server

In a restaurant, orders go to the kitchen, work happens there, and meals come back. A server is a computer on the internet that does work for your app and returns results.

Servers keep secrets safe and do heavy tasks your app should not, like charging cards, sending emails, or enforcing permissions. They also act as a single source of truth when many phones use the same data.

In this stack, Supabase runs servers for your database and accounts, and Modal can run longer jobs. During development, Expo runs a local dev server that serves your app to the simulator, which is not the same as the live app in the store.