Apps need somewhere to keep data and a way to know who is signed in.
Direct answer
Supabase is a backend platform built on a Postgres database. It provides tables, user authentication, file storage and automatically generated APIs, so front-end apps can store data without a custom server. Turn on row level security so users can only access the data they should.
What you get
- A hosted relational database.
- Sign-in with email and other providers.
- File storage.
- APIs and client libraries.
Basic idea
- Create a project.
- Design tables.
- Turn on row level security and write policies.
- Use the public key in the browser and keep any service key secret on the server.
- Connect your app.
A simple policy idea
Allow a user to read and write only rows where the row's user_id equals their own ID.
Cautions
- Never expose the service role key in front-end code.
- Test policies with two different users.
Where Teyro fits
Teyro's Vibe Coding: Build Apps with AI course turns this into short lessons you can play in a few minutes a day. It has 80 lessons, and you can start free.
The bottom line
A convenient backend for apps, as long as you configure security properly. Check current features and limits on the official site.
