App backend comparison

Supabase vs Firebase

Who will manage identity and application data?

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Supabase

Start with Supabase when your app needs relational data and you want authentication and storage beside it.

Combine PostgreSQL, authentication, file storage and realtime features in one backend.

Start with Supabase when your app needs relational data and you want authentication and storage beside it.

Prefer Firebase when a document-oriented mobile workflow is the deliberate architecture choice.

Project plans, compute and additional usage

Authentication identifies a user; row-level security still decides which rows they may access.

Sources checked 4 Oct 2026

Use managed app services, including authentication and Firestore document data.

Choose Firebase when its document model and mobile integrations match how your app works. Learn Security Rules before exposing data.

Start with Supabase instead when relationships, SQL and relational reporting are central.

Product-specific plans and pay-as-you-go usage

Firestore documents are a different data model from relational tables and joins.

Sources checked 4 Oct 2026

Keep one deliberate choice for this job, then connect it to the other parts of your app.

This comparison does not create services or estimate a bill. Confirm current terms with the provider.