Supabase vs Firebase
for mobile startups.
Firebase still has the edge on mobile-first apps; Supabase is catching up.
What this actually means for mobile startups.
For mobile-first startups, Firebase still has a meaningful edge — push notifications via FCM, offline sync, native iOS/Android SDKs, and 15+ years of mobile-specific tooling. Supabase has caught up on auth and database but lags on the mobile-specific glue. Mobile-first consumer apps typically pick Firebase; mobile apps that are companions to a web SaaS often pick Supabase to share infrastructure. Either way, the choice locks in your backend for years.
mobile startups-specific gotchas
- FCM (Firebase push) is still the easiest mobile push solution
- Supabase's mobile SDKs need careful AsyncStorage adapter setup
- Firebase Crashlytics is best-in-class — replacement on Supabase is manual
- Offline-first patterns are mature on Firebase, emerging on Supabase
- Both work with React Native, but Firebase has richer native module support
A consumer fitness app on Firebase scales to 500k DAU on Firebase's default infrastructure. The team moves only specific subsystems (analytics) to Supabase later — Firebase remains the auth + push + storage layer.
Pick by use case.
Supabase
You want PostgreSQL, SQL, and an open-source escape hatch.
Firebase
You're mobile-first, need Google's scale, and SQL isn't a hard requirement.
Direct comparison.
| Feature | Supabase | Firebase |
|---|---|---|
| Database | PostgreSQL | Firestore (NoSQL) |
| Auth | Comprehensive | Comprehensive |
| Realtime | Realtime engine | Native |
| Edge functions | Yes | Cloud Functions |
| Self-hosting | Yes | No |
| Pricing predictability | Better | Pay per read/write |
We've shipped both.
If you're evaluating these as a mobile startups, brief us — we can save you weeks.
Talk to usCommon mobile startups questions.
Can we use both?
Yes — many apps use Firebase for mobile-specific glue (push, crashlytics) and Supabase for relational data.
Which is better for offline-first apps?
Firebase by a noticeable margin in 2026. Supabase Realtime + AsyncStorage is doable but more work.