Games v13.6.8
Does Screwdom work on iPhone Duo?
It works, but with black bars. Screwdom 13.6.8 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 13.6.8, read Nov 1, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v13.6.8
- Oct 30, 2026
- Duo in release notes
- Not yet
About Screwdom
Screwdom is made by Zego Global Pte Ltd and first came out on the App Store in January 2025. It's #93 on today's US App Store top charts. It has 118,499 ratings on the US App Store, averaging 4.5 stars. Version 13.6.8 came out on Oct 30, 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, Screwdom is #106 of them.
From its App Store listing:
Screwdom is a challenging and brain-teasing screw master 3D game that will put your problem-solving skills to the ultimate test. This exciting game combines the thrill of sorting with the fun of screw master 3D, offering a perfect balance of relaxation and brain-teasing action. Why Choose Screwdom? • Perfect for All Ages: Whether you're a casual player or a hardcore screw puzzle solver, this screw…
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 Screwdom. 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 13.6.8 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 13.6.8 · Oct 30, 2026
Fixed an issue related to in-app purchases.
Questions
Does Screwdom work on iPhone Duo?
It works, but with black bars. Screwdom 13.6.8 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Screwdom 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 Screwdom 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 Screwdom 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 Screwdom 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 Screwdom within about a day of its release and update this page.
What can I do about the black bars until then?
Use Screwdom 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.