Music v2.150.0
Does Moises work on iPhone Duo?
It works, but with black bars. Moises 2.150.0 is built with the iOS 26.5 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Apple lists Moises as made for iPhone Duo, but the version on the App Store today (2.150.0) is built with the iOS 26.5 SDK, which can’t use the whole inner display. This page switches to Built for Duo when a version built with iOS 27.1 or later ships.
At a glance
- Inner display (7.6″)
- Black bars
- Outer display (5.4″)
- Works normally
- Built with
- iOS 26.5 SDK
- Version 2.150.0, read Oct 24, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v2.150.0
- Oct 15, 2026
- Duo in release notes
- Not yet
On the inner display
Apps built with older SDKs are placed in a phone-sized safe area on a black background. Everything works; you just don't get the bigger screen.
Apple named it in its iPhone Duo launch roundup on October 22: it lets you adjust vocals and instruments while following lyrics and chords.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Moises. Open it on the inner display, then add a second app next to it. You can save the pair and come back to it later.
Duo-specific features
- Adaptive layoutRearranges into sidebars or multiple panes on the inner display instead of just stretching.
Evidence & history
Apple,
Developers bring incredible new app experiences to iPhone Duo (Apple Newsroom)
Apple says it lets you adjust vocals and instruments while following lyrics and chords.
App build,
Version 2.150.0 is built with the iOS 26.5 SDK
Apple runs apps built with the iOS 26 SDK or earlier in a phone-sized window on the inner display.
- : Not confirmed yet → Built for Duo — Named in Apple’s iPhone Duo launch roundup
- : Not confirmed yet → Black bars — built with the iOS 26.5 SDK
Latest release notes
Version 2.150.0 · Oct 15, 2026
Under the hood improvements and bug fixes.
Questions
Does Moises work on iPhone Duo?
It works, but with black bars. Moises 2.150.0 is built with the iOS 26.5 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Moises work on the outer display?
Yes. iPhone Duo's 5.4-inch outer display behaves like a regular iPhone screen, so every iPhone app works there as usual.
Can I use Moises in Split View on iPhone Duo?
Yes. On iPhone Duo every app can be placed side by side with another app on the inner display — developers don't need to opt in. How comfortable it feels at half width depends on the app's layout.
Why does Moises have black bars on iPhone Duo?
Apps built with the iOS 26 SDK or earlier run in a phone-sized window on the inner display, and iOS 27 builds can still leave some space empty. The bars disappear once the developer rebuilds the app with the iOS 27.1 SDK — you only need to update the app.
When will Moises fill iPhone Duo's inner display?
When its developer releases an update built with the iOS 27.1 SDK or later. We read the SDK of every new version of Moises within about a day of its release and update this page.
What can I do about the black bars until then?
Use Moises on the outer display, where it works like on any iPhone, or put it in Split View next to another app on the inner display so less of the screen goes unused.