Supabase vs. Firebase
Open-Source Postgres vs. Google BaaS
Supabase is an open-source Firebase alternative built on Postgres. Firebase is Google's mature BaaS with real-time sync. Your database philosophy determines the winner.
📊 Scoring Matrix
PostgreSQL (relational)
Firestore (NoSQL document)
Realtime subscriptions
Built-in real-time sync
Built-in (GoTrue)
Firebase Auth (mature)
Low (self-hostable, Postgres)
High (Google ecosystem)
Generous (500MB, 2 projects)
Generous (Spark plan)
Deno-based edge functions
Cloud Functions (mature)
📋 Executive Summary
Supabase for teams wanting Postgres power with no vendor lock-in. Firebase for rapid prototyping with real-time sync and Google ecosystem.
Supabase Pro starts at 25/mo. Firebase Blaze is pay-as-you-go. At scale, Supabase Postgres is typically 30-50% cheaper due to predictable SQL pricing.
🎯 Decision Framework
- ✓ PostgreSQL and relational data
- ✓ Open-source and self-hostable
- ✓ Complex queries and joins
- ✓ Low vendor lock-in priority
- ✓ Real-time mobile sync
- ✓ Google Cloud ecosystem
- ✓ Rapid prototyping speed
- ✓ Mature auth and hosting
Need relational data with joins? Supabase. Need real-time mobile sync? Firebase. Self-hosting important? Supabase. Google Cloud native? Firebase.
🌐 Market Context
Supabase valued at 2B (2024), growing 5x YoY. Firebase has millions of active projects and is deeply embedded in Google Cloud.
Supabase is the fastest-growing BaaS alternative. Firebase maintains dominance in mobile and rapid prototyping.
🛠️ Related Tools
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