Outer display apps 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.

GIF shelves across both halves, a GIF above its tags when folded, a showcase as a tent

Developer claimed: 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 page does not mention the Duo yet.

AI agent quotas and sessions, two columns open, a desk display when it stands

Developer claimed: 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 page does not mention the Duo yet.

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.

Game emulator whose library reflows for the cover, open flat, standing and half-folded.

Developer claimed: Riley Testut, on Mastodon (mastodon.social), showing Delta's library in the iPhone Duo simulator. The App Store seller is Yvette Testut (Testut Tech).

Episode cards that split at the Duo crease

Developer claimed: Gowtham Oleti (@gow88_) posted Brink on the Duo simulator closed, open and half-folded (@gow88_ on X).

An inbox for quick notes: on the cover, beside the note you picked open, and standing

Developer claimed: 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 page does not mention the Duo yet.

Ambient noise that splits at the Duo crease

Developer claimed: Charlie Chapman (@_chuckyc) showed Dark Noise on the Duo simulator closed, open and half-folded, after a few small tweaks (@_chuckyc on X).

Goal rings on the cover, chart beside them open

Developer claimed: David Steppenbeck (@dsteppenbeck) posted GridKit on the Duo simulator closed, half-folded and open (@dsteppenbeck on X).

A grid of habit cards on the cover; open, a sidebar of collections beside it

Developer claimed: 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.

Podcast cover art up, playback below when half-folded

Developer claimed: Federico (@MicropodAudio) posted Micropod on cover, half-folded and open Duo poses (@MicropodAudio on X).

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 page does not mention the Duo yet.

Vlog preview and moments that split at the Duo fold

Developer claimed: oblivious (@oblivious_film) posted its Duo layouts for each pose, due in version 2.2.0 (@oblivious_film on X).

Top stories on the cover, the list beside the article when open

Developer claimed: 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.

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, saying Duo support will be ready on day one (getpersonalbest.com), linked from a post on X. The App Store page does not mention the Duo yet.

Old PC-98 MIDI songs, controls on the cover, split half-folded, all 32 parts open flat

Developer claimed: 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.

Repaint a 3D room on the cover, half-folded or open

Developer claimed: RoomGenie (@RoomGenieApp) posted the 3D room on the Duo simulator half-folded, closed and open (@RoomGenieApp on X).

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.

Show list beside episode detail across the crease

Developer claimed: Maximilian Litteral (@maxhasadhd) posted Television Time on the Duo simulator open, half-folded and closed (@maxhasadhd on X).

Farm plots that span the Duo crease

Developer claimed: Simon Grimm (@schlimmson) posted Tiny Harvest (shown as Golden Grove) folding across Duo poses in the simulator (@schlimmson on X).

Markdown drafts on the cover, open and half-folded

Developer claimed: 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.

Sales charts on the cover, a sidebar of sections half-folded, a full chart open flat

Developer claimed: 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 renders of it closed, half-folded and open (@SlowbrewedS on X). The App Store description also mentions the Duo.

The day's briefing on one half and the AI chat on the other, open or half-folded

Developer claimed: 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 page does not mention the Duo yet.

Keepsake boxes on the cover, bigger when open, a shelf with a lamp when stood up

Developer claimed: 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 page does not mention the Duo yet.

Timed notes for your partner, with a layout closed, half-folded and open

Developer claimed: 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 page does not mention the Duo yet.

Park badges on the cover, a wider shelf half-folded, a map of your visits open flat

Developer claimed: 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 page does not mention the Duo yet.

Warsaw's buses and trams live on the map, closed, open or half-folded

Developer claimed: 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 page doesn't mention the Duo yet.

The phone layout on the cover, feeds beside articles when open

Developer claimed: Inoreader, in a blog post on October 5, 2026, with screenshots from the Duo (inoreader.com). The post says Duo support is not in the App Store version yet and should ship before the phone goes on sale.

Jazz explorer, an artist and player on one side and their recording sessions on the other

Developer claimed: 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.

IPTV player with the picture above the fold and the channel guide below

Developer claimed: 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.

Dog walk tracker that puts the route above and the controls below when half-folded

Developer claimed: The developer, Akshat Saladi, in a LinkedIn post with a simulator video of Zoomie's iPhone Duo layouts (linkedin.com). The App Store notes for version 1.0.5 say the app is getting ready for iPhone Duo. Not yet stated as released.

Art practice timer that puts the reference photo above the fold and the timer below.

Developer claimed: Jeremie Berduck, in a Mastodon post (iosdev.space).

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 studio's site, daywellspent.io, lists this app, and the App Store seller is Day Well Spent LLC.

News digest that becomes a desk display: the photo above the fold, the story below.

Developer claimed: Patrick Ostertag of OK-ia, in Mastodon posts (techhub.social and techhub.social). The App Store seller is Patrick Ostertag.

Contact dates app with a new stats pane made to fill the open Duo's wide screen.

Developer claimed: Ziga Dolar, in a Mastodon post (mastodon.online).

Theme park wait times that float over a full park map when the Duo opens.

Developer claimed: Matteo Dall'Ombra, in Mastodon posts (mastodon.social and mastodon.social).

Dungeon card game laid out for the cover, the open screen and a half fold.

Developer claimed: David Freeman, in a Mastodon post (mas.to).

Day planner that gives the current activity's tasks their own half when folded.

Developer claimed: Gabriel Guarino, on the SuperPlanner press kit (superplanner.app), with screenshots and a showcase video from the iPhone Duo simulator.

Local posts on a map, with cards and map rearranged for each way the Duo is held.

Developer claimed: 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.

Bible reader in vertical text that opens into a right-bound book spread.

Developer claimed: 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.

Scrobble the track you're hearing on cover or open

Developer claimed: Tomás Martins (@TommyCadle) posted Duo simulator shots of AirScrobble on the outer and inner displays (@TommyCadle on X).

A puzzle for two opposite movers, with one grid on each half when the Duo opens

Developer claimed: The developer, Klemens Strasser, in an X post with a simulator video of Asymmetric on iPhone Duo, closed and open (@klemensstrasser on X). The App Store version dates from 2023 and doesn't mention iPhone Duo. Not yet stated as released.

The icon and its layers on one half, the chosen layer's settings on the other

Developer claimed: 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 Store page (version 27.1) does not mention the Duo yet.

Breathing and focus sessions in every Duo orientation

Developer claimed: 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).

The whole case on the cover; open, every suspect's clue sits beside the board

Developer claimed: 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 App Store page doesn't mention the Duo yet.

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.

Chess and its fist fights on the cover; unfold mid-fight and the brawl fills the screen

Developer claimed: The developer account @COMBATCHESS, in a post on X with a video of CombatChess on the cover and open, saying it will be supported on day one (@COMBATCHESS on X). The App Store page doesn't mention the Duo yet.

Recipes on the cover, photo beside the steps when half-folded

Developer claimed: Kaz Motoyama (@kudakurage / Spinners) showed COOKY on the Duo simulator closed and half-folded (@kudakurage on X).

Bricks fill the cover; open, panels of score and lives frame the playfield

Developer claimed: 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.

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.

Pick an old photo on the cover, then unfold to hold it up large against the street today

Developer claimed: 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 App Store page doesn't mention the Duo yet.

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.

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), and the App Store release notes say Finny fills the big screen on iPhone Duo.

Incident videos on the cover; open, each video sits beside its map or comments

Developer claimed: 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 page does not mention the Duo.

Your Mac's desktop on the cover or filling the open Duo

Developer claimed: 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

Developer claimed: Jaz Singh (@jazkng), who builds Houseshare, posted it on the Duo simulator closed and open (@jazkng on X).

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).

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 its App Store description has a Duo support section.

Deep-work focus on the cover; timer beside the start card when open

Developer claimed: 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.

Number-system drills on the cover; open, all four drills beside your daily goal

Developer claimed: 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 page does not mention the Duo yet.

Customize beside the Intervention Gallery when open, the gallery alone closed

Developer claimed: 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 App Store page doesn't mention the Duo yet.

A globe beside your income and spending when open, the lists on the cover when closed

Developer claimed: 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.

A meal's photo and macros on the cover, the same read-out in one column when open

Developer claimed: 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.

Your TV watch list on the cover, and two columns, schedules and seasons when open

Developer claimed: 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 page does not mention the Duo yet.

To-dos one list at a time on the cover, with a sidebar of all your lists when open

Developer claimed: 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 App Store page does not mention the Duo.

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.

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.

Party games whose card deck waits on the cover and deals to the whole table when open

Developer claimed: Shubham Singh, the developer, in a post on X with a simulator video of work-in-progress iPhone Duo support (@Shubham_iosdev on X). The App Store page does not mention the Duo.

A task list closed, list and details side by side open, and a full week calendar

Developer claimed: 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).

Your book and a reading timer on the cover, a two-page spread inside

Developer claimed: The developer's account, @actuallyreadapp, posted a video of Actually Read on iPhone Duo (@actuallyreadapp on X). The App Store page doesn't mention the Duo yet.

Your step-powered pixel pet on the cover, then beside workouts or outfits when open

Developer claimed: 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.

A blackjack trainer with the table on one half and the coach on the other when open

Developer claimed: Myles Resnick, the developer, in a reply on X saying BlackJackal will 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).

Your day's macros beside the food camera on the open Duo

Developer claimed: 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.

A wider photo grid when open, and each picture's map and details beside or below it

Developer claimed: Dandy Weng, who makes Camarts, 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 page does not mention the Duo yet.

Today's plan on the cover, and open flat, the plan beside events and overdue tasks

Developer claimed: 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.

Parcels on the cover, a parcel's history beside its map when open

Developer claimed: The app's account, @deliveries_app, posted a Duo simulator video of a new layout for the Duo (@deliveries_app on X). The App Store page doesn't mention the Duo yet.

Language-learning podcasts with a side rail closed, episodes beside the list open

Developer claimed: The developer (@huang4fun on X) posted EchoPod's Duo layout in the simulator (@huang4fun on X), and the App Store release notes mention support for the iPhone Duo layout.

Ink one page, close the Duo to print it on the facing page

Developer claimed: The developer (@ruqqq on X) posted a video of Foldink ported to the iPhone Duo simulator (@ruqqq on X). The App Store page doesn't mention the Duo yet.

A concert history that turns like a book's pages on the open Duo

Developer claimed: The developer, Hidde van der Ploeg, posted a Duo simulator video of Gigs (@hiddevdploeg on X) and later said it will be available on day one, with pictures of it on the open Duo (@hiddevdploeg on X).

Your groups closed, and everyone's week with their photos when the phone is open

Developer claimed: 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).

Habit cards on the cover, a daily progress chart beside them when open

Developer claimed: The developer (@techchee on X) posted a Duo simulator video of HabitPath after updating its dashboard for foldables (@techchee on X), and the App Store notes for version 3.1.0 list full support for the iPhone Duo screen layout.

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.

Open, your items sit beside the chosen product, with stores and locations in a sidebar

Developer claimed: 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 page does not mention the Duo yet.

Next shot on the cover, shot details and weight chart when open

Developer claimed: The developer (@BechirArfaoui on X) posted a video of Jabby running in the iPhone Duo simulator (@BechirArfaoui on X). The App Store page doesn't mention the Duo yet.

Saved articles as magazine covers when closed, a photo-and-text spread when open

Developer claimed: 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 page does not mention the Duo yet.

Your day planner and habit streaks in two panes when open, your life in years on the cover

Developer claimed: 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 App Store page does not mention the Duo yet.

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.

The forecast on the cover, the radar across the whole open screen

Developer claimed: The app's account (@MammatusWx on X) said it is finalising iPhone Duo support, with pictures of the cover and the open phone (@MammatusWx on X).

A pixel cat's room beside the week's tasks on the open Duo

Developer claimed: 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 page doesn't mention the Duo yet.

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.

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.

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.

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 page doesn't mention the Duo yet.

The hour's dial beside the whole day's planetary hours

Developer claimed: The app's account (@PlanetaroApp on X) posted a Duo simulator video and said it is working to have it ready for day one (@PlanetaroApp on X).

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.

A holiday rental's locks, pool and guests, from the cover to the open Duo

Developer claimed: The developer, Chris Danks, said on X that RentalHelm is ready for iPhone Duo, with a simulator video (@christesla on X). The App Store page doesn't mention the Duo yet.

Running stats and coaching in two columns when open, one scrolling column on the cover

Developer claimed: 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 page does not mention the Duo yet.

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.

Sign cards on the cover, then the cards on one half and a sign's details on the other

Developer claimed: 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 supports the Duo and is being submitted to the App Store (@antonio07341176 on X). The App Store page does not mention the Duo yet.

Your latest MPG on the cover, the trend and service reminders beside it

Developer claimed: 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.

A random record from your Discogs shelf, cover beside its details when open

Developer claimed: 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.

A podcast player with the transcript beside the artwork when open

Developer claimed: The developer, Shawn Hickman, posted Sofa's redesigned podcast player on the Duo and said iPhone Duo support is coming along (@poohbers on X).

The board on one half and the keypad on the other when open

Developer claimed: The developer (@Bobj_c on X) posted that Sudoku Mania now supports iPhone Duo, with a simulator video (@Bobj_c on X). The App Store notes for version 1.3.1 say the same.

Swipe through old photos on the cover, with bigger cards when open

Developer claimed: The developer (@GrutzDevid on X) posted a Duo simulator video and said they have started optimising Sweepr for iPhone Duo (@GrutzDevid on X). The App Store page doesn't mention the Duo yet.

Saved Spaces side by side when open, and the same Space carries on when you fold it

Developer claimed: 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 page does not mention the Duo yet.

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 poop log with a boxing mascot, from the cover to the open Duo

Developer claimed: 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.

Routines on the cover, and open, each step up top with a big Done button below

Developer claimed: 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 page does not mention the Duo yet.

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.

Today's sky on the cover, the sky beside the hourly and 10-day forecast when open

Developer claimed: 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 page does not mention the Duo yet.

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).

One Berlin pick on the cover, a row of cards under the map when open

Developer claimed: 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.

PS5 Remote Play with the game above the fold and a touch controller below

Developer claimed: 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). Planned, not yet released.

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.

Checkbook register that opens into a month calendar of payments beside your budgets

Developer claimed: 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.

CI build alerts, your repositories on the cover and a repo's build status beside them open

Developer claimed: Darryl Bayliss, who makes Buildhorn, in a Bluesky post with a recording of it on the iPhone Duo simulator (bsky.app). The App Store seller is Daz Software Ltd; the App Store page does not mention the Duo.

Its scripture reader shows one page when closed and a two-page spread when open

Developer claimed: 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

Developer claimed: 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.

Drone flight score on the cover, forecast and daylight beside the scene when open

Developer claimed: Nicholas Dapolito, the developer, in a Bluesky post with a first look at Flyby in the iPhone Duo simulator (bsky.app). The App Store page does not mention the Duo yet.

Keeps track of the cards you send, with occasions beside the card when the Duo opens

Developer claimed: 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.

Daily word game whose grid and score rearrange for every fold and turn

Developer claimed: The developer, Chad Etzel, in an X post with a simulator video of Letters' main game view updated for iPhone Duo's screens, rotations and poses (@jazzychad on X). Not yet stated as released.

Magic: The Gathering decks and playtests that spread out to more card columns when opened

Developer claimed: 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 page does not mention the Duo.

Budget forecast with a side rail and a grid of cards when the Duo is open

Developer claimed: Its maker, Julio, in a YouTube live stream reworking NEKO's screens for the iPhone Duo simulator (youtube.com). Work in progress, not yet stated as released.

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.

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.

Your saved AI prompts in one column closed, two columns and a wider keyboard grid open

Developer claimed: Parker Ortolani, the developer, in a post on X saying the update submitted to App Review is ready for iPhone Duo, with simulator footage. The App Store version at the time was 1.0, so the Duo update may not be out yet.

Social step counter with walk videos beside their comments when the Duo is open

Developer claimed: 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). Not yet stated as released.

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.

Local file sharing, with the address on one side and your files on the other when open

Developer claimed: 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.

Camera-to-phone photo transfer that opens into a bigger photo, thumbnails and collections

Developer claimed: 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 page does not mention the Duo.

Markdown notes, the note list moves in beside the note you're writing when open

Developer claimed: 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).

Monthly spending lists on one side, that month's transactions on the other

Developer claimed: 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.

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.

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.

Photo cleaner, compare similar shots side by side when open, swipe the rest closed

Developer claimed: 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 page does not mention the Duo yet.

Battery forecasts side by side when open, and a charging horizon that sits on the fold

Developer claimed: Christian Skorobogatow, the developer, in a post on X showing Unplugged on the iPhone Duo simulator and saying version 4.1.0 is made for iPhone Duo. The App Store version at the time was 4.0.0, so the Duo update may not be out yet.

Daily planner that puts your lists and projects beside the day when the Duo opens.

Developer claimed: 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.

Network monitor that keeps the download and upload graphs in view in every pose.

Developer claimed: Sören Gade, in a Mastodon thread (mastodon.social) showing Bandwidth Monitor in the iPhone Duo simulator. The App Store seller is Soeren Gade.

Flashcards whose score buttons stay on the lower half when the phone sits folded.

Developer claimed: Juan Arzola, in Mastodon posts (sfba.social and sfba.social). The App Store seller is autorelease LLC.

Screen recording editor whose controls move to the sides when the Duo opens.

Developer claimed: Mathijs Kadijk of Nonstrict, in a Bluesky post (bsky.app). The App Store seller is Nonstrict B.V.

Day planner that opens into side-by-side day columns for a trip.

Developer claimed: Joseph Humfrey, in a Bluesky post (bsky.app) showing it in the simulator. The App Store seller is Selkie Design Ltd, whose site names Joseph Humfrey as the maker.

Quit-smoking tracker that opens into a flip clock beside craving tools.

Developer claimed: Oleg Plugaru, the App Store seller, in a post on X. The X profile links to this App Store page.

Pro camera whose collections spread across the open Duo and shrink to one photo shut.

Developer claimed: 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.

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.

Risk register on the cover, register and risk detail side by side when the Duo opens.

Developer claimed: Ricardo Martinez, in the "Risky Business on iPhone Duo" post on the app's blog (riskybusinessapp.net), says version 2.13 with the Duo layout is held back until the phone goes on sale. The App Store seller is Ricardo Martinez Benesenes.

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. Version 1.3, on the App Store now, keeps them.

Interval timer chains whose native toolbars reflow onto the open Duo.

Developer claimed: Sahil AK (@mdsahilak), in a post on X. 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".

Text to speech reader that keeps the spoken line highlighted as the phone opens.

Developer claimed: Dani Devesa Derksen-Staats, in a Mastodon post (iosdev.space). The App Store seller is Daniel Devesa Derksen-Staats.

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. Not shipped yet.

Hydration pace against a day timeline on the Duo cover

Developer claimed: 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 does not mention the Duo yet.

Study timer and community feed on the Duo cover

Developer claimed: 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.

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).

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.

Game Boy emulator skin that clears the Duo camera hole

Developer claimed: 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 retro space shooter with a landscape mode for the closed Duo

Developer claimed: 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.

Set NBA and MMA game alarms on the Duo cover

Developer claimed: The developer, @SemiClouds on X, posted Duo cover screenshots of Set Alarm for NBA and MMA (@SemiClouds on X). The App Store lists the seller as Federico Alvarenga and does not mention the Duo yet.

Turns Letterboxd reviews into story cards, made start to finish on the Duo's cover

Developer claimed: 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 App Store page does not mention the Duo.

Plan an electric car trip, charge levels and all, on the Duo cover

Developer claimed: 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.

Receipts and warranty countdowns on the cover, as icons, a list or a gallery

Developer claimed: 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.

A new walking route each day, on a 3D map on the Duo cover

Developer claimed: 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 page doesn't mention the Duo yet.

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 App Store page does not mention the Duo.

Podcast player whose one-column library fits the Duo's outer display.

Developer claimed: Deng Gao (@gaodengming), in a post on X saying the Duo adaptation is nearly done. The App Store seller is 登明 高, Dengming Gao.