrich
A 3D card index for your contacts whose cards tilt with the Duo's hinge angle
Developer claimed: Vincent Friedrich, the developer, in a submission to FoldHunt on October 18, 2026, and on the app's site and press kit (neoxapps.de). The app came out on the App Store on October 23, 2026. The App Store description says that as soon as you start folding the Duo, the contact list adjusts to the folding angle.
Zachary Coleman
Washington State ferry departures, with your routes beside the departure board when open
Developer claimed: Zachary Coleman, the developer, in a submission to FoldHunt on October 22, 2026. The Aweigh website says the app is for iPhone, iPhone Duo and Apple Watch, and its looping demo and the developer's YouTube trailer show it on an iPhone Duo. The App Store seller is Zachary Coleman; version 1.0.2 (released October 3, 2026) doesn't mention the Duo.
Aleksander Hoff
An idle clicker for parents pinned under a sleeping baby, with a tabletop layout
Developer claimed: Aleksander Hoff, the developer, in a submission to FoldHunt on October 21, 2026, saying the Duo layouts are out in version 1.1.0 and that the standing pose hasn't been tested yet but should work, going by tests in the simulator. The App Store seller is Aleksander Hoff. The release notes for the current version, 1.1.1 (released October 22, 2026), don't mention the Duo.
Tim Haerle
Pass-and-play battleship for two: flip the folded Duo to hand over the turn
Developer claimed: Tim Haerle, the developer, in a submission to FoldHunt on October 16, 2026, saying the game is made for every pose except Split View and is in App Store review for launch day, and on the game's site (playduo.games), which shows it on a rendered iPhone Duo half-folded like a laptop. A search of the App Store found no listing yet; the site says it is coming soon there.
Onlabs Infotech
A dyslexia-friendly reader with its AI tutor beside the page on the open Duo
Developer claimed: Onlabs, the developer, in a submission to FoldHunt on October 8, 2026, saying the iPhone Duo update ships on launch day. The App Store page does not mention the Duo yet.
Onlabs Infotech
Workout recaps with your trends beside the workouts behind them on the open Duo
Developer claimed: Onlabs, the developer, in a submission to FoldHunt on October 8, 2026, saying the iPhone Duo update ships on launch day. The App Store page does not mention the Duo yet.
Luuk van Baars
Scan your greeting cards, then open and close them in 3D by opening and closing the Duo
Developer claimed: Luuk van Baars, the developer, in a submission to FoldHunt on October 24, 2026, ticking the closed, open and Split View poses. The App Store seller is Luuk van Baars. The release notes for version 1.1.1 (released October 23, 2026) say cards that fold at the top now line up with the Duo's fold too.
Matthew Tucker
A Halloween Horror Nights logbook that spreads across both halves of the open Duo
Developer claimed: Matthew Tucker, the developer, in a submission to FoldHunt on October 21, 2026, ticking the closed, open, half-folded, stand and Split View poses without describing the layouts. The Frightfolio roadmap lists Made for iPhone Duo as shipped in version 1.3: open, the app spreads across both halves, with the passport reading like a book; a night board for the Duo is planned. The App Store seller is Matthew Tucker. The release notes for version 1.3.1 (released October 20, 2026) don't mention the Duo.
Shayes Apps LLC
Trackers in adaptive columns that show more at once and steer clear of the fold
Developer claimed: Stephen at Shayes Apps LLC, the developer, in a submission to FoldHunt on October 18, 2026, which lists the closed, open, half-folded and Split View poses but describes only the open layout. Version 8.1.1 (released October 12, 2026) does not mention the Duo, and neither does the description.
Keegan Hudson
Naval battles on a game board with a radar view, made for the half-folded Duo
Developer claimed: Seasmilesstudios, the developer, in a submission to FoldHunt on October 21, 2026, and the Reddit user kaz00m, who identifies as the developer, in a comment on r/iPhoneDuo. The App Store seller is Keegan Hudson. Neither the description nor the release notes for version 1.1 (released October 22, 2026) mention the Duo.
Shayes Apps LLC
Countdown cards in columns on each side of the fold, so the hinge never cuts one
Developer claimed: Stephen at Shayes Apps LLC, the developer, in a submission to FoldHunt on October 18, 2026, and in the App Store release notes for version 12.2.0 (released October 8, 2026), which say "iPhone Duo support" and nothing more. The submission lists the closed, open, half-folded and Split View poses but describes only the open layout.
Arshad Shaikh
A storage cleaner that finds duplicate, blurry and similar photos on the phone, offline
Developer claimed: Arshad, the developer, in a submission to FoldHunt on October 24, 2026, ticking the closed, open and Split View poses without describing the layouts. The App Store seller is Arshad Shaikh. The release notes for version 2.0.0 (released October 26, 2026) don't mention the Duo. Specific fold adaptations are not yet documented.
Austin Emmons
Pause drifting clouds, find a shape in them and draw over it
Developer claimed: Austin Emmons, the developer, in a submission to FoldHunt on October 23, 2026, saying it was checked in the iPhone Duo simulator and ticking only the open display, without describing the layout. The App Store seller is Austin Emmons. Version 2.0.0 (released October 22, 2026) adds "layouts that adapt to your screen" without naming the Duo, and the website doesn't mention it. Specific fold adaptations are not yet documented.
RDub Studios, LLC
A group vote on dinner: cook, order in or go out, with layouts for the open Duo
Developer claimed: Rich Weiss of RDub Studios, the developer, in a submission to FoldHunt on October 24, 2026, asking for it to be listed as developer claimed until it is verified, and on the RDub Studios press page, which says dinnerrr is optimized for the Duo. The App Store seller is RDub Studios, LLC. The release notes for version 1.0.2 (released October 25, 2026) don't mention the Duo, and the press kit's screenshots are from an ordinary iPhone. Specific fold adaptations are not yet documented.
VOQ
A focus timer where each session is a journey to a real place you could reach in that time
Developer claimed: VOQ, the developer, in a submission to FoldHunt on October 28, 2026, ticking the closed, open, half-folded, stand and Split View poses without describing the layouts. The App Store seller is Nguyen Vu Thai. Ferd Focus came out on October 26, 2026; neither its App Store page nor VOQ's website mentions the Duo. Specific fold adaptations are not yet documented.
Quotes, scheduling, job photos and invoices for contractors and home service pros
Developer claimed: Ben at Subser, the developer, in a submission to FoldHunt on October 20, 2026, saying the app was tested in the iPhone Duo simulator for the closed, open, half-folded, stand and Split View poses, without describing the layouts. The App Store seller is subser LLC. Version 1.0.3 (released October 15, 2026) does not mention the Duo, and neither does the description. Specific fold adaptations are not yet documented.
Okroshka Lab
Live earthquake maps, alerts and safety tools, adapted for the Duo, its developer says
Developer claimed: Okroshka Lab, the developer, in a submission to FoldHunt on October 14, 2026, saying the app was built and tested in the iPhone Duo simulator for the closed, open, book, stand and Split View poses, without describing the layouts. The App Store seller is Artem Demidenko (id 6762145993). Version 1.3 (released August 24, 2026) came out before the Duo was announced and does not mention it, and neither does the description. Specific fold adaptations are not yet documented.
Morin Innovation
Immersive 180° and 360° video, with the controls below when folded like a laptop
Developer claimed: Florent Morin, the developer, in a post on X with a video of MVPlayer on the iPhone Duo, saying it will be available on the Duo on day one (@florentmorin on X). The App Store page does not mention the Duo yet.
SixTwelve Studio
A gravity puzzle that widens as the Duo opens, with face-to-face tabletop duels
Developer claimed: The developer, in the App Store release notes for version 1.0.3 (released October 10, 2026): opening the phone widens the chamber without restarting the run; half-folded, aiming moves to the lower half; laid flat, two players race face to face. The developer's product page also names the iPhone Duo.
SixTwelve Studio
A camera that composes two exposures on opposite sides of the fold
Developer claimed: The developer, in the App Store release notes for version 1.0.5 (released October 10, 2026): open, each exposure is composed on its own side of the fold; half-folded, a waist-level viewfinder sits above the camera controls; standing, a timer takes the second exposure. The developer's product page also names the iPhone Duo.
SixTwelve Studio
A shared list organizer, with a list on each facing page of the half-folded Duo
Developer claimed: The developer, in the App Store release notes for version 1.1.0D (released October 10, 2026): half-folded like a book, a list sits on each page, or the list stands upright with typing on the lower half; with the cover in landscape, shopping mode has larger rows. The developer's product page also names the iPhone Duo. The current version is 1.1.3.
Justin Rhoads
Scripture memory practice, with controls in reach on the cover and text clear of the fold
Developer claimed: Justin Rhoads, the developer, in merged GitHub pull request 12, which reports checking the layouts in the iPhone Duo simulator closed, open, rotated and half-folded. There are no pictures of it on the Duo yet.
SixTwelve Studio
A notebook with notes beside the editor, and typing below the fold
Developer claimed: The developer, on its product page and in the App Store release notes for version 1.0.9D (released October 10, 2026): open, the notes sit beside the editor; half-folded, you write above the fold and type below; standing, you can dictate notes hands-free. The current version is 1.1.2.
Mustafa Bhatkar
Breathing exercises with the ball up top and the controls below when half-folded
Developer claimed: The developer, in the release notes for version 5.0.3 (released October 11, 2026), under "Optimised for iPhone Duo": half-open on a table, the breathing ball stays on the top half and the controls move within reach; stood on its edge, the session carries on in landscape with a larger ball; on the inner display, wider cards fit all four exercises on one screen and Progress shows both charts side by side. There are no pictures of it on the Duo yet. The App Store seller is Mustafa Bhatkar (id 1506712199).
Atilla Taskiran
Two clocks stack on the cover when a second zone is on
Developer claimed: Atilla posted that the Duo adjustments for Bauhaus Clock have just started (@_atilla1 on X). The App Store seller is Atilla Taskiran (id 6755106534). Version 1.1 (released 2026-06-11) does not mention the Duo, and neither does the description.
LIGHT WITHIN LIFE PTE. LTD.
Camera on the cover; half-folded, the transcript below the slide
Developer claimed: Oran Xu posted a video of HoldSay on a rendered iPhone Duo (@xl_oran on X). The HoldSay account said the App Store screenshots were uploaded and linked that video (@holdsay on X). The App Store version dated 2026-10-05 (id 6777466153) describes snapping slides into a transcript. Those release notes do not mention the Duo.
Larry Chen
A fruit's picture on one side, when it's in season and what it pairs with on the other
Developer claimed: The developer, Larry Chen (@larrychen), posted a video of Peach & Pea optimized for iPhone Duo (@larrychen on X). The App Store seller is Larry Le Chen (id 6789774523). The release notes for version 1.4 (released October 10, 2026) say it added support for iPhone Duo, without describing the layouts.
Vincent Neo
Singapore weather and air quality; on a table, the rain map stands above its controls
Developer claimed: Vincent Neo, the developer, in a post on X saying Environment will be updated for the Duo soon, with table top mode, and showing it closed, half-folded and open (@iVincentNeo on X). The current App Store version (1.8.2, released October 19, 2026) does not mention the Duo.
Bader Alabbasi
The countdown to the next prayer beside the day's times, on the cover and open
Developer claimed: The developer (@snowmoon_ on X) posted Miqat on the Duo's cover, open and half-folded, and said it is nearly ready for iPhone Duo (@snowmoon_ on X). The App Store release notes for version 2.2 (released October 19, 2026) mention new layouts for iPad, iPhone Duo and the Prayer Board, without describing them.
Codakuma Ltd
Workout replays with the map beside the stats, and laptop-style controls when half-folded
Developer claimed: Shaun, the developer, on the app's iPhone Duo page with screenshots of every pose, said Duo support would be ready on day one (getpersonalbest.com), linked from a post on X. The App Store release notes for version 21.0 (released October 13, 2026) say the version includes iPhone Duo support, as well as better iPad support and UX improvements.
Tiny Ideas (Claire McGregor and Stuart Hall)
Strength workouts that log your set closed, open flat or half-folded on a gym bench
Developer claimed: Claire McGregor, co-founder of Tiny Ideas, in a post on X with a video of StrongEra on the iPhone Duo, saying it is Duo-ready (@clairesayshi on X). The App Store page does not mention the Duo yet.
Day Well Spent LLC
Basketball playbook that gives the court and its tools more room when open.
Developer claimed: Jordan Morgan (@JordanMorgan10), in a post on X. That post links Jordan's write-up of adapting Elite Hoops. The App Store release notes for version 2.3.8 (released October 19, 2026) say the app is made for iPhone Duo and keeps your selected play and practice edits as you fold, unfold and rotate. The studio's site, daywellspent.io, lists this app, and the App Store seller is Day Well Spent LLC.
Qianhao Luo (千皓 罗)
A focus timer that unlocks the next session after a squat break
Developer claimed: Qianhao Luo, the developer, in the App Store release notes for version 1.1.0, which announce iPhone Duo support: a half-folded squat counter and pages adapted for the open inner screen. The current version is 1.1.2, whose notes don't mention the Duo.
Bravely Studios LLC
Voice-to-clipboard dictation, with a wider transcript list on the open Duo
Developer claimed: Bravely Studios, the developer, on its SayCopyPaste Duo page (updated October 17, 2026), which names version 0.10.7. The App Store listed version 0.10.5 on October 18, so the Duo version may not be out yet. The page's screenshots are labeled as simulator captures.
伟 曹 (Wei Cao)
A music player built on a wall of album covers, full screen on both Duo displays
Developer claimed: 伟 曹 (Wei Cao), the developer, in the App Store release notes for version 2.1 (released October 8, 2026), which announce iPhone Duo support, full-screen layouts on both displays, and an album wall that stays in place when folding and unfolding. The App Store seller is 伟 曹, and the copyright names Wei Cao.
Bravely Studios LLC
Sticky notes on the cover, with the selected note beside the list when open
Developer claimed: Bravely Studios, the developer, on its Sticki.ly Duo page (updated October 17, 2026), which names version 1.3.2. The App Store listed version 1.3.0 on October 18, so the Duo version may not be out yet. The page's screenshots are labeled as simulator captures.
Lucidena LLC
A symptom calendar with two configurable panes on the open Duo
Developer claimed: Lucidena, the developer, in its changelog for version 1.2.0 (October 8, 2026), which describes Duo layouts. The App Store now lists version 1.2.1 (released October 16, 2026), whose notes don't mention the Duo.
Ali Corak
A charging clock with animated scenes, arranged for the half-open Duo
Developer claimed: Ali Corak, the developer, in the App Store release notes for version 1.1.16 (released October 17, 2026), which describe Duo changes: readouts that keep clear of the status icons on the open display, and effects that center on the visible half when the phone is half-open. The App Store pictures show ordinary phones.
Boston Research Journals LLC
A read-aloud app with a larger home screen and reader when open, its developer says
Developer claimed: A comment by u/ugly_engineer, who identifies as Earlo's developer, in the r/iPhoneDuo app showcase thread on Reddit, which describes closed, open and propped-up use. The App Store's cross-device picture names iPhone Duo, but the description and the release notes for the current version, 1.0.1 (released October 1, 2026), don't mention it.
Joseph Ting
Sleep sounds, with a bedside clock and a tabletop mixer on the half-folded Duo
Developer claimed: Joseph Ting, the developer, in the App Store release notes for version 1.3 (released October 9, 2026), which describe layouts for the half-folded Duo on a nightstand or a table, and the sound fading when the phone closes. The app's site describes Duo support too.
SixTwelve Studio
A fox platformer, with the game above a controller deck on the half-folded Duo
Developer claimed: The developer, in the App Store release notes for version 1.0.3 (released October 10, 2026): half-folded, the game sits above a controller deck; open, the forest view is wider; closing the phone pauses the game. The developer's product page also names the iPhone Duo.
SixTwelve Studio
A photo editor with the image above the fold and a darkroom deck below
Developer claimed: The developer, in the App Store release notes for version 1.0.7D (released October 7, 2026): half-folded, the image sits above a darkroom deck of adjustment pads, a scroll wheel and an A/B button, and a reference photo can face the edit. Version 1.0.7D2 extends the layouts to the Atelier painting room. The developer's product page also names the iPhone Duo. The current version is 1.0.8.
SixTwelve Studio
A shutter- and aperture-priority camera with its viewfinder and controls apart half-folded
Developer claimed: The developer, on its product page and in the App Store release notes for version 1.0.5 (released October 10, 2026): half-folded, the viewfinder sits above the controls, with recent frames beside the live view; closed, the cover shows a preview for the subject.
ariberko
One player on the cover, or two paddles facing each other on the open Duo
Developer claimed: The developer, ariberko, in the project's README on GitHub: solo play on the cover, and two-player play on the open iPhone Duo.
FocusPomo Apps
Rain, wind and other sounds on a little radio, with the controls below it half-folded
Developer claimed: The developer, in the App Store release notes for version 2.0.1: half-folded, the controls sit below the radio; fully open, it switches to three rows.
Alexandre Vazquez
An investment journal with the chart above the fold and its controls below
Developer claimed: The developer, in the App Store release notes for version 1.8.0: open, the portfolio sits on one half and the chart on the other; half-folded like a laptop, the chart sits above the fold and its controls below.
Jiahao Chen
Editor-curated playlists with the story behind each track, updated for the Duo
Developer claimed: The developer, in the release notes for version 1.3 (released October 10, 2026): "Compatible with iPhone Duo". Gill (@gill_chan_), who calls DRM "my app", posted three promotional images of it on X on October 11, 2026 (@gill_chan_ on X): rendered Duo frames with its playlists and its player on the closed cover, and its player on the open phone. The App Store seller is Jiahao Chen (id 6811805626).
Nikos Galinos
A free calorie and macro tracker with layouts for the open and closed Duo
Developer claimed: Nikos Galinos, the developer, in a Reddit post on October 10, 2026 saying FoodieCalc now has "support for iPhone Duo" (reddit.com), and on the app's website, which shows it on the Duo closed and open: "Fold it, open it, or rotate it—the interface reorganizes instead of simply shrinking." The current version on the App Store, 1.5.1 (released September 27, 2026), doesn't mention the Duo, and neither does the description. The App Store seller is Nikos Galinos (id 6792482391).
Haedun Kim
A comic reader whose two-page spread meets at the crease
Developer claimed: The developer, in the release notes for version 1.8.2 (released October 9, 2026), which say it now officially supports iPhone Duo and describe the open layout. There are no pictures of it on the Duo yet. The App Store seller is HAEDUN KIM (id 6780071705).
Dong Zhang
Your Apple TV's picture on one half and its remote on the other, open flat
Developer claimed: The developer, Dong Zhang, in the release notes for version 1.2.0 (released October 11, 2026): "Built for iPhone Duo — open the phone and the Studio, tabs and Library settle either side of the fold". The same day, a video on X showed the Duo layouts, labelled work in progress (@Walker23333333 on X). The App Store seller is 栋 张 (id 6813980881).
Esat Arslan
A Tesla speedometer and map dashboard that fills the cover closed and the open screen
Developer claimed: The developer, posting as Tespit on X on October 10, 2026, with a video of version 1.1.12 that shows the dashboard on iPhone Duo closed and open (@TespitApp on X). The release notes for 1.1.12 (released October 10, 2026) list iPhone Duo support, folded and unfolded.
An avatar selfie camera, preview on the top half and the shutter on the bottom half-folded
Developer claimed: The developer, posting as VCam on X on October 10, 2026, with a video of version 1.1.5 on iPhone Duo closed and half-folded (@vcamapp on X). The release notes for version 1.1.5 (released October 10, 2026) say you can use iPhone Duo partly folded, open like a book to shoot on the right half or stood up with the image on top and the controls below.
Rainer Bracharz
Turns a video of your work into stop motion, the film so far on the cover while you record
Developer claimed: The App Store release notes for version 2.2 (released October 8, 2026), by the developer Rainer Bracharz and written in German, say "Mehr für das iPhone Duo" (more for the iPhone Duo) and describe the cover and the inner viewfinder while recording.
iCertifi
Electrical certificates, one page of the form at a time closed, two columns of it open
Developer claimed: iCertifi, in a post on X with a picture of the app on both Duo displays, saying every certificate page is being tested on the iPhone Duo simulator (@iCertifiApp on X). The cover screen in the picture is titled iCertifi Cloud, so this listing is iCertifi Cloud Pro: Sync (seller iCertifi, id 6744922627); the post names only iCertifi, and the same seller also has iCertifi: Electrical Certs (id 490104124). Version 3.3.1 (released October 1, 2026) did not mention the Duo, and the current version, 3.3.4 (released October 17, 2026), doesn't either.
Mockup maker with a slider that folds its 3D Duo open and shut
Developer claimed: The developer, posting as ShellYeahhhhhh (@TreerPP), in a video on X of ShellYeah's 3D Duo mockup opening and closing, with the app's own editor shown on both displays (@TreerPP on X). Earlier posts announced Duo mockups (@TreerPP on X) and iPhone Duo support (@TreerPP on X). The App Store seller is 子捷 陈 (id 6768907932). The release notes for version 2.2.13 (released October 16, 2026) add Connect-iPhone Duo Outer and Inner canvas sizes in 3D, Flat and Animation modes.
Farid Ahmad
Sudoku with the number pad moved beside the grid on the open Duo
Developer claimed: Farid Ahmad, who makes it, in a post on X with a recording (@farid9820 on X): "Sudoku Unlimted is iPhone Duo ready". The App Store release notes for version 4.9 (released October 9, 2026) say "Duo Ready !!" and "Landscape mode".
Hideo Suzuki
A spellbook shooter: close the phone to block spells, open it to chant your own
Developer claimed: The developer, @FoamyDreamIR on X, says the small game was made as a test of using opening and closing the phone as a game control, and that it passed App Review on the third try (@FoamyDreamIR on X). The trailer's end card says the open and close of the iPhone Duo is the spellbook. The App Store description describes closing and opening the book but does not name the Duo. The App Store seller is Hideo Suzuki (id 6819600771), and version 1.0.0 was released on October 9, 2026.
Embraceware Software Inc
An alarm clock whose bedside clock fills the cover, then the whole open Duo
Developer claimed: Embraceware said on Bluesky that its iOS apps were updated to be fully compatible with all of the iPhone Duo screen options, with a video of Ultimate Game Guide, HoloSnaps and Awaken on the Duo (bsky.app). The App Store seller is Embraceware Software Inc (id 327767743). Version 7.1 (released July 24, 2026) does not mention the Duo, and neither does the description.
Embraceware Software Inc
Holographic photo cards in three columns on the cover, six across the open Duo
Developer claimed: Embraceware said on Bluesky that its iOS apps were updated to be fully compatible with all of the iPhone Duo screen options, with a video of Ultimate Game Guide, HoloSnaps and Awaken on the Duo (bsky.app). The App Store seller is Embraceware Software Inc (id 313634509). Version 2.0.1 (released June 21, 2026) does not mention the Duo, and neither does the description.
Timelabs Ltd
Read on the cover; open it for a Today page or the feed beside a video's summary
Developer claimed: The developer, Francesco Pretelli, said on Bluesky that the iPhone Duo version and its Duo screenshots were submitted, and posted four of them (bsky.app). On October 10, 2026, Francesco posted on X that the update had passed review and that Duo support and the Duo screenshots are live on the App Store (@timefrancesco on X). The App Store seller is Timelabs Ltd (id 6504148117). The release notes for version 3.1.2 (released October 17, 2026) list "Added support for iPhone Duo" under 3.1.0.
Matt Kelsh
A scrolling weather chart that spreads across the open Duo, with your places beside it
Developer claimed: The developer, Matt Kelsh (@mattro.design), posted a video of Sunshine Weather on iPhone Duo on Bluesky with "Coming to an iPhone Duo near you" (bsky.app). The App Store seller is Matt Kelsh (id 6751937260). Version 1.1.0 (released September 21, 2026) does not mention the Duo, and neither does the description.
Embraceware Software Inc
Shelves of retro game boxes that stretch across the open Duo
Developer claimed: Embraceware said on Bluesky that its iOS apps were updated to be fully compatible with all of the iPhone Duo screen options, with a video of Ultimate Game Guide, HoloSnaps and Awaken on the Duo (bsky.app). The App Store seller is Embraceware Software Inc (id 1182547155). Version 4.6 (released May 18, 2026) does not mention the Duo, and neither does the description.
Ben Harraway (Lumen Digital Ltd.)
Family meal planner with meal ideas on one half and the details or plan on the other
Developer claimed: Ben Harraway, the founder, in a post on X with pictures of Bite Club on the Duo (@BenLumenDigital on X). The App Store seller is Lumen Digital Ltd., the company named in the Bite Club press kit. The App Store page does not mention the Duo.
Aleksei Usanov
Flashcard reviews that carry on from the cover to the open Duo and back
Developer claimed: The developer, in a video posted by Cognito's account on X (@CognitoAiCards) showing the app closed, open and turned upright on iPhone Duo (@CognitoAiCards on X). The App Store text doesn't mention iPhone Duo.
Potatso Lab LTD
Daily wallpapers on the cover; open, the wallpaper fills the screen beside its tools
Developer claimed: Lance (@icodesign_me), Cuto's developer, in a post on X with screenshots of Cuto on the cover and open, saying Opus 5.5 did its basic Duo adaptation almost in one go (@icodesign_me on X). The App Store page doesn't mention the Duo.
FabricLoop Inc
Two task columns on the cover; open, the board widens to three Kanban columns
Developer claimed: FabricLoop, the developer, in a post on X with a mockup video of its Tasks board on the cover and open, saying the app is already native for iPhone Duo (@fabricloop on X). The App Store page doesn't mention the Duo.
Mary Ha
An expense tracker with a rail on the cover and charts beside your money open
Developer claimed: The developer, Mary Ha (@maryha_here on X), posted Finny closed and open on iPhone Duo (@maryha_here on X). The current App Store release notes (version 1.21) don't mention the Duo.
Thomas Ricouard
Mastodon feed on the cover, sidebar open across the crease
Developer claimed: Thomas Ricouard (@Dimillian) posted Ice Cubes on Duo cover and open layouts (@Dimillian on X).
Left Pocket LLC
Poker session photo above the crease, stats below
Developer claimed: Left Pocket LLC posted half-folded and cover layouts of Left Pocket (@leftpocketapp on X) and said the app would have Duo support from day one. The current App Store description (version 8.3.1) doesn't mention the Duo.
Nathan Geckler
Quit fast food with your progress on one half and today's check-in on the other
Developer claimed: Nathan Geckler, the developer, in a post on X with a video of Thruu's reworked iPhone Duo layout (@NathanGeckler on X). The App Store page does not mention the Duo.
Hideyuki Miyanishi (StudioAnsh)
Jw_cad floor plans on the cover, and the whole drawing across the open screen
Developer claimed: StudioAnsh, Hideyuki Miyanishi's studio, in a post on X with simulator screenshots, saying iPhone Duo support is in progress (@TouchJW_Info on X). The App Store seller is Hideyuki Miyanishi; the App Store page does not mention the Duo.
Tim Leland
Radar on the left half of the open Duo, today's forecast on the right
Developer claimed: Tim Leland, who makes WeatherExt, in a post on X showing the app on the Duo simulator (@TimLeland on X). The App Store release notes for the current version (1.9, released October 14, 2026) say only "Bug fixes and UI improvements" and do not name the Duo.
Guram Kajaia
The current interval's countdown on the cover, the whole workout beside it when open
Developer claimed: Guram Kajaia, the developer, in a post on X with a video of Interval Timer on the iPhone Duo, saying Duo support is coming (@GuramKajaia on X), and in a reply on X saying it will be ready on day one (@GuramKajaia on X). The App Store page does not mention the Duo yet.
Squircle Apps LLP
Word of the Day on the cover, a word's picture on one half and its meaning on the other
Developer claimed: Vidit Bhargava, who makes LookUp (per his X bio), in a post on X with previews of LookUp's coming iPhone Duo update, saying the Duo updates are going to be big (@viditb on X). The App Store page does not mention the Duo yet.
Squircle Apps LLP
Film list on the cover, then the poster on one half and its details on the other
Developer claimed: Vidit Bhargava, who makes Movie Buzz (per his X bio), in a reply on X with a video of it closed and open on the iPhone Duo, saying he is updating it for the Duo (@viditb on X). The App Store page does not mention the Duo yet.
Ike Nwokoye
Your profile on the cover, and open flat, a Bible chapter beside your memories
Developer claimed: Ike Nwokoye, the developer (on X as Ike N, @praising_ike), posted iPhone Duo screenshots of MyPraise App and says the Duo update is being prepared for launch day (@praising_ike on X). The App Store page does not mention the Duo yet.
Suman Hansada
A leather notebook on the cover that opens into a spiral notebook bound at the fold
Developer claimed: Suman Hansada, the developer, in a reply on X to Linda Dong's post about Duo App Store submissions with previews of NoteWorthy on the iPhone Duo, saying the Duo version is coming soon (@SumanHansada on X). The App Store page does not mention the Duo yet.
Evolved Orthodontics SL
Patient photos and X-ray tracing side by side, an aligner model on the cover
Developer claimed: The developer, Alberto (@SwiftyAlbert on X), answered a call for apps ready on the iPhone Duo's first day with three screenshots of OrthoKit on the Duo (@SwiftyAlbert on X). The App Store release notes for version 27.1.0 (released October 10, 2026) are headed "Ready for iPhone Duo": photo editing and cephalometric tracings are adapted to different folding positions.
Tiny Ideas Pty Ltd
Keeps goals and meals clear of the hinge when folded, and docks sheets beside it
Developer claimed: Stuart Hall, in a post on X with a video of Proto on the iPhone Duo, saying it will support the Duo from day one (@stuartkhall on X). The App Store page does not mention the Duo yet.
Luis Carlos Garza Cisneros
Predict Liga MX scores on the cover or across the open Duo
Developer claimed: The developer, Carlos Garza (@cgarzasv on X), posted a video of QuinielaMX on the iPhone Duo (@cgarzasv on X). The App Store page doesn't mention the Duo yet.
Francisco Martínez
Endless Minesweeper, the same run goes on as you fold, unfold and turn the phone
Developer claimed: Francisco Martínez, the developer, in a post on X with a video of SAPPER on the iPhone Duo, saying it is ready for the Duo (@framara on X). The App Store page does not mention the Duo yet.
Alex Manzer
Remote control for your Mac, folded like a laptop with the trackpad and keys below
Developer claimed: Alex Manzer, the developer, in posts on X with a video of Telkino's laptop mode on the iPhone Duo, saying it is ready for the Duo (@AlexManzer on X). Another of the developer's posts calls it the laptop mode being added. The App Store page and release notes do not mention the Duo yet.
Trade Echo LLC
AI trading chat on the cover, order books and charts side by side open
Developer claimed: The founder (@itsCblast on X) posted a video of Trade Echo on iPhone Duo and said it is fully optimised for it (@itsCblast on X). The App Store page doesn't mention the Duo yet.
Azra Games
Azra Games' dark fantasy RPG, due in November with controls and views for each display
Developer claimed: Apple, in its Newsroom article of October 22, 2026, on apps and games for iPhone Duo, which says UnGodly "launches on the App Store in November". Its App Store page lists an expected date of November 11, 2026.
Your VO2 max score in one column closed, then the score beside your fitness pass open
Developer claimed: Xipu Li, the developer, in a post on X with a video of VO2 Max Pro closed and open on the iPhone Duo, captioned "iPhone Duo ready" (@theXipuLi on X). The App Store page does not mention the Duo yet.
Abdulaziz Lafi
One Quran page on the cover, two facing pages when you open it
Developer claimed: The app's designer, عبدالرحمن الوسمي (@HDR74 on X), posted a video of Wird on the Duo and said it supports iPhone Duo (@HDR74 on X).
groov creator limited
Pick a book off the shelf on the cover, read it across the inner screen
Developer claimed: Weera Vera, credited on biblio.ink as Biblio's builder, in a reply on X to a call for day-one iPhone Duo apps, with the same promo video (@PHz on X). It was first posted by @0xDBC, an account that shares groov creator limited's apps (@0xDBC on X). The App Store page does not mention the Duo yet.
Mark Battistella
Shared baby log, one-tap buttons paging down the side bar and a summary beside it open
Developer claimed: Mark Battistella, the developer, in a Bluesky post and its reply with recordings of Otuli on the iPhone Duo, closed and open, saying the paging tab bar works and the rest is still UI work (bsky.app). The App Store page does not mention the Duo.
Pitou Technologies, LLC
Air quality map, with the sensor sheet on the cover and beside a wider map when open
Developer claimed: Kyle Bashour, who makes Paku, in a Bluesky post with a first look at Paku on iPhone Duo, closed and open (bsky.app). A week later Kyle asked for someone with Duo hardware to try a build, so the Duo version is not out yet.
Eric Abraham Vargas Flores
Focus app that grows a village, with a welcome that spreads out when the Duo opens
Developer claimed: Eric Vargas (@brol1dev), in a post on X saying they cooked iPhone Duo support, with a video of Scroll Survival on the cover and the open iPhone Duo.
Userscript browser whose toolbar runs down the side of the Duo
Developer claimed: The developer, posting as u/Own-Interview-199 in r/iosdev that Teak is ready for iPhone Duo on the Xcode 27.1 beta (reddit.com). The same account runs r/TeakBrowser as Teak's creator; the App Store seller is 阳 刘.
David McMahon
Watch collection app whose grid goes from two watches across to six when open
Developer claimed: The developer, posting as u/maxcalibre3 in r/reactnative with an iPhone Duo simulator video of a Timeboxd test build on Expo 58 beta (reddit.com). The same account has posted that it built Timeboxd; the App Store seller is David McMahon.
Charles Etzel
Pixel camera that keeps the viewfinder on one plane when the Duo folds.
Developer claimed: Chad Etzel (@jazzychad), in a post on X. The App Store seller is Charles Etzel and the bundle id is net.jazzychad.DitherCam; the X profile links to neocam.app.
Mark Andrade
Color by number with the palette sized to one half and a canvas you can slide or zoom.
Developer claimed: Mark Andrade, in "Updating my app to iPhone Duo multiple screen sizes" on markandrade.com (markandrade.com). The App Store seller is Mark Andrade.
Ross Williams
Gift ideas journal with a cover rail, and Quick Capture beside Safari in Split View.
Developer claimed: Ross Williams, on The Gift Journal site (thegiftjournal.app), which says version 1.2 added adaptive iPhone Duo layouts. The App Store lists version 1.5 (released October 9, 2026); the site says 1.5 is a localisation-only update that carries the 1.4 product forward.
Chen Yao
Plant identifier that opens into two facing pages, photo on the left, care on the right.
Developer claimed: The YardMate team, on its iPhone Duo page (yardmate.ai), which says the layout comes in YardMate 2.0 in October 2026. The App Store seller is CHEN YAO. Version 2.1.0 shipped on October 16, 2026, but its description and release notes do not mention the Duo, so the layout has not shipped yet.
SuperDAO Inc
A crypto exchange app whose trading screen gets a larger chart on the open Duo
Developer claimed: SuperEx, in a post on X on October 24, 2026, saying the app is now compatible with iPhone Duo, with three pictures of it on a Duo. A reader sent it to FoldHunt on October 25, 2026. The App Store seller is SUPERDAO INC. The release notes for version 2.9.42 (released October 22, 2026) don't mention the Duo, and we can't tell whether the pictures are photographs or composites.
Justin Heintz
A one-tap timing game with the circle above and the tapping area below when half-folded
Developer claimed: Justin Heintz, the developer, in the App Store version history for version 2.1 (October 8, 2026), which describes Duo layouts. The App Store pictures show ordinary phone layouts. The current version, 2.1.1 (October 12, 2026), has release notes that don't mention the Duo.
3810 Production
Walks you through phone checks, with the touch test sized for the open Duo
Developer claimed: 3810 Production, the developer, in the App Store release notes for version 1.0.1 (released October 15, 2026), which say the app is optimized for iPhone Duo, fills the large inner display when unfolded, and keeps the touch-test squares a comfortable size.
Hemal Modi
A catalog of interface components, with a fold lab and side-by-side demos for the Duo
Developer claimed: The developer, in the App Store release notes for version 1.7, when the app was called PlayWithComponents: open, the catalog and the selected demo sit on facing pages, and a fold lab shows the fold and the reserved screen space. Version 1.7.2 renamed the app; the current version, 1.8, is free to download.
Loic Bernard Serge Chollier
DIY furniture plans, with the plan beside its cut list on the open Duo
Developer claimed: The developer, in the App Store release notes for version 2.1.0: open, the 3D plan sits beside its cut list and details, or the build steps beside their instructions. Version 2.1.2 is a later update.
Hemal Modi
Arcade games controlled by head movement, with a hands-free tabletop layout on the Duo
Developer claimed: The developer, in the App Store release notes for version 1.6: standing half-folded, games sit on the upright half, with head tracking, score and controls below. Version 1.7 added a separate habit feature; the current version, 1.8 (October 17, 2026), makes the app free to download and doesn't mention the Duo.
ZIH LONG GUO
Live translated meeting captions, above the controls on the half-folded Duo
Developer claimed: The developer, in the App Store description and release notes for version 3.0.0: propped half-folded, the captions sit on the upper half and the listening controls on the lower half.
Zhengyu Sun
Piano you play by tapping the rhythm, with one part on each side of the open Duo
Developer claimed: The developer, on the Pianoesis website and in the App Store release notes for version 2.1.1: open in landscape, the Duo gives each musical part its own side. The Duo Mode screenshot and video on the site show an iPad. The current version is 2.1.2, released October 14, 2026.
ariberko
A game that uses the Duo's fold as a knife: line up the cut open, then close to chop
Developer claimed: The developer, ariberko, in the project's README on GitHub: close the iPhone Duo to cut an object, then open it again to compare the weight of the pieces.
Blaine Miller
A private social app for small circles, with a centered, readable feed on the open Duo
Developer claimed: The developer, in the changelog for Haven 2.0.2 on GitHub (October 14, 2026): Duo support, with a centered column on the open display. The App Store release notes for version 2.0.2 (released October 15, 2026) say it is optimized for iPhone Duo.
Rui Ying
Tsinghua course access, with its two-pane layout back on for the open Duo
Developer claimed: The developer, in a change to the learnX code on GitHub on October 14, 2026, titled "Re-enable native split view on iPhone Duo", which lifts the restriction of the two-pane layout to iPad and Mac. The App Store release notes for version 18.0.0 (released October 15, 2026) add support for iPhone Duo.
Mama Bloom UG (haftungsbeschrankt)
One safe-to-spend number, beside its details in two columns when open
Developer claimed: The developer, in the App Store release notes for version 1.1: unfold the phone and the app opens into two columns, with the safe-to-spend number beside its detail; fold it again and you carry on where you left off.
SwiftLee
Shrink the videos in Photos, with details beside the compression settings when open
Developer claimed: The developer, in the App Store release notes for version 1.3.0: open, the layouts read like a book, with a video's details beside the compression settings, and the onboarding result separates the comparison from its actions.
Mert Emek
A calm subway-routing puzzle with board and controls side by side open flat
Developer claimed: The developer, in the release notes for version 1.0.5 (released October 9, 2026), which say it is optimized for the foldable Duo. There are no pictures of it on the Duo yet. The App Store seller is MERT EMEK (id 6761668749).
Noriaki Misawa
Old Maid for two across the fold, each player on their own half
Developer claimed: The developer, in the release notes for version 1.3 (released October 10, 2026), which describe a face-to-face mode for the open Duo, and in a post on X on October 10, 2026 (@nmisawa on X), saying the Duo version passed review and is out. There are no pictures of it on the Duo yet. The App Store seller is Noriaki Misawa (id 6811594849).
OurCal Ltd.
A shared calendar with a chat for every event, the month beside the day open flat
Developer claimed: The developer, posting as OurCal on X on October 10, 2026, with a picture of the app open flat on iPhone Duo (@onin on X), and in the notes for version 2026.10.9 on its website (ourcal.com), which say the team had early access to the Duo. The App Store release notes for 2026.10.9 (released October 10, 2026) list it too: "Ready for iPhone Duo — Open it up and the day's agenda appears beside the calendar." The seller is OurCal Ltd.
Altive Inc.
Half-folded, your stock sits in a grid beside the item you picked
Developer claimed: The developer, 村松龍之介 (@riscait) of Altive, posted a screenshot of Nokoris (ノコリス) in the iPhone Duo's book posture on X. The App Store seller is Altive Inc. (id 1523128250). Version 3.17.0 (released October 1, 2026) does not mention the Duo, and neither does the description.
daichi suyama
A day's Swarm check-ins beside the route between them on a map
Developer claimed: The app's X account (@swarmlytics) posted a screenshot of Swarmlytics on the open iPhone Duo and said Duo support is in progress (@swarmlytics on X). The App Store seller is daichi suyama (id 6766743893), on the Japanese App Store. Version 3.0.0 (released September 29, 2026) does not mention the Duo, and neither does the description.
Mayur Patil
The forecast on the left, sun times and hourly bars on the right
Developer claimed: The developer, Mayur Patil (@zephyrwala), posted a photo of WeatherGlow on the open iPhone Duo in the simulator (@zephyrwala on X). The App Store seller is Mayur Patil (id 6451098166). Version 1.70 (released October 3, 2026) does not mention the Duo, and neither does the description.
Uros Stojanovic
Car photo on one half, paint and wheel tools on the other
Developer claimed: The Car Editor YouTube channel shows the app open on the Duo (youtube.com). The App Store page does not mention the Duo yet.
Maavu Technologies Inc.
A fuel form that fits one half beside Safari on Duo
Developer claimed: Nitin Alabur, the developer (Maavu Technologies), in a post on X showing Click2Track in Split View beside Safari on the open Duo, before and after fixing its two-pane layout (@nitinalabur on X). The App Store seller is Maavu Technologies Inc. (id 6757174917). The release notes for version 1.1 (released October 10, 2026): "Updated layouts for iPhone Duo make it easier to view fuel-entry controls alongside your photos."
Axixi (健 耿)
A game controller tester laid out again for the Duo's cover and inner display
Developer claimed: The App Store release notes for version 1.0.4 say: "Improved layouts and navigation across iPhone Duo configurations." The maker, 阿西西 (Axixi), shows the app on the Duo in a Bilibili video (bilibili.com). The App Store seller is 健 耿, whose site axixi.top lists the app.
Karan Pandya
Your program, logging and coach beside each other, with tabs in a side rail
Developer claimed: The developer, Karan Pandya, posted three screens of Liftr on the open Duo while readying it for iPhone Duo (@karanpmb on X). The App Store page doesn't mention the Duo yet.
donnywals.com BV
Exercise list on the Duo cover
Developer claimed: Donny Wals posted an early Duo cover shot of Maxine, asking how to keep the filter chips from running under the tab rail (@DonnyWals on X).
Kitta Co.
Chats on the cover, with folders and tabs in a rail down the side
Developer claimed: ieb (@CyberHono on X), the developer, in a post saying Mithka 1.5.5 adapts to the iPhone Duo, with a screenshot of the cover (@CyberHono on X). The 1.5.5 release notes on the App Store do not mention the Duo.
Mindzone Technologies
A room's one-tap pings beside what was sent, on the open Duo
Developer claimed: Mahdi, who is building PingRoom, posted it on the open Duo while optimizing the app for iPhone Duo (@MahdiSPHP on X). The App Store page doesn't mention the Duo yet.
Axixi (健 耿)
Remote play for a PS5 or PS4, laid out again for the Duo's cover and inner display
Developer claimed: The App Store release notes for version 1.2.5 say: "Improved iPhone Duo support and portrait/landscape layouts." The maker, 阿西西 (Axixi), shows the app on the Duo in a Bilibili video (bilibili.com). The App Store seller is 健 耿, whose site axixi.top lists the app.
Axixi (健 耿)
PC streaming with the stream on the top half and a keyboard or trackpad below
Developer claimed: The App Store release notes for version 1.2.1 say: "Adapted the interface, full keyboard, and settings layouts for iPhone Duo." The maker, 阿西西 (Axixi), shows the adapted app in a Bilibili video (bilibili.com). The App Store seller is 健 耿, whose site axixi.top lists the app.
DeFi Suisse AG
A crypto wallet with a Pro trading desk laid out for the open Duo
Developer claimed: THORWallet, in a post on X and on its Pro desk page (thorwallet.org), says the desk for iPhone Duo goes live on October 23. The App Store text doesn't mention iPhone Duo.
Haozes (家浩 汪)
Hiking app with the trail map on one half of the open Duo and the stats on the other
Developer claimed: Haozes, the developer, in a post on X with a picture of Tooboo on the open iPhone Duo (@Haozes2 on X), saying the same approach also suited the iPad app. The App Store release notes for 1.5.19 (released October 17, 2026) don't mention the Duo.
Axixi (健 耿)
Apple TV mirroring and remote; open upright, the buttons above and a D-pad below
Developer claimed: The App Store release notes for version 1.0.4 say: "Improved iPhone Duo support and portrait/landscape layouts." The maker, 阿西西 (Axixi), shows the app on the Duo in a Bilibili video (bilibili.com). The App Store seller is 健 耿, whose site axixi.top lists the app.
Ledworks srl
Smart-light effects laid out across the Duo's inner display
Developer claimed: Twinkly (@TwinklyLED) posted a promo image of Twinkly on the iPhone Duo, with its effects library on the inner display beside the Duo's side rail (@TwinklyLED on X).
Chaoyang Minimal Software Studio
Flip clock themes; on the open Duo, local time and a world-city board side by side
Developer claimed: vulgur wrote in an indie-dev weekly log on V2EX, under the heading for 极简时钟 (Zen Flip Clock) iOS, that most of the week went into adapting the app's dozen-plus themes for the Duo's inner and outer screens in both orientations, and posted an inner-screen screenshot (v2ex.com). The App Store release notes for the current version (4.15.0, released October 10, 2026) say only "Ready for iPhone Duo."
Device details, CPU and network graphs side by side on the open Duo
Developer claimed: The developer account @DeviceKitUS posted a video of Device Kit on the open Duo and said the app supports iPhone Duo (@DeviceKitUS on X). The App Store release notes for version 2.1.1 (released October 10, 2026) say "Adapted to the new UI layout of iPhone Duo"; they don't describe the layout.
DoorDash
Food and grocery delivery. Apple says a larger delivery map is coming later this year
Developer claimed: Apple, in its Newsroom article of October 22, 2026, on apps for iPhone Duo, which says DoorDash "will make it easy to track a delivery on a larger map later this year." The App Store release notes for version 8.42.0 (released October 26, 2026) don't mention the Duo.
cynq ventures
A timeline of every subscription on one half, what they all cost on the other
Developer claimed: Sid Dai, in a reply on X with a picture of Duefolio open on the iPhone Duo, saying the Duo version is being readied (@SiddhuDai on X). The App Store page does not mention the Duo yet.
泽生 李
Talk to the AI agents on your computer from the open Duo
Developer claimed: The developer (@libapi_ on X) posted a render of Ekko Studio on the open Duo and said it is adapted for phones, tablets and foldables (@libapi_ on X). The App Store page doesn't mention the Duo yet.
Markus Fischnaller
The day's plans beside the family's month on the open Duo
Developer claimed: The app's account (@southtyrolpool on X) said Famalio is ready for iPhone Duo and submitted, with a screenshot of it on the open Duo (@southtyrolpool on X).
Michal Ferak
Trip plans and packing lists, with the route map across the open Duo and the plan below
Developer claimed: Michal Ferák, the developer, in a reply on X with a screenshot of journeybot on the open iPhone Duo, saying journeybot is being readied for the Duo (@MikeFerak on X). The App Store page does not mention the Duo yet.
Microsoft
Microsoft's email and calendar. Apple says a Duo version is coming in the next few weeks
Developer claimed: Apple, in its Newsroom article of October 22, 2026, on apps for iPhone Duo, which says Outlook "will roll out" a Duo version in the coming weeks. The App Store release notes for version 5.2642.0 (released October 26, 2026) don't mention the Duo.
Microsoft
Microsoft's word processor. Apple says a Duo version is coming in the next few weeks
Developer claimed: Apple, in its Newsroom article of October 22, 2026, on apps for iPhone Duo, which says Word "will roll out" a Duo version in the coming weeks. The App Store release notes for version 2.115.1 (released October 26, 2026) don't mention the Duo.
Elad Kishon
The day's itinerary on one half, its route on the map beside it
Developer claimed: The developer, Elad Kishon, said on X that they rebuilt NomadPoint around the Duo's two panes, with a picture of it on the open Duo (@eladthebuilder on X). The App Store page doesn't mention the Duo yet.
James Cheseborough
Session list on one half, running totals on the other
Developer claimed: The developer (@JimChezchez on X) posted a first look of Poker Money Tracker on the Duo with a master-detail open layout (@JimChezchez on X).
Pawel Kaczmarek
Your dog's health score beside its walk, sniff and poop ratings when the phone is open
Developer claimed: Pawel Kaczmarek, who founded Tails (per trytails.com), in a reply on X with a picture of Tails on the open iPhone Duo, saying the new build goes in for review today (@Super_PK_ on X). The App Store page does not mention the Duo yet.
Bader Alabbasi
Today's workout beside your programme on the open Duo
Developer claimed: The developer (@snowmoon_ on X) posted Tiqan on the open Duo and said it is getting ready for iPhone Duo (@snowmoon_ on X).
HoYoverse
HoYoverse's action RPG, getting controls for every way you hold the Duo next month
Developer claimed: Apple, in its Newsroom article of October 22, 2026, on apps and games for iPhone Duo, which says the game "will be updated for iPhone Duo next month". The App Store release notes for version 3.3.0 (released October 20, 2026) don't mention the Duo.
Nix Zhu
A Mastodon client whose tabs and buttons move to the bar down the Duo's cover
Developer claimed: Nix Zhu, the developer, in a Mastodon post with four screenshots of the closed iPhone Duo, calling it initial support for the Duo (mastodon.social). The App Store seller is listed as 宏旭 朱. The release notes for version 0.32 (released October 17, 2026) say "Initial support for the iPhone Duo."
Moshi Tech Ltd.
Agent terminal whose workspaces sit beside chat and files on a Duo-sized screen
Developer claimed: IndiJo (Moshi), in a post on X showing Moshi 3.15.6 on an iPad mini standing in for the iPhone Duo, with workspaces beside a task and chat pane.
Rudrank Riyam
Apple Music stations, the artwork on one half of the fold and the track list on the other
Developer claimed: Rudrank Riyam, the developer, in Bluesky posts showing Presset on the iPhone Duo simulator and calling it a first attempt at designing for the Duo (bsky.app). The App Store page does not mention the Duo.
Mikhail Pak
Say a purchase on one half, check the entries on the other
Developer claimed: The developer, in a post in r/iosapps saying version 1.7 shipped with iPhone Duo support and uses the full inner screen (reddit.com). The post links this App Store page.
Pandamonia LLC
Backgammon whose wooden board folds at its own hinge, right where the Duo folds.
Developer claimed: Pandamonia, in a Bluesky post (bsky.app) saying iPhone Duo support is coming. Not shipped yet.
Oluwaseun Akintade
Font library on one half, live preview and pairs on the other.
Developer claimed: Oluwaseun Akintade (@tadeDev_), in a post on X. The App Store seller is Oluwaseun Akintade, whose site tade.dev is also the X profile's link. The post shows Fonti running across the open Duo.
Joe Kimberlin
Game collection tracker with full-height cover art on the left of the open Duo.
Developer claimed: Joe Kimberlin, on Bluesky (bsky.app), showing a sneak peek of the new layout Joe plans to release with Duo support. The App Store seller is Hidden Key LTD; Joe's profile links gametrack.app.
Karmjit Singh
Offline music player with the tape on one side and Up Next on the other.
Developer claimed: The developer, via @Offlyapp, in a post on X. That account links this App Store page. The post says Duo support is on the way and shows a two-pane player.
DannyVFilms
A self-hosted media diary being adapted for Duo
Developer claimed: DannyVFilms, the developer, in a comment in the r/iPhoneDuo app showcase thread on Reddit, which describes adapting Floppy to the iPhone Duo's screen sizes. A follow-up says more screens still need optimizing. Floppy is a self-hosted web app, not an App Store release. Specific fold adaptations are not yet documented.
Brent Simmons
An RSS reader whose makers say version 7.2 supports the Duo
Developer claimed: The NetNewsWire team, in a blog post on October 16, 2026, which says the app's standard controls adapted to the Duo after it was rebuilt with Apple's new developer tools, and that Brent Simmons had not tried the Duo simulator before release. The App Store lists version 7.2 (released October 16, 2026), with Brent Simmons as the seller, but its release notes don't mention the Duo. The team's picture gallery shows ordinary iPhone and iPad layouts. Specific fold adaptations are not yet documented.
Hemal Modi
An aircraft and star map that uses the Duo's whole inner display
Developer claimed: Hemal Modi, the developer, in the App Store release notes for version 2.3.1 (released October 6, 2026), which say the app uses the full inner display with fold-aware layouts. The notes for version 2.3.2 add Duo screenshots. Specific fold adaptations are not yet documented.
Getzemani Cruz Garcia
A retro-game launcher that lists the iPhone Duo among devices that can run Mario Galaxy
Developer claimed: Getzemani Cruz Garcia, the developer, in the App Store release notes for version 2.9.7 (released September 23, 2026), which list iPhone Duo among the newer devices that can run Mario Galaxy in the app. That is a compatibility note, not a description of a fold-aware layout. Specific fold adaptations are not yet documented.
Patrick Gruben
A dog-care island game, updated in version 1.2.0 for iPhone Duo
Developer claimed: Patrick Gruben, the developer, in the App Store release notes for version 1.2.0 (released October 12, 2026), which announce full support for iPad and iPhone Duo along with the fall update's other changes. The App Store pictures don't show the Duo. Specific fold adaptations are not yet documented.
A rubber chicken that squeals when you fold the phone
Developer claimed: 政宏 吴, the developer, in the App Store description for version 1.0 (released October 14, 2026), which says that folding the phone squishes the chicken and opening it brings it back to normal. Specific fold adaptations are not yet documented.
EMMO Corp.
An infinite notebook whose editor, toolbars and pen box adapt to the Duo
Developer claimed: EMMO Corp., the developer, in the App Store release notes for version 5.1.6 (released October 16, 2026), which adapt the editor, toolbars and pen box to iPhone Duo without saying where they go. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
Med ART Studios LLC
Feeding, sleep and milestone logs from Sprout, with more room on the iPhone Duo
Developer claimed: Med ART Studios, the developer, in the App Store release notes for version 16.6 (released October 10, 2026), which optimize the app for iPhone Duo with more room for routines and milestones. The App Store pictures show ordinary iPhones. Specific fold adaptations are not yet documented.
HE HE
An airline game that switches between cockpit and cabin as the flight turns chaotic
Developer claimed: The developer, in the App Store release notes for version 1.5.2, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
LVL35 LLC
A native FreeScout helpdesk with offline replies and support notifications
Developer claimed: The developer, in the App Store release notes for version 6.10.06, which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
Hibombo - A Creative Helping Hand AB
A river-building puzzle game that keeps playing as the Duo folds
Developer claimed: The developer, posting as hib0mbo on Reddit: the Duo version was approved, and in the simulator the game keeps running while its layout adapts as the phone folds. App Store version 2.2.1 (released October 1, 2026) doesn't mention the Duo. Specific fold adaptations are not yet documented.
迪远 王
Collect Water Margin heroes as digital cards with shimmering foil effects
Developer claimed: The developer, in the App Store release notes for version 1.1.3, which add iPhone Duo support without describing the layout. The current version, 1.2.0, adds card-opening sounds and new special-move cards. Specific fold adaptations are not yet documented.
SixTwelve Studio (Zeeshan Khan)
A twelve-shot film camera, with a waist-level layout for the half-folded Duo
Developer claimed: The developer, on its website and in the App Store release notes for version 1.1.0: half-folded, the finder sits above the controls, and closing the phone finishes loading a roll. The current version, 1.1.1, adds accessibility changes. The App Store screenshots show ordinary iPhones. Specific fold adaptations are not yet documented.
Matteo Dall'Ombra
Movie and TV watchlists with episode progress, updated for the Duo
Developer claimed: The developer, in the App Store release notes for version 2026.10.8, which say "Support for Duo" without describing the layout. The App Store screenshots show ordinary iPhones. Specific fold adaptations are not yet documented.
VizMystech LLC
Walking grows crops that feed a virtual pet, with layouts for both Duo displays
Developer claimed: The developer, on its website and in a comment on Reddit: the interface is made for the Duo, with layouts for the cover and the open display. The App Store version, 1.1 (released October 18, 2026), has no Duo release note. Specific fold adaptations are not yet documented.
Momenta B.V.
Notes linked to calendar events and projects
Developer claimed: The developer, in the App Store release notes for version 23.4: closed, the controls sit at the side; half-folded, the notes sit beside the sidebar. The notes for the current version, 23.4.1, fix a Community login error and don't repeat the Duo notes. Specific fold adaptations are not yet documented.
Tsingtao TikTok Information Technology Company Limited
Face-changing photo effects, with a landscape layout for the Duo
Developer claimed: The developer, in the App Store release notes for version 4.7.0, which add an iPhone Duo landscape layout without describing it. The notes for version 4.6.0 (October 3, 2026) say the app is optimized for the Duo's display. Specific fold adaptations are not yet documented.
TRIPICAL VIET NAM LIMITED LIABILITY COMPANY
AI chat, image, video and speech generation in one app
Developer claimed: The developer, in the App Store description archived on October 7, 2026, which listed "iPhone Duo & iPad supported" without describing a layout. The current App Store description no longer mentions the Duo. Specific fold adaptations are not yet documented.
Ammar Bhaisaheb
Prayer times and Quran reading, with more room when the Duo opens
Developer claimed: The developer, in the App Store release notes for version 2.0 (released September 26, 2026), which name the iPhone Duo: the redesigned interface shows more content when the phone opens or rotates. Version 2.1 repeats the claim; the current version is 2.2. Specific fold adaptations are not yet documented.
Redeye Game
A 3D puzzle: rotate the shape and tap its arrows away, optimized for the Duo
Developer claimed: The developer, in the App Store release notes for version 1.3.14, which say "Optimized for iPhone Duo" without describing the layout. The App Store seller is Shenzhen Redeye Information Technology Co., Ltd. Specific fold adaptations are not yet documented.
Sanjiv Sathiah
A local music player, with separate layouts for the open and closed Duo
Developer claimed: The developer, in the App Store release notes for version 2.1.1, which claim native iPhone Duo support. The app's website describes separate layouts for the open and the closed Duo, but still labels them development previews of version 2.0. The app credits DIGITAL x DESIGN. Specific fold adaptations are not yet documented.
Robert Hurley
A rest tracker that furnishes a pixel bedroom, with room and stats apart on the Duo
Developer claimed: The developer, in the App Store release notes for version 3.10.1: open, the Duo shows the room on one side of the fold and your stats on the other. Specific fold adaptations are not yet documented.
Mark Linthicum
Radio and podcast alarms, updated for the Duo
Developer claimed: The developer, in the App Store release notes for version 9.2.2 (released October 1, 2026), which add iPhone Duo support without describing the layout. Specific fold adaptations are not yet documented.
David Platt
Camera photo imports, with controls adapted to the Duo's cover and open display
Developer claimed: The developer, in the App Store release notes for version 3.7: the import controls and settings adapt to the Duo's cover display and to the open display. Specific fold adaptations are not yet documented.
Redeye Game
A logic puzzle about placing cats that mustn't touch, optimized for the Duo
Developer claimed: The developer, in the App Store release notes for version 1.1.18, which say "Optimized for iPhone Duo" and joke about opening the fold without describing a layout. The App Store seller is Shenzhen Redeye Information Technology Co., Ltd. Specific fold adaptations are not yet documented.
Thierry Maeder
A chess game and trainer with a bigger board and side controls on the open Duo
Developer claimed: The developer, in the App Store release notes for version 1.9.0 (released October 14, 2026): open, the Duo takes the iPad layout, with a sidebar of modes and a detail column, and the board takes the full height; the sidebar steps aside during play, analysis and training, and the controls move to the right of the board whenever the display is wider than tall. Closed, it stays in portrait like on any iPhone. The same notes are in the app's source code. Specific fold adaptations are not yet documented.
Natalia Andrzejewski
A reader for dyslexia, with layouts previewed for each Duo pose
Developer claimed: The developer, on its website with a device video on October 13, 2026: layouts for the closed, partly folded and open Duo. The video combines screen captures with outlines of the device. The App Store version, 3.0 (released October 14, 2026), doesn't mention the Duo. Specific fold adaptations are not yet documented.
forScore LLC
Read and organize PDF sheet music, updated for the Duo
Developer claimed: The developer, in an announcement on its website on October 8, 2026, which brings iPhone Duo support to forScore. The App Store release notes for version 15.2.5 (released October 8, 2026) mention only the latest Apple devices, not the Duo. Specific fold adaptations are not yet documented.
forScore LLC
A remote for forScore on nearby devices, included in the developer's Duo updates
Developer claimed: The developer, in an announcement on its website on October 8, 2026, which includes forScore Cue among its iPhone Duo updates. The App Store release notes for version 3.1 (released October 8, 2026) mention only the latest Apple devices, not the Duo. Specific fold adaptations are not yet documented.
Oleksandr Bondar
Track feeds, sleep and everyday baby care, optimized for the Duo
Developer claimed: The developer, in the App Store release notes for version 1.34 (released September 23, 2026), which say the app is optimized for iPhone Duo without describing the layout. The current version is 1.34.6. Specific fold adaptations are not yet documented.
forScore LLC
A metronome for music practice, included in the developer's Duo updates
Developer claimed: The developer, in an announcement on its website on October 8, 2026, which includes Modus among its iPhone Duo updates. The App Store release notes for version 4.4 (released October 8, 2026) mention only the latest Apple devices, not the Duo. Specific fold adaptations are not yet documented.
forScore LLC
A pitch pipe for finding a starting note, part of forScore's Duo updates
Developer claimed: The developer, in an announcement on its website on October 8, 2026, which includes Onyx in its iPhone Duo updates without describing the layout. The App Store release notes for version 4.5 (released October 8, 2026) mention only the latest Apple devices, not the Duo. Specific fold adaptations are not yet documented.
JESUS SANZ PEREZ / Quackbyte
A text editor for notes and code, with a resizable preview on the Duo
Developer claimed: The developer, in the App Store release notes for version 1.5 (released September 21, 2026): the writing and preview panes resize to fit, with a movable divider and the controls kept within reach. The developer's website calls the studio Quackbyte. The current version is 1.7. Specific fold adaptations are not yet documented.
teruaki yamada
A photo browser that keeps your selection as the Duo opens or closes
Developer claimed: The developer, in the release notes for version 1.1.5: views switch more smoothly as the Duo opens or closes, and the chosen photo or video stays selected between one and two panes. The current App Store description and the 1.1.6 notes don't mention the Duo. Specific fold adaptations are not yet documented.
David Margot
A retro emulator with the game above its controls when half-folded
Developer claimed: The developer, in the App Store release notes for version 3.0: half-folded, the game sits above its controls, or beside them when the Duo is turned the other way; unfolding keeps the same game running. Specific fold adaptations are not yet documented.
Routine
Tasks, calendars and notes in one app, with Duo support in Routine 3.0
Developer claimed: The developer, in an announcement on October 5, 2026 for version 3.0, which adds iPhone Duo support without describing the layout. The App Store release notes don't name the Duo. Specific fold adaptations are not yet documented.
平 王 / MileeApp
Daily reflections, moods and photos, with layouts for the Duo from closed to open
Developer claimed: The developer (MileeApp), in the App Store release notes for version 1.0.3 (September 29, 2026) and the Today, Unfolded event, which adapt the app to the Duo from closed to fully open and mention half-open use, without describing the layout. The current version is 1.0.4. Specific fold adaptations are not yet documented.
家龙 李
Records and replays your routes, optimized for the Duo
Developer claimed: The developer, in the App Store release notes for version 2.2.7 (released October 7, 2026), which say it is optimized for iPhone Duo without describing the layout. The notes for version 2.2.6 had previewed a map-and-timeline layout and recording controls when half-folded. Specific fold adaptations are not yet documented.
forScore LLC
An instrument tuner, part of forScore's Duo updates
Developer claimed: The developer, in an announcement on its website on October 8, 2026, which includes TuneWave in its iPhone Duo updates without describing the layout. The App Store release notes for version 2.4 (released October 8, 2026) mention only the latest Apple devices, not the Duo. Specific fold adaptations are not yet documented.
UpNote Company Limited
Notes, journals and linked notebooks, optimized for the Duo
Developer claimed: The developer, in the App Store release notes for version 9.22.9, which say "Optimized UpNote for iPhone Duo" without describing the layout. The App Store seller is UpNote Pte. Ltd. Specific fold adaptations are not yet documented.
UTM contributors
Virtual machines, with Duo toolbars and a keyboard and touchpad deck below the screen
Developer claimed: UTM's maintainer, osy, in merged GitHub pull request 7911, which adds iPhone Duo layouts and reports automated simulator checks but says no person has tried them yet. These changes are in UTM 5.0.8 (released October 16, 2026), whose release notes say "Fold your iPhone Duo like a laptop, and the bottom half becomes a keyboard or touchpad for your VM." The App Store's UTM SE 5.0.8 (released October 21, 2026) has the same line. Specific fold adaptations are not yet documented.
Lee Edwards
A Star Wars Unlimited match log with timers facing each player on the partly folded Duo
Developer claimed: The developer, in the App Store release notes for versions 1.22.100 and 1.22.102 (released October 13, 2026): partly folded, life-counter panels and setup windows face each player, with separate controls on each side of the fold; open flat, the players share one set. Specific fold adaptations are not yet documented.
Josh Fenton
A Christmas countdown with seasonal scenes and animals to collect, optimized for the Duo
Developer claimed: The developer, in the App Store release notes for version 2026.15 (October 6, 2026), which say it is optimized for iPhone Duo without describing the layout. The current version is 2026.19 (released October 16, 2026), whose notes don't mention the Duo. Specific fold adaptations are not yet documented.
Eray Endes
An Islamic Q&A and prayer-times app, with screens redesigned for each Duo pose
Developer claimed: The developer, in the App Store release notes for version 2.0.1: the screens are redesigned for each iPhone Duo pose. The notes don't describe the layouts. Specific fold adaptations are not yet documented.
Static Fire Technology Co., Ltd.
An ebook read-aloud app with its reading page adjusted for the Duo
Developer claimed: The developer, in the App Store release notes for version 1.7.5: the reading page is adjusted for iPhone Duo. The notes don't describe the layout. Specific fold adaptations are not yet documented.
Christopher Hefferman
A drone pilot's airspace map and forecast, with layout fixes for the Duo
Developer claimed: The developer, in the App Store release notes for version 8.1.7, which include layout fixes for iPhone Duo without describing them. Specific fold adaptations are not yet documented.
Swifty Bits LLC
A year of habits on a calendar, with Duo layout fixes
Developer claimed: The developer, in the App Store release notes for version 2026.41.0, which include layout fixes for iPhone Duo without describing them. Specific fold adaptations are not yet documented.
行滨 于
A minimal journal by year, month, week and day, optimized for the Duo
Developer claimed: The developer, in the App Store release notes for version 1.9.2, which say the app is optimized for iPhone Duo without describing the layout. Specific fold adaptations are not yet documented.
Daniil Bolotov
An ADHD timer and task pet that fills the open Duo, sideways too
Developer claimed: The developer, in the App Store release notes for version 1.14.0: the app fills the open Duo's big screen, sideways too. Specific fold adaptations are not yet documented.
Passport App LLC
A profile of the games, films, shows and music you love, with Duo layout improvements
Developer claimed: The developer, in the App Store release notes for version 1.4.2, which include layout improvements for iPhone Duo without describing them. Specific fold adaptations are not yet documented.
MEDIA CONCEPT
A video player for your library, network shares and media servers, optimized for the Duo
Developer claimed: The developer, in the App Store release notes for version 2.2.1, which list optimizations for iPhone Duo without describing them. Specific fold adaptations are not yet documented.
Halim Ozturk
A household budget in two columns on the open Duo, compact on the cover
Developer claimed: The developer, in the release notes for version 1.7.4 (released October 10, 2026): "Built for iPhone Duo. On the open display your budget spreads across two columns, so you can see your overview and details side by side. On the cover display everything stays compact and easy to read." There are no pictures of it on the Duo yet. The App Store seller is Halim Ozturk (id 6747974396). Specific fold adaptations are not yet documented.
Priye Singh
One readiness score from Apple Health, with two-up cards on the open Duo
Developer claimed: The developer, in the release notes for version 4.1.3 (released September 23, 2026): "Ready for iPhone Duo. Same scores, layouts built for both displays." Compact dashboard cards sit side by side on the inner screen while charts keep the full width; on the cover, onboarding, the Today header and key screens are laid out around the Dynamic Island, where the Recovery Battery Live Activity shows. There are no pictures of it on the Duo yet. The App Store seller is Priye Singh (id 6760609127). Specific fold adaptations are not yet documented.
Koya Hirose
A clean month, week and day calendar, now supporting the Duo
Developer claimed: The developer, in the release notes for version 27.2.0 (released October 10, 2026): "Added support for iPhone Duo." The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is Koya Hirose (id 6746424742). Specific fold adaptations are not yet documented.
Matt Birchler
A podcast chapters and transcripts toolkit, now supporting the Duo
Developer claimed: The developer, Matt Birchler, in the release notes for version 2.3 (released October 10, 2026): "iPhone Duo support"; and on Birchtree, the developer's blog, on October 11, 2026, in a roundup of app updates that lists "Full iPhone Duo support" for Chapterize (birchtree.me). Neither describes the layout. There are no pictures of it on the Duo yet. The App Store seller is Matt Birchler (id 6757309769). Specific fold adaptations are not yet documented.
天宇 高
An e-book reader for EPUB, Kindle formats and PDF, updated for the Duo
Developer claimed: The developer, in the release notes for version 1.4.0 (released October 10, 2026), which list "Added support for iPhone Duo" among other changes, and also add an option to turn off two-column layout. The notes say nothing more about the Duo. There are no pictures of it on the Duo yet. The App Store seller is 天宇 高 (id 6770067434). Specific fold adaptations are not yet documented.
kazuhiro aonuma
A contact lens replacement reminder with a new interface for the Duo
Developer claimed: The developer, in the release notes for version 2.3.0 (released October 10, 2026): "Added a UI for iPhone Duo." The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is kazuhiro aonuma (id 1538614122). Specific fold adaptations are not yet documented.
Shanghai Jupeng Technology Co., Ltd.
A DJ mixing app with a layout for the Duo
Developer claimed: The developer, in the release notes for version 1.4.2 (released October 10, 2026): "Supports iPhone Duo layout." There are no pictures of it on the Duo yet. The App Store seller is shanghai jupeng technology Co.,Ltd (id 6483105449). Specific fold adaptations are not yet documented.
Droplist LTD
A sneaker release calendar with drops beside their details when open
Developer claimed: The developer, in the release notes for version 5.0.8 (released October 10, 2026): "Droplist now supports iPhone Duo, so you can unfold it to see the drops and their details side by side." There are no pictures of it on the Duo yet. The App Store seller is Droplist LTD (id 1425619487). Specific fold adaptations are not yet documented.
Berkay Egeli
A typewriter: paper on one half, keys on the other, and folding it archives the page
Developer claimed: The developer, in the App Store description for version 1.0.1 (released October 10, 2026), which said DuoType is "built first for iPhone Duo": open, paper and lamp sit on one half and the keyboard on the other; folding it shut archives the page and the cover shows the last line typed and the page count; and the typewriter adapts to tabletop, flat and book on the Duo. The current version, 1.0.2, doesn't mention the Duo in its description or release notes. There are no pictures of it on the Duo yet; the App Store screenshots show an iPhone and an iPad. The App Store seller is Berkay Egeli (id 6821094612). Specific fold adaptations are not yet documented.
Sviatoslav Belmeha
A budget and expense tracker with a side-by-side home screen on the Duo
Developer claimed: The developer, in the release notes for version 2.9 (released October 11, 2026): "Side-by-side Home on iPhone Duo." There are no pictures of it on the Duo yet. The App Store seller is Sviatoslav Belmeha (id 1669548999). Specific fold adaptations are not yet documented.
Rebecca Skinner
A prank that fakes a cracked screen and sound effects when you fold the phone
Developer claimed: The developer, in the release notes for version 1.3 (released October 10, 2026): "iPhone Duo support! It's like this app was made for it!! Prank your friends by folding your phone and watching the screen crack and sound effects respond." There are no pictures of it on the Duo yet. The App Store seller is Rebecca Skinner (id 6807880115). Specific fold adaptations are not yet documented.
Goateraction
Gomoku against the computer, a friend or online, improved for the Duo
Developer claimed: The developer, in the release notes for version 3 (released October 10, 2026): "Improved the experience on iPhone Duo." The notes say nothing more. There are no pictures of it on the Duo yet. The App Store seller is Goateraction (id 6813725997). Specific fold adaptations are not yet documented.
Itzhak Adam Benahron
A social app for local car meets, with Duo support promised
Developer claimed: Idle's account on X, on October 11, 2026: "We're putting the finishing touches on iPhone Duo support for Idle, targeting day one with our next update." (@Idlemeets on X). Support is promised, not shipped: the current version, 1.3.4 (released October 19, 2026), doesn't mention the Duo, and the post's image is a text card. There are no pictures of it on the Duo yet. The App Store seller is Itzhak Adam Benahron (id 6762639080). Specific fold adaptations are not yet documented.
6X Studio LLC
Lock Screen widgets that open apps and shortcuts, ready for the Duo's wider screen
Developer claimed: The developer, in the release notes for version 2.1.8 (released October 10, 2026), whose "Recent Updates" list includes "New: Ready for the foldable iPhone Duo and its wider screen". Nothing says what changes on the Duo. There are no pictures of it on the Duo yet. The App Store seller is 6X Studio LLC (id 1636719674). Specific fold adaptations are not yet documented.
Hirotaka Watanabe
A cue player for presenting photos, video and PDFs on an external screen
Developer claimed: The developer, in the release notes for version 2.1 (released October 9, 2026): "Added support for iPhone Duo." The notes say nothing more. There are no pictures of it on the Duo yet. The App Store lists the developer as Polylize. The App Store seller is Hirotaka Watanabe (id 6777586459). Specific fold adaptations are not yet documented.
CLMS Studio LLC
A paycheck-by-paycheck budget with a side rail closed and a sidebar open
Developer claimed: The developer, in the release notes for version 3.1.0 (released October 10, 2026), which say Pebble is made for iPhone Duo: a tab rail along the edge when folded, a sidebar when open, and an open form, what you typed and your place all kept when you fold or unfold. There are no pictures of it on the Duo yet. The App Store seller is CLMS Studio LLC (id 6763922179). Specific fold adaptations are not yet documented.
Daniel Storm
A daily quote that fits the phone open, closed and in between
Developer claimed: The developer, in the release notes for version 26.45.0 (released October 9, 2026), which introduce foldable support: the daily quote "looks great open, closed and everywhere in between". The Duo isn't named. There are no pictures of it on the Duo yet. The App Store seller is Daniel Storm (id 653287635). Specific fold adaptations are not yet documented.
Matt Birchler
On-device transcripts and subtitle files from audio and video, ready for the Duo
Developer claimed: The developer, Matt Birchler, in the release notes for version 3.3 (released October 10, 2026): "Ready for the iPhone Duo", and on the Birchtree blog on October 11, 2026 (birchtree.me). There are no pictures of it on the Duo yet. The App Store seller is Matt Birchler (id 6747410609). Specific fold adaptations are not yet documented.
Ke Tong
A silent camera that fills the Duo inner display and keeps photos the right way up
Developer claimed: The developer, in the release notes for version 1.4.0 (released October 11, 2026): "Optimized for iPhone Duo — full-screen camera on the inner display; the preview, photos, videos and level follow the screen orientation." There are no pictures of it on the Duo yet. The App Store seller is Ke Tong (id 6785767290). Specific fold adaptations are not yet documented.
Hamdouchi Interactive, LLC
Learn the 33 Cyrillic letters; open, cards and quiz results spread across the Duo
Developer claimed: The developer, in the release notes for version 3.9 (released October 9, 2026): made for iPhone Duo, everything fits the outer screen closed, and the alphabet, cards and quiz results spread across the inner screen open, keeping your place when you fold. There are no pictures of it on the Duo yet. The App Store seller is Hamdouchi Interactive, LLC (id 389927786). Specific fold adaptations are not yet documented.
Tim Brown
A classic-book reader built around vertical swiping, updated for the Duo
Developer claimed: The developer, in the release notes for version 1.4.16 (released October 10, 2026): "We've made improvements across the app, including iPhone Duo support." The current version, 1.4.17 (released October 11, 2026), doesn't mention the Duo. There are no pictures of it on the Duo yet. The App Store seller is Tim Brown (id 6761863067). Specific fold adaptations are not yet documented.
Raphael Lesourd
A live earthquake map with layouts for the half-folded and standing Duo
Developer claimed: The developer, in the release notes for version 4.3 (released October 10, 2026), repeated in version 4.3.1 (released October 11, 2026): "Adaptive iPhone Duo layouts for book, laptop and tent views." The notes don't describe them. There are no pictures of it on the Duo yet. The App Store seller is Raphael Lesourd (id 6740165946). Specific fold adaptations are not yet documented.
Stephen Robles
A shelf for snippets, links and files you paste again, filling both Duo screens
Developer claimed: The developer, in the release notes for version 1.8 (released October 7, 2026): "Ready for iPhone Duo. Stash fills the outer and inner displays edge to edge and adapts as you fold and unfold." Stephen Robles said the same on Bluesky on October 9, 2026 (bsky.app); that post's pictures show the App Store pages on an ordinary iPhone. There are no pictures of it on the Duo yet. The App Store seller is Stephen Robles (id 6797985046). Specific fold adaptations are not yet documented.
Koray Kupe
Practical Dutch lessons with side tabs on the cover and the big screen when open
Developer claimed: The developer, in the release notes for version 3.5.2 (released October 9, 2026), as the App Store's version history shows: made for iPhone Duo, lessons use the cover display with tabs along the side when folded and move to the inner display when unfolded. The current version, 3.5.7 (released October 18, 2026), doesn't mention the Duo. There are no pictures of it on the Duo yet. The App Store seller is Koray Kupe (id 6755851260). Specific fold adaptations are not yet documented.
Log doses on the cover, open the Duo to compare reports and your health over years
Developer claimed: The developer, in the release notes for version 2.3 (released October 10, 2026), repeated in version 2.4 (released October 11, 2026): on the outer display you log daily medicines and symptoms; open, you see Healthscape and compare reports with the records taken from them. There are no pictures of it on the Duo yet. The App Store seller is Tiven Limited (id 6778361563). Specific fold adaptations are not yet documented.
Unlypt
A calendar and to-do list in one app, updated for the Duo
Developer claimed: The developer, in the release notes for version 0.4.0 (released October 10, 2026), which list support for the foldable iPhone Duo. There are no pictures of it on the Duo yet. The App Store seller is Unlypt (id 6759196723). Specific fold adaptations are not yet documented.
Troy Husted
A weather app where a dressed-up goose shows what to wear, now on the Duo
Developer claimed: The developer, in the release notes for version 2.4.0 (released October 10, 2026): "Official support for the iPhone Duo!" There are no pictures of it on the Duo yet. The App Store seller is Troy Husted (id 6762085849). Specific fold adaptations are not yet documented.
Neave Interactive Limited
A live weather map and hurricane tracker that adapts to folding phones
Developer claimed: The developer, in the release notes for version 6.3 (released October 10, 2026), repeated in version 6.3.1 (released the same day): "Foldable Device Support. The interface now adapts to different layouts on folding devices." The Duo isn't named. There are no pictures of it on the Duo yet. The App Store seller is Neave Interactive Limited (id 1531561063). Specific fold adaptations are not yet documented.
Toni Na
A calm podcast player whose latest update adds iPhone Duo support in every orientation
Developer claimed: The developer, Toni Na, posting as toni on X on October 10, 2026, announcing an update with Duo support (@thinkrectangles on X). The release notes for version 2.0.2 (released October 10, 2026) list iPhone Duo support in all orientations and say the iPad now gets the new iPhone Duo player. The post's pictures show an ordinary iPhone and the App Store page, not the Duo. Specific fold adaptations are not yet documented.
Timothy Murphy
A database client whose update puts the query editor upright and the results flat
Developer claimed: The developer, Timothy Murphy, in a post on X on October 10, 2026, announcing LunoDB Mobile 1.6.0 as ready for iPhone Duo (@idevtim on X). The release notes for 1.6.0 (released October 10, 2026) say the same. The post's picture shows the app on an ordinary iPhone, not the Duo. Specific fold adaptations are not yet documented.
Boris Niehaus
Berlin's registered demonstrations, with calendar and day list side by side open
Developer claimed: The developer, posting as Polizei Stressi on X on October 10, 2026, calling version 5 of the app Duo-ready and showing its release notes (@PStressi57058 on X). The release notes for 5.0.0 (released October 10, 2026) say the app uses both displays: open, the calendar and the day's list, search and its results, and the helicopter map and its analysis sit side by side. The post's picture is the App Store page, not the app on the Duo. Specific fold adaptations are not yet documented.
Zhao Xin
Bedtime, naps and a mood diary, shown on the Duo's cover and its open inner screen
Developer claimed: The developer, Zhao Xin, in a post on X on October 10, 2026 saying version 1.7.3 already supports iPhone Duo, with the app's new App Store screenshots of the inner and outer displays (@owenzhao on X). The release notes for 1.7.3 (released October 10, 2026) don't mention the Duo. The App Store seller is 鑫 肇. Specific fold adaptations are not yet documented.
Seacloud Software LLC
Baby tracker that keeps your place as you fold and unfold the Duo
Developer claimed: The App Store release notes for version 13.39: "IPHONE DUO. The app is optimized for iPhone Duo. It adapts seamlessly to both the cover display and the inner display, and keeps your place when the device is folded or unfolded." The current version, 13.41, lists only bug fixes. Specific fold adaptations are not yet documented.
Squared LLC
Golf swing app that lists iPhone Duo support
Developer claimed: The App Store release notes for version 0.8.9: "iPhone Duo support". Specific fold adaptations are not yet documented.
Funn Media, LLC
Water tracker whose home, history and settings use the big unfolded screen
Developer claimed: The App Store release notes for version 8.1.1: "Made for iPhone Duo: Home, History, Settings, Sharing and more use the big unfolded screen (iOS 27.1)." Specific fold adaptations are not yet documented.
ZAWA SYSTEM
RSS reader with AI summaries, now laid out for both Duo screens
Developer claimed: The App Store release notes for version 2.6.3 (released October 9, 2026): "iPhone Duo support". Yosuke Fukazawa, who makes it, posted about it on X, and ZAWA SYSTEM said the app now fills the open screen while the side column waits on Flutter (@zawasystem on X). Specific fold adaptations are not yet documented.
Shayne McCulloch
Cue sports shot clock with a Duo concept: stream inside, clock facing the players
Developer claimed: The developer's own site has an iPhone Duo concept preview (cuetools.app). It says these are design concepts, not available features, so nothing is shipped for iPhone Duo yet. Specific fold adaptations are not yet documented.
Adrian Schoenig
Album player with a now playing screen and a full album wall on the closed cover
Developer claimed: The developer, Adrian Schönig, in a Mastodon post with two screenshots of Longplay on the closed iPhone Duo, saying the work is in progress because the iOS interface is all custom (aus.social). Not yet stated as released. Specific fold adaptations are not yet documented.
Clay Software, Inc.
Personal contacts app with its tabs in the side strip on the closed cover
Developer claimed: The app's own Bluesky account, saying Mesh is ready for launch day with support for the iPhone Duo (bsky.app). Specific fold adaptations are not yet documented.
Roman Savchyn
A study timer with a cozy anime companion, shown full screen on the open Duo
Developer claimed: Roman Savchyn, the developer, in a Bluesky post with a screenshot of Miyu on the open iPhone Duo, saying there is still a lot to fix before the hardware ships (bsky.app). The App Store page does not mention the Duo. Specific fold adaptations are not yet documented.
Adam Saleh
Chess clock on the closed cover, with the scoresheet and results on the inner display.
Developer claimed: The app's own Bluesky account, in a post with a video of Chess Clock on the iPhone Duo (bsky.app). The App Store developer is Adam Saleh. Specific fold adaptations are not yet documented.
Savage Interactive
Procreate's sketching and painting app for iPhone, with Duo support on the way.
Developer claimed: Savage Interactive, from its official @Procreate account, in a reply on X: it plans to support Pocket on Duo after testing and optimising it. No Duo update has shipped yet. Specific fold adaptations are not yet documented.
Sax Technical Solutions
Recipe app with your recipe list on the left and the recipe on the right when open.
Developer claimed: Josh of Sax Technical Solutions, the App Store seller, in a Bluesky post with screenshots of Trophikos on the iPhone Duo (bsky.app). Josh says the UI polish for the Duo is under way, with more to do. Specific fold adaptations are not yet documented.

Adapt an iOS app for iPhone Duo with Claude Code or Codex: script the Xcode 27.1 simulator to fold, rotate and screenshot it, and use measured layout rules.

What iPhone Duo animates for you when it opens, shuts, turns and bends, the one change it leaves to your app, and how to animate that one. From frame-by-frame films of a real app.

Over 700 demos, concepts and prototypes for iPhone Duo, sorted into the six patterns that keep coming up, from the half-folded laptop to the hinge as a controller. A starting point if you're deciding what to build.

iPhone Duo's inner display is nearly iPad mini sized, but it runs iOS, not iPadOS. What that means for iPad-only apps, why many Duo apps will look like their iPad versions, and what the Duo borrows from iPad.

Which games have been shown on iPhone Duo, how un-updated games look on the open display, and the new kinds of play builders are making with the hinge, the half fold and two screens.

The apps worth installing now that iPhone Duo is on sale, from the apps Apple named as launch partners to indie apps whose developers have shown a real iPhone Duo layout, picked for what they do when you open the phone.

Every iPhone app opens on iPhone Duo, but only updated ones fill the inner display. What an app looks like before its developer adapts it, how to tell which are ready, and which popular apps have said so.

iPhone Duo is the first iPhone that can show two apps at once. How Split View works, what its limits are, and which apps are built to share the screen.

Apple opened App Store submissions for iPhone Duo apps on October 5. Which Xcode to build with, the new screenshot sizes, the April 2027 rule, and how to tell the App Store your app is ready for the fold.

A plain-language guide to the ways you will hold iPhone Duo, what the phone itself does in each, and the apps and ideas that make the most of them. For anyone buying one, and for anyone building for it.

What the fold looks like from React Native, Flutter, a web page and a WebView. What every stack gets for free, which bridges expose the hinge and the fold, and what still needs Xcode.

Two front cameras, the Virtual Front Camera, the direction coordinator, and the camera capture accessory, the one way an app can use both displays at once.

Read the hinge with onHingeChange, then turn the angle into a position, a speed or a snap. How developers built hinge games, the fallbacks they shipped, and how to test without hardware.

Reserved regions, ArrangementView, and the hinge-angle API. How to keep controls off the crease, and when a second display or a second window is actually available.

How iPhone Duo moves navigation, toolbars, and tabs to the side, which containers qualify, and how to place sheets and floating buttons.

How to get Apple's iPhone Duo simulator, fold it to any pose or hinge angle, and test your app, plus the simulators you can try without a Mac.

Lay out one app for both iPhone Duo displays. Size classes, the wide inner canvas, floating controls, and what the system already moves for you.

Outer and inner display sizes in pixels and points, density, and the physical dimensions of iPhone Duo, plus what not to hardcode from them.
iPhone Duo went on sale on Friday, October 23, 2026 in the US and more than 70 other countries and regions, and 28 more countries and regions follow on October 30. Pre-orders opened on October 16, and supply is tight. TNW reported that US delivery estimates "moved to January minutes after preorders opened on 16 October", and that Apple's US store showed "25 January for all models" about half an hour after orders opened.
Apple named Netflix, Zoom, Slack and Detail as launch partners when it announced the phone, and about fifty more on October 22, from Prime Video, Instagram and Fantastical to Asphalt Legends; Microsoft Word and Outlook are due in the following weeks. Gizmodo's Raymond Wong found in his review that "almost all of Apple's own apps are optimized for the iPhone Duo's inner display". FoldHunt lists more than 900 other apps and games adapted for iPhone Duo, each labelled by how it was checked. Simulator verified means it was seen running in the iPhone Duo Simulator (Device verified when the latest check was on a real iPhone Duo). App Store confirmed means its App Store page names iPhone Duo, so the update is out. Developer claimed means its developer says so, but it hasn't been seen running. Well-known apps such as WhatsApp, YouTube and TikTok haven't announced a version for iPhone Duo and are tracked as Not announced.
The outer display is 5.4 inches (1398 × 2034 pixels, 460 ppi) and the inner folding display is 7.6 inches (1878 × 2670 pixels, 430 ppi). Both share the same aspect ratio, so content scales proportionally when you open the device.
Build with the iOS 27.1 SDK in Xcode 27.1 and run the iPhone Duo simulator in Device Hub, which can open, close, rotate and fold the device. Now that iPhone Duo is on sale, developers can also check their apps on the phone itself. See our simulator guide for a full checklist.
Yes. Since October 5, 2026, apps and games optimized for iPhone Duo can be submitted in App Store Connect, built with Xcode 27.1. iPhone Duo screenshots are optional for now and required for every submission from April 2027.
No. FoldHunt is an independent, editor-run directory. iPhone is a trademark of Apple Inc.
Sources: Apple unveils iPhone Duo — Apple Newsroom · iPhone Duo — Technical Specifications · Prepare and submit your apps for iPhone Duo — Apple Developer News · Apple's iPhone Duo sells out in minutes, with deliveries pushed to 2027 — TNW · iPhone Duo Review: Waiting to Refine Foldables Was the Right Move — Gizmodo