cross-platform-mobile

Build, upgrade, debug, or ship cross-platform iOS/Android apps with Expo (React Native), bare React Native, or Flutter. Use this skill whenever the user mentions Expo, EAS, Expo Router, React Native, Flutter, Dart, TestFlight, Google Play target API level, app store submission, SDK upgrades, config plugins, native module errors, over-the-air updates, or asks which mobile stack to pick, even if they only say "mobile app" or "app for iPhone and Android". Not for websites, backend-only work, or fully native Swift/Kotlin apps.