Supabase vs Firebase in 2025: The Developer's Honest Comparison
Supabase and Firebase are the two dominant backend-as-a-service platforms. Both handle auth, realtime data, and file storage. But they are fundamentally different.
| Feature / Aspect | Supabase | Firebase |
|---|---|---|
| Database | PostgreSQL (relational, SQL) | Firestore (NoSQL, documents) |
| Querying | Full SQL + joins + views | Collection queries only, no joins |
| Access Control | Row-Level Security (database-enforced) | Security Rules (app-enforced) |
| Realtime | WebSocket subscriptions (strong) | Native realtime sync (excellent) |
| Auth | Email, OAuth, magic link, SSO, phone | Same + Google ecosystem native |
| Pricing | Predictable (database size + bandwidth) | Per-operation (can spike) |
| Open Source | Yes — self-hostable | No (Google proprietary) |
| WeWeb Integration | Native connector | Manual API setup |
When to choose each
Supabase — Better for most apps
Choose Supabase when you need better for most apps. Our team uses Supabase for the majority of our client projects where it applies.
Build with us using Supabase →Firebase — Better for realtime mobile
Choose Firebase when you need better for realtime mobile.
Our verdict
Supabase wins for: SaaS platforms, multi-tenant apps, anything with complex relational data, WeWeb frontends, and teams that want SQL.
Firebase wins for: simple real-time mobile apps, Google ecosystem products, teams already in GCP, FlutterFlow apps where Firestore DX is preferable.
At The App Studio, 90% of our backends are Supabase. The PostgreSQL foundation, Row-Level Security, and predictable pricing are decisive for production SaaS.
Not sure which to choose?
Book a free consultation →Supabase vs Firebase: common questions
Which is better: Supabase or Firebase?
Supabase wins for: SaaS platforms, multi-tenant apps, anything with complex relational data, WeWeb frontends, and teams that want SQL.
When should I use Supabase instead of Firebase?
Supabase is better for most apps. Supabase wins for: SaaS platforms, multi-tenant apps, anything with complex relational data, WeWeb frontends, and teams that want SQL.
Is Firebase cheaper than Supabase?
See our full pricing comparison above. The right choice depends on your use case, not just price.
Can The App Studio build with Supabase?
Yes — we are certified experts in the no-code and low-code stack. Book a free call to discuss your project and we'll recommend the right tool for your use case.