Exact spec references and ASO guides for indie app developers - written to answer the question you actually searched.

Indie devs on X keep saying the same thing: designing App Store screenshots takes forever. Here’s a practical AI workflow that ships store-ready frames in minutes - without Figma babysitting.

How Product Page Optimization (PPO) and Custom Product Pages work on the App Store - what you can A/B test, how to read results, and how to ship screenshot variants that actually move conversion.

How to design App Store and Google Play screenshots that convert - first-three rules, captions, storytelling, localization, and what to avoid in 2026.

Exact character limits for every App Store Connect and Google Play metadata field - name, subtitle, keywords, promo text, descriptions - plus how to use each one.
Every required app icon dimension for iOS, iPadOS, Android, Google Play, and the density buckets Xcode and Android Studio still expect - plus the format rules that cause rejection.

Every required and optional screenshot dimension for iPhone, iPad, Mac, Watch, Apple TV, Vision Pro, and Google Play - straight from Apple and Google's current specs.