Principles
- One idea per screenshot, with a short headline of a few words.
- Show the real app in use, not an abstract illustration.
- Lead with the benefit, then the feature behind it.
- Keep text large enough to read on a small phone.
- For Arabic, build the screens right-to-left, with Arabic headlines, instead of reusing the English frames.
A simple structure
- Screenshot 1: the main promise, for example the result the user wants.
- Screenshot 2: the most used feature, shown in action.
- Screenshot 3 onwards: secondary features, social proof and a reason to install now.
Test, do not guess
Both stores let you test alternative creatives: Product Page Optimization on the App Store and store listing experiments on Google Play. Test one change at a time and let each run long enough to reach a clear result.