Fix: "Your app doesn’t support 16 KB memory page sizes"

What triggers it, the official deadline, and the fix by stack. Sources checked 2026-10-02.

Google source	Quote
Page sizes support guide	“All apps targeting Android 15 (API level 35) and higher must support 16 KB memory page sizes on 64-bit devices on Google Play. Starting February 1, 2027, if your app updates don't support 16 KB memory page sizes, you won't be able to release these updates.”

Developers report the App Bundle Explorer’s "Memory page size" field reads "Does not support 16 KB" for a non-compliant build, and the Pre-launch report flags the same thing — we have not captured our own screenshot; the dated requirement above is read directly from Google’s page. Source: Bubble.io community forum thread hitting the warning.

Fix by stack

Flutter

We measured this directly: the Flutter engine shipped 4 KB-aligned native code through 3.15.x and newer, and is aligned from 3.16.0 on (evidence and Gradle line). Upgrade your Flutter SDK, not a Gradle dependency — libflutter.so comes from the engine build.

React Native / Expo

We measured this directly: com.facebook.react:react-android and com.facebook.react:hermes-android are both aligned from 0.77.0 on (react-android evidence, hermes-android evidence). Expo apps on a current SDK pull these transitively — check your resolved RN version with ./gradlew :app:dependencyInsight.

Unity

Unity’s own native player libraries (libunity.so, libil2cpp.so) aren’t in our measured 80+ library dataset yet, so we can’t give you a version boundary here. Run the free checker directly on your built APK/AAB (below) and see Unity’s own compatibility notes and Google’s build-in-Unity guide.

Not sure which of these applies to you? All four Google Play native-code deadlines are on one page, and the free dependency checker or check16k.py will tell you if 16 KB alignment specifically is your problem.

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