DuoDiscoverDiscover apps for iPhone Duo.
A curated home for apps that work with iPhone Duo. Explore the collection, learn about compatibility, and discover what developers are building.
8 apps listed · launch tracker updated
Featured · Music
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Which apps support iPhone Duo?
As of , Apple has named Netflix, Zoom, Slack and Detail as day-one partners, 3 more apps have announced support, and DuoDiscover has verified 8 apps by hand. Every App Store app runs on iPhone Duo; only apps rebuilt with the iOS 27 SDK or later fill the inner display.
Launch Day Tracker
See AlliPhone Duo ships October 23. These are the apps Apple or their developers have said are ready, with the source for each.
Last updated
| App | Status | Source | Date |
|---|---|---|---|
| Netflix | Named by Apple | Apple Newsroom: “Apple unveils iPhone Duo” | |
| Zoom | Named by Apple | Apple Newsroom: “Apple unveils iPhone Duo” | |
| Slack | Named by Apple | Apple Newsroom: “Apple unveils iPhone Duo” | |
| Detail | Named by Apple | Apple iPhone Duo page (Detail shown on the inner display) | |
| Fantastical | Developer announced | Fantastical 4.2.3 release notes (App Store) | |
| Procreate Pocket | Developer announced | Procreate community forum (staff reply) | |
| Phrase | Developer announced | App Store release notes, Phrase 1.5.0 |
Discover the collection
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Three tiers
Compatibility guideAlso called Made for iPhone Duo. Does something specific with the hardware: a different layout folded and unfolded, Split View, the half-open position or the outer display.
4 apps ›AdaptedRebuilt 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.
3 apps ›CompatibleRuns unchanged. It looks normal on the outer display and keeps its phone layout, with black borders, when unfolded.
1 app ›Every listing is reviewed by hand. See how we review apps.
Categories
See AllFAQ
Which apps are optimized for iPhone Duo?
Apple has named Netflix, Zoom, Slack and Detail as day-one partners and publishes no wider list. DuoDiscover tracks apps in three tiers: Built for Duo (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 (run unchanged). Every listing shows how and when it was verified.
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. DuoDiscover is an independent directory that lists them by hand, with the date and method of each check.
Why do some apps have black bars on iPhone Duo?
Apps built with the iOS 26 SDK or earlier keep their phone layout when iPhone Duo is unfolded, so they appear with black borders on the 7.6-inch inner display. Once the developer rebuilds the app with the iOS 27 SDK or later, it resizes to fill the screen.
How does an app get listed?
Post it in r/iPhoneduoapp with the App Store link and unfolded screenshots. Each app is checked by hand before it is published.