In Github https://github.com/RevenueCat/purchases-ios/tree/main/Examples
That samples uses:
- Xcode 12.2
- iOS 14
- Swift 5
There is a example for Xcode 13 or 14 beta working at last stable RevenueCat framework?
All official documentation are obsolete at https://docs.revenuecat.com/docs - For example: Purchase module was rewrite to use RevenueCat and a lot of changes.