iPhone Duo apps

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 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."

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.

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.

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.

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.

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.

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.

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.

On-device AI video creation, built on the new Core AI framework.

Launch partner: Named by Apple as an iPhone Duo launch partner.

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."

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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).

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.

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.

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.

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.

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.

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).

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.

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!"

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.

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).

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.

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.

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).

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.

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).

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".

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.

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.

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.

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.

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).

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.

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).

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.

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).

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.

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".

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."

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.

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.

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.

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.

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.

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.

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).

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.

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".

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.

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."

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.

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 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.

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".

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.

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.

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.

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".

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.

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.

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.

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.

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.

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.

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).

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).

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.

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).

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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).

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.

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.

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).

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.

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.

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.

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.

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."

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.

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.

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."

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".

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.

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.

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).

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.

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.

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.

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.

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.

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.

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.

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".

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.

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.

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.

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.

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.

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.

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.

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."

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.

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.

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.

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.

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.

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.

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."

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.

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.

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.

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.

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.

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.

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."

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.

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).

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.

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."

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.

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."

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.

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.

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.

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.

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).

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.

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.

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.

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.

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.

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).

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!"

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.

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".

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.

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.

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.

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.

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.

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.

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.

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.