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In this video, Beto breaks down how to make your Expo app faster by understanding JavaScript and UI threads, debugging performance issues, and using Worklets and Threads effectively. Resources Evan's Blog: https://expo.dev/blog/best-practices-for-reducing-lag-in-expo-apps React Compiler in Expo: https://docs.expo.dev/guides/react-compiler React Native Worklets: https://docs.swmansion.com/react-native-worklets If you need a high-performance list check out: Legend List: https://github.com/LegendApp/legend-list Flash List: https://shopify.github.io/flash-list Timestamps 00:00 - Intro 00:41 - Expo App Development Best Practices 02:47 - Understanding the JavaScript and UI Threads 07:19 - Debugging Performance Issues 11:48 - How to use React Compiler with Expo 15:08 - Avoiding JS Thread Blocking (Worklets + Threads Demo) 24:08 - Recap #Expo #ReactNative #reactnativetutorial