Supabase vs Firebase - which should I pick in 2026?

by Jamie Winstead1mo ago212 views6 repliessupabasefirebasebackenddatabase

Need a backend for my mobile app. Both Supabase and Firebase seem solid. I know SQL but also comfortable with NoSQL. Main features needed: auth, database, file storage, real-time subscriptions. What are the real trade-offs beyond the marketing pages?

3 Replies

Rachel Cortez1mo ago

The data modeling difference matters a lot. Firebase (NoSQL) forces you to duplicate data for different access patterns. Supabase (SQL) lets you normalize and use JOINs. If your data has relationships (and most apps do), Supabase saves you from a lot of pain. Also: Firebase vendor lock-in is real. Moving off Firestore is painful. Moving off Supabase means moving off Postgres, which every cloud provider supports.

Cecily Ewing1mo ago

I have used both extensively. Here is my honest comparison: **Supabase wins on:** - PostgreSQL (real SQL, powerful queries, extensions) - Open source (can self-host) - Row Level Security (auth rules at the database level) - Better pricing at scale **Firebase wins on:** - Mobile SDKs (more mature) - Offline sync (Firestore handles this well) - Push notifications (FCM is built-in) - Faster initial setup For a new project in 2026: Supabase unless you specifically need offline-first mobile sync.

Brandon Algoff1mo ago

Quick addition: Supabase Edge Functions are solid now and support Deno. Firebase Cloud Functions have cold start issues that are annoying for user-facing operations. This has been a frustration point for several teams I know.