Firebase vs Supabase for iOS Apps: 2026 Backend Comparison

Firebase is Google's mature BaaS with deep iOS SDK integration. Supabase is the open-source Postgres-based alternative with a growing Swift SDK.

Firebase vs Supabase — Feature Comparison

Feature	Firebase	Supabase
Database	Firestore (NoSQL)	Postgres (SQL)
iOS SDK maturity	Excellent	Good, improving
Realtime	Firestore listeners	Postgres replication
Auth providers	Many (Apple, Google, phone)	Many (Apple, Google, OAuth)
Open source	No	Yes
Self-host option	No	Yes
Vendor lock-in	High	Low
Push notifications	FCM built-in	Bring your own (APNs)

Verdict

Firebase for fastest iOS time-to-market, push, and analytics. Supabase when you want SQL, open source, and the option to self-host later.

Choose Firebase if

• Fast MVPs
• Apps needing FCM push
• Teams wanting Crashlytics + Analytics in one
• Realtime chat apps

Choose Supabase if

• Apps needing SQL/relational data
• Open-source preference
• Teams wanting easy migration off-vendor
• Postgres-native workflows

Frequently Asked Questions

Which is cheaper at scale?

Supabase tends to be cheaper for data-heavy workloads. Firebase wins at low volume with its generous free tier.

Can I use both?

Yes — many teams use Firebase for analytics/crashlytics/push and Supabase for the application database.