Database
Supabase
Supabase gives the React Native client a hosted Postgres it can query directly over HTTPS, with realtime subscriptions for screens that update while the app is open. Because a mobile build sits on devices you no longer control, every table the client touches needs row level security written as though the anon key is public, which it effectively is. Keep Stripe-derived order and payout columns in tables the client may read but only the service role can write.