Games v4.2.7
Does Block Crush！ work on iPhone Duo?
It works, but with black bars. Block Crush！ hasn't been updated for iPhone Duo's inner display yet, so it runs in a phone-sized window.
At a glance
- Inner display (7.6″)
- Black bars
- Outer display (5.4″)
- Works normally
- Built with
- Not read yet
- We read each app's build SDK after it updates
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v4.2.7
- Nov 4, 2026
- Duo in release notes
- Not yet
About Block Crush！
Block Crush！ is made by Wonderful Studio and first came out on the App Store in August 2022. It has 168,281 ratings on the US App Store, averaging 4.8 stars. Version 4.2.7 came out on Nov 4, 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, Block Crush！ is #93 of them.
From its App Store listing:
Block Crush is a classic block puzzle game designed around clear boards, simple rules, and structured logic. It offers a focused block puzzle experience where gameplay is easy to understand from the first move and remains consistent throughout each session. In this block puzzle game, players place blocks of different shapes onto the board to complete full rows or columns. Clearing lines creates sp…
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 Block Crush！. 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 4.2.6 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 4.2.7 · Nov 4, 2026
This update brings performance improvements and a smoother gameplay experience.
Questions
Does Block Crush！ work on iPhone Duo?
It works, but with black bars. Block Crush！ hasn't been updated for iPhone Duo's inner display yet, so it runs in a phone-sized window.
Does Block Crush！ 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 Block Crush！ 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 Block Crush！ 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 Block Crush！ 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 Block Crush！ within about a day of its release and update this page.
What can I do about the black bars until then?
Use Block Crush！ 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.