Really timely! I was about to start building the Apple sign-in flow for my RN app (already built the Google Sign-in). Supabase makes auth incredibly easy, thank you for that.
If you mind me giving some feedback: it took me a while to figure out how to properly build the auth flow with Expo/RN. In the end, I went with Expo AuthSession. IMO, you're missing an easy win with a template/getting-started guide for RN. The only one that exists uses email/password, and the OAuth flow is more convoluted than that :)