We have a react-native 0.66.5 app that we managed to migrate from XCode 14.2 (Intel) to XCode15.3 (Apple Silicon). There were four specific problems... Build error mentioning Pods/RCT-Folly and unary_function Solution: https://github.com/facebook/react-native/issues/37748#issuecomment-1580334650 Build error mentioning Yoga and || Solution: https://github.com/facebook/react-native/issues/36758#issuecomment-1496210081 Build error mentioning Cycle inside This one was due to our app using both the ImageNotification and Firebase pods. Solution: https://github.com/invertase/react-native-firebase/issues/7360#issuecomment-1731859921 Build warnings about deployment target versions and 11.0 We were getting a warning for the app itself and each pod. Just warnings so the app built successfully, but best to fix it. It was easy to set to 12.0 for the app in XCode15 (Deployment Target) and Podfile (platform ) To set it to 12.0 in all the pods just tweak your podfile: https://stackoverflow.com/a/51416359/281724 Starting 29th April 2024 Apple are only letting you publish apps (including updates) if they're built with XCode 15+ (iOS SDK 17). So it's definitely something you need to do to keep yr app alive. Good luck!