Games v2.1
Does Fish Sort Puzzle work on iPhone Duo?
Yes. Fish Sort Puzzle is built for iPhone Duo — it runs full screen on the 7.6-inch inner display and adapts its layout for the fold.
At a glance
- Inner display (7.6″)
- Built for Duo
- 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
- v2.1
- Oct 31, 2026
- Duo in release notes
- Not yet
About Fish Sort Puzzle
Fish Sort Puzzle is made by Shycheese and first came out on the App Store in May 2026. It's #39 on today's US App Store top charts. It has 21,108 ratings on the US App Store, averaging 4.9 stars. Version 2.1 came out on Oct 31, 2026 and needs iOS 13.0 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, Fish Sort Puzzle is #170 of them.
From its App Store listing:
Dive into an underwater adventure! Tap the fish and watch them swim into their new homes. Each aquarium displays the number of fish it needs. Collect the required amount of each type to complete the collection! Clear the bubbles below to make way for new ones from above. Eliminate all the bubbles to advance to the next level. Keep an eye on the temporary holding area! Any fish that don’t match the…
On the inner display
The app reaches the edges of the inner display. Text and controls stay a comfortable size instead of being blown up.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Fish Sort Puzzle. 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 Store,
App Store listing has screenshots made for iPhone Duo
The developer published 6 screenshots for iPhone Duo’s inner display.
- : Not confirmed yet → Built for Duo — its App Store listing has iPhone Duo screenshots
Latest release notes
Version 2.1 · Oct 31, 2026
- Added Login Feature - Halloween Event Arrives - Daily Event Optimization
Questions
Does Fish Sort Puzzle work on iPhone Duo?
Yes. Fish Sort Puzzle is built for iPhone Duo — it runs full screen on the 7.6-inch inner display and adapts its layout for the fold.
Does Fish Sort Puzzle 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 Fish Sort Puzzle 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.