Compose NES-style music with a step sequencer and export songs as audio, MIDI or video.
The directory for Apple’s foldable iPhone
Apps that unfold
with your iPhone Duo.
Every App Store app runs on iPhone Duo — only some are made for it. We find them, test the claims and tell you exactly what each one does with the fold.
- apps listed
- 1487
- built for Duo
- 149
- categories
- 14
- last updated
Built for Duo
Apps that change when you fold, unfold or prop the phone half-open.
Retro music player for your own music and streaming libraries.
Folding the screen locks cartoon inmates in cells; unfolding frees them.
Calm to-do list and paper-style planner that sorts tasks by how long they take
A tabletop-style naval grid game split across the iPhone Duo's fold
Motorsport calendar, results and live timing in your own time zone
A calm origami puzzle where the iPhone Duo's hinge is the fold line
A calm transit-map logic puzzle that splits its stations across the fold
Watch the folding angle change as you open and close the phone.
Evidence and support status.
The three design tiers describe documented behavior. Additional listings are marked Claimed support or Pending verification when evidence does not establish a tier. Sources and check dates appear on each listing.
Built for Duo
Does something specific with the hardware: a different layout folded and unfolded, Split View, the half-open position or the outer display.
149 apps ›
Adapted
Rebuilt with the iOS 27 SDK or later, so it resizes to the 7.6-inch inner display instead of showing black borders. With the iOS 27.1 SDK it can use the whole screen.
50 apps ›
Compatible
Runs unchanged. It looks normal on the outer display and keeps its phone layout, with black borders, when unfolded.
24 apps ›
Ideas for the next wave
From hinge controls to two-screen conversations. Explore what creators are building.
Accorduon0:16
Fold your way into a melody
The hinge becomes accordion bellows, with the keys on screen.
TranslateCat
Two screens, one conversation
Your view inside; their translation outside. A new way to talk face to face.
Pinball0:18
Make the hinge your flipper
Open and close the phone to control a pinball paddle.
Recently added
New listings, with their evidence and support status shown.
Proofread English writing and practice recurring mistakes with a personal learning keyboard.
Play pool matches against other players, build a cue collection and work through competitive tables.
Watch the folding angle change as you open and close the phone.
View live angle measurements and try target-angle challenges.
Launch birds at structures and use their abilities to clear targets.
Race down water slides and try to reach the finish ahead of other racers.
Browse by category
Launch tracker
Which apps Apple and developers have confirmed for iPhone Duo — with sources.
Netflix
Zoom
Slack
Detail
Final Cut Camera+101 Developer announcedMore than apps
Explore wallpapers for both screens. Widgets for the outer display are on the way.
Building for iPhone Duo?
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iPhone Duo apps: FAQ
Which apps are optimized for iPhone Duo?
Apple named Netflix, Zoom, Slack and Detail as day-one partners and does not publish a wider list. We track apps in three tiers: Built for Duo (they use the fold, Split View or the outer display), Adapted (rebuilt with the iOS 27 SDK or later to fill the inner display) and Compatible (they run unchanged). Listings without sufficient evidence are separately marked Claimed support or Pending verification.
Do all iPhone apps work on iPhone Duo?
Yes. Every App Store app installs and runs on iPhone Duo. Apps built with the iOS 26 SDK or earlier look normal on the outer display but keep their phone layout when unfolded, with black borders on the 7.6-inch inner screen. Apps rebuilt with the iOS 27 SDK resize to fill most of it, and with the iOS 27.1 SDK or later all of it.
Does the App Store show which apps are optimized for iPhone Duo?
No. The App Store has no iPhone Duo filter or badge, so there is no official way to browse optimized apps. That is why this directory exists: every app is listed by hand with the date and method of its check.
Why do some apps have black bars on iPhone Duo?
Apps built with the iOS 26 SDK or earlier keep their phone layout on the inner display, so they sit in the middle with unused space around them. Once the developer rebuilds the app with the iOS 27 SDK or later, it resizes to fill the screen.