Health & Fitness v5.13
Does Exposr work on iPhone Duo?
Mostly. Exposr 5.13 is built with the iOS 27.0 SDK, so it fills most of iPhone Duo's inner display but leaves some space unused.
At a glance
- Inner display (7.6″)
- Partly adapted
- Outer display (5.4″)
- Works normally
- Built with
- iOS 27.0 SDK
- Version 5.13, read Oct 25, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v5.13
- Oct 23, 2026
- Duo in release notes
- Not yet
On the inner display
Built with the iOS 27 SDK, the app extends across most of the inner display, but some areas stay empty. It's usable, just not polished.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Exposr. 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
None confirmed yet. Duo-specific features include side toolbars, layouts that react to the fold, and content on the outer display while the app is open inside.
Evidence & history
App build,
Version 5.13 is built with the iOS 27.0 SDK
Apple gives apps built with the iOS 27.0 SDK more of the inner display, with some space left over.
- : Not confirmed yet → Partly adapted — built with the iOS 27.0 SDK
Latest release notes
Version 5.13 · Oct 23, 2026
Bug fixes and improvements to scanning.
Questions
Does Exposr work on iPhone Duo?
Mostly. Exposr 5.13 is built with the iOS 27.0 SDK, so it fills most of iPhone Duo's inner display but leaves some space unused.
Does Exposr 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 Exposr 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 Exposr 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 Exposr 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 Exposr within about a day of its release and update this page.
What can I do about the black bars until then?
Use Exposr 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.