Utilities v6.25.1
Does Cleanup work on iPhone Duo?
It works, but with black bars. Cleanup 6.25.1 is built with the iOS 26.0 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
At a glance
- Inner display (7.6″)
- Black bars
- Outer display (5.4″)
- Works normally
- Built with
- iOS 26.0 SDK
- Version 6.25.1, read Oct 28, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v6.25.1
- Oct 27, 2026
- Duo in release notes
- Not yet
About Cleanup
Cleanup is made by DEEP FLOW SOFTWARE SERVICES and first came out on the App Store in December 2020. It's #42 on today's US App Store top charts. It has 753,828 ratings on the US App Store, averaging 4.7 stars. Version 6.25.1 came out on Oct 27, 2026 and needs iOS 15.0 or later. It's free to download. Among the 30 utilities & lifestyle apps we track on the US App Store, 9 already fill the inner display, 3 are partly adapted and 18 still show black bars. By number of ratings, Cleanup is #16 of them.
From its App Store listing:
Clean up your iPhone and optimize storage in seconds. Remove duplicate photos, videos, and junk emails. Cleanup helps you clear your camera roll, merge duplicate contacts, compress videos, and organize storage — all in one app. OPTIMIZE STORAGE – FREE UP SPACE WITH ONE TAP Running low on space? Cleanup gives you powerful tools to take control: - Delete duplicate photos and videos - Remove similar …
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.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Cleanup. 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 6.25.1 is built with the iOS 26.0 SDK
Apple runs apps built with the iOS 26 SDK or earlier in a phone-sized window on the inner display.
- : Not confirmed yet → Black bars — built with the iOS 26.0 SDK
Latest release notes
Version 6.25.1 · Oct 27, 2026
We’ve improved overall app performance and addressed minor issues for a smoother experience.
Questions
Does Cleanup work on iPhone Duo?
It works, but with black bars. Cleanup 6.25.1 is built with the iOS 26.0 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Cleanup 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 Cleanup 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 Cleanup 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 Cleanup 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 Cleanup within about a day of its release and update this page.
What can I do about the black bars until then?
Use Cleanup 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.