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CubeAway - 3DPuzzle app icon

GOODROID,Inc.

Games v1.7.0

Does CubeAway work on iPhone Duo?

It works, but with black bars. CubeAway 1.7.0 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.

Black barsFrom the app's buildLast checked
Illustration: app runs in a phone-sized window with black bars on both sides
CubeAway on the inner display — black bars

At a glance

Inner display (7.6″)
Black bars
Outer display (5.4″)
Works normally
Built with
iOS 26.2 SDK
Version 1.7.0, read Oct 24, 2026
iPad version
Yes
Layout already handles big screens
Latest version
v1.7.0
Oct 21, 2026
Duo in release notes
Not yet

About CubeAway

CubeAway is made by GOODROID,Inc. and first came out on the App Store in March 2026. It's #15 on today's US App Store top charts. It has 145,278 ratings on the US App Store, averaging 4.7 stars. Version 1.7.0 came out on Oct 21, 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, CubeAway is #99 of them.

From its App Store listing:

Welcome to *CubeAway - 3DPuzzle*. Featuring a simple yet beautiful design, this logic puzzle game will test your thinking skills, concentration, and creativity. Carefully navigate the intricately intertwined maze of arrows and remove them all without making a single mistake. Each stage presents a unique challenge that combines logical thinking, timing, and spatial awareness. Enjoy a rewarding puzz…

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.

Why some apps show black bars on iPhone Duo

In Split View

iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including CubeAway. 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.

How Split View works on iPhone Duo

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

  1. App build,

    Version 1.7.0 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 1.7.0 · Oct 21, 2026

Get ready for the November Season Pass! Added new gimmicks! A brand-new look is coming soon!

Questions

Does CubeAway work on iPhone Duo?

It works, but with black bars. CubeAway 1.7.0 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.

Does CubeAway 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 CubeAway 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 CubeAway 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 CubeAway 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 CubeAway within about a day of its release and update this page.

What can I do about the black bars until then?

Use CubeAway 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.