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One of my favorite things about the Demos app is that every update generates a slightly different app icon, so it's always a nice little surprise.

Enzo Manuel Mangano

@reactiive.io

2 July

1. the idea is that the app icon is designed via code (using headless Skia) and gets re-created on every build

Enzo Manuel Mangano

@reactiive.io

2 July

2. to generate a new app icon on every build i'm using a ci hook from @expo.dev called "eas-build-pre-install". It runs automatically before installing the deps on EAS.

Enzo Manuel Mangano

@reactiive.io

3. to avoid too much randomness and keep the icon easy to recognize, I'm only updating the display text (e.g. 122, the number of animations) and the spiral.

2/7/26, 6:30 pm0 reposts1 like

Enzo Manuel Mangano

@reactiive.io

2 July

4. here's the TestFlight if you'd like to get these small surprises too 👀 testflight.apple.com/join/uB9PQHuT

testflight.apple.comJoin the Demos. betaAvailable on iOS

Enzo Manuel Mangano

@reactiive.io

2 July

5. True. That's quite a unique use case, but you could reuse the same trick to generate wallpapers, backgrounds, or even your GitHub thumbnails. The code is fully open source if you'd like to have a look! github.com/enzomanuelm...

github.comGitHub - enzomanuelmangano/demos: An ongoing collection of React Native animations crafted with Reanimated, Gesture Handler, and Skia.An ongoing collection of React Native animations crafted with Reanimated, Gesture Handler, and Skia. - enzomanuelmangano/demos