Games v7.22.0
Does Sudoku.com work on iPhone Duo?
It works, but with black bars. Sudoku.com 7.22.0 is built with the iOS 26.2 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 26.2 SDK
- Version 7.22.0, read Oct 23, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v7.22.0
- Oct 16, 2026
- Duo in release notes
- Not yet
About Sudoku.com
Sudoku.com is made by Easybrain Ltd and first came out on the App Store in March 2017. It's #60 on today's US App Store top charts. It has 1,870,499 ratings on the US App Store, averaging 4.8 stars. Version 7.22.0 came out on Oct 16, 2026 and needs iOS 15.0 or later. It's free to download. Among the 238 games we track on the US App Store, 34 already fill the inner display, 9 are partly adapted and 187 still show black bars. By number of ratings, Sudoku.com is #19 of them.
From its App Store listing:
Have fun and train your brain with one of the most downloaded sudoku apps in the AppStore! Millions of people play sudoku daily and it’s truly a game for everyone! The Sudoku.com app has thousands of classic sudoku puzzles to help you keep your brain active, unwind from stress or relax. Install to play now! Classic sudoku for beginners and advanced players. Whether you'd like to relax or keep your…
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 Sudoku.com. 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 7.22.0 is built with the iOS 26.2 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 26.2 SDK
Latest release notes
Version 7.22.0 · Oct 16, 2026
- Performance and stability improvements We hope that you enjoy playing Sudoku.com. We read all your reviews carefully to make the game even better for you. Please leave us some feedback to let us know why you love this game and what you'd like us to improve in it. Keep your mind active with Sudoku.com!
Questions
Does Sudoku.com work on iPhone Duo?
It works, but with black bars. Sudoku.com 7.22.0 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Sudoku.com 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 Sudoku.com 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 Sudoku.com 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 Sudoku.com 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 Sudoku.com within about a day of its release and update this page.
What can I do about the black bars until then?
Use Sudoku.com 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.