Supabase vs Firebase for React Native in 2026

This is the comparison I would give a founder picking a backend for their Expo app today. I have shipped both. I run a Supabase-backed boilerplate and a Convex one, so my bias is documented — but Firebase is still a real option in 2026 and pretending otherwise would be useless to you.

If you would rather not pick at all, the React Native boilerplate chooser routes you to a starter based on your situation.

#How they actually differ

Both platforms give you auth, database, storage, and serverless functions. The differences come from the database model and the company behind them.

• Supabase is open-source software wrapped around Postgres, with auth, storage, edge functions, and realtime built on top. You can self-host the same stack the cloud product runs.
• Firebase is a closed-source Google product. Firestore is a custom NoSQL document database. Auth, storage, and functions are tightly tied to Google Cloud.

Everything below cascades from that.

#Quick comparison

| Dimension | Supabase (2026) | Firebase (2026) | | --- | --- | --- | | Database | Postgres (relational, SQL) | Firestore (document, NoSQL) or Realtime DB | | Auth | Email, OAuth, magic link, MFA, SSO | Email, OAuth, phone, anonymous, custom | | Realtime | Postgres Changes + Broadcast | Firestore listeners, Realtime DB | | Storage | S3-compatible | GCS-backed | | Functions | Edge Functions (Deno) + RPC | Cloud Functions (Node, Python) | | Pricing model | Per-resource, transparent | Per-operation, hard to predict at scale | | Free tier (2026) | Generous (500 MB DB, 50k MAU auth) | Generous, but functions paid early | | Vendor lock-in | Low (it is Postgres) | High (Firestore queries don't translate) | | Self-host | Yes, official Docker images | No | | Type safety | TypeScript types from schema | TypeScript via codegen tools | | Ecosystem maturity | Younger, fast-moving | Mature, slower-moving | | Mobile SDK quality | Good for React Native | Excellent for React Native | | Push notifications | Use Expo Push or external | FCM included, tight integration | | Crash reporting | External (Sentry) | Crashlytics included | | Analytics | External (PostHog) | Google Analytics for Firebase |

#Where Supabase pulls ahead in 2026

#You write SQL, and SQL is a transferable skill

This is the biggest practical difference. Postgres has been around for 30 years. The SQL you write for your Supabase app is the same SQL you would write for any other Postgres-backed product. If you switch backends in three years, your queries port. Your schema ports. Your data ports.

Firestore queries are unique to Firestore. The "switch off Firebase" project is a substantial engineering effort because you cannot just dump and reimport — you have to rewrite the data model.

For early-stage products, lock-in seems abstract. For a product five years in, it is a real cost.

#Row-level security in Postgres is excellent

Supabase leans hard on Postgres RLS for authorization. You write policies once, in SQL, and they apply equally to direct queries, RPCs, and realtime subscriptions. The auth model is "the database knows who you are."

Firebase Security Rules are powerful but they are their own DSL, only apply to Firestore and Storage, and are easy to get wrong. Most production Firebase apps end up routing sensitive operations through Cloud Functions, which adds latency and complexity.

#Pricing is more predictable

Firebase charges per operation: per document read, per document write, per function invocation. A poorly indexed query or a chatty client can blow up your bill in a way that does not happen as often on Supabase, which charges per resource (database size, bandwidth, compute).

For a small app, both are fine. At scale, Supabase tends to be cheaper and more predictable. There are real horror stories from 2022 – 2024 of Firestore bills jumping 20x after a launch. Those stories have not stopped in 2026.

#The TypeScript story is tighter

Supabase generates TypeScript types from your Postgres schema with supabase gen types typescript. The types match the database exactly. Auto-completion in your client code reflects your tables and columns.

Firebase has type-safe codegen tools too (FireCMS, fire-types) but they are community projects, not first-party. The default Firestore SDK is loosely typed.

#You can leave whenever you want

Supabase is open source. If the company changes pricing, you self-host the same stack. The cost is operational, not architectural.

Firebase has no escape hatch. If Google deprecates a feature (it has happened — see Firebase Dynamic Links sunsetting), you migrate.

#Where Firebase pulls ahead in 2026

I am not going to pretend Firebase has no strengths. The honest list:

#Push notifications and Crashlytics are first-party

If you go with Supabase, you wire push notifications via Expo Push or a third-party service, and crash reporting via Sentry or similar. Both of those are easy, but they are extra services.

Firebase ships push (FCM), crash reporting (Crashlytics), and performance monitoring as integrated services. For a team that wants the entire mobile platform in one place, that is real convenience.

#Mature SDK with deep React Native integration

@react-native-firebase has been around forever and is rock-solid. It supports every Firebase product. It handles edge cases (background fetch, app state transitions) better than most third-party SDKs.

Supabase's React Native client is good but it is younger. Edge cases are still being smoothed.

#Realtime fan-out at scale

For apps that broadcast updates to thousands of concurrent listeners (chat apps, multiplayer games, live dashboards), Firestore's realtime is battle-tested. Supabase Realtime has improved a lot in 2026 but Firebase has more production scale behind it.

#Anonymous auth and incremental sign-up

Firebase makes "anonymous user, then upgrade to a real account" a one-line operation. Supabase supports this in 2026 too, but Firebase's flow is smoother.

#Phone auth as a built-in primitive

Phone OTP login works out of the box on Firebase with sane SMS pricing. On Supabase you wire it via Twilio or a similar provider, which is a few extra steps and a separate billing relationship.

#What about Convex?

Convex is the third option worth knowing about in 2026. It is a TypeScript-first reactive backend with a document model and server-side functions written in TypeScript. We wrote a focused comparison in Supabase vs Convex for React Native MVPs.

Short version: Convex is excellent for TypeScript teams that want reactivity baked into the framework, no SQL, and a single language across client and server. It loses on portability (closed source) and on the maturity of the SQL story for analytics-heavy apps.

If you are picking between Supabase, Firebase, and Convex, the rule that works:

• Pick Supabase if you want SQL, openness, and predictable pricing.
• Pick Firebase if you want Google's mobile platform in one bundle and push/crash/analytics integrated.
• Pick Convex if you want TypeScript-first reactivity and you are willing to accept closed-source.

#Pricing in 2026 (rough numbers)

Both platforms have a free tier that covers genuine early-stage usage. Past that:

• Supabase Pro: $25/month base, includes a meaningful amount of database, bandwidth, and edge function invocations.
• Firebase Blaze: pay-as-you-go from dollar one once you exceed the free tier, with per-operation billing.

For an app at 10,000 MAU with moderate database use:

• Supabase: typically $25 – $80/month.
• Firebase: typically $40 – $200/month, depending on read/write patterns.

For an app at 100,000 MAU:

• Supabase: typically $200 – $600/month.
• Firebase: typically $400 – $1,500/month.

These are rough — your usage pattern matters more than the platform. The pattern is consistent: Supabase grows more linearly with size, Firebase grows more aggressively with operation count.

#Migration cost (in case you ever want to leave)

Leaving Supabase is, in the worst case, a pg_dump and a pg_restore into a different Postgres. Your queries port. Your schema ports.

Leaving Firebase requires re-modeling your data, rewriting your queries, and migrating your auth in a way that preserves user IDs. Teams who have done this report 3 – 12 months of engineering work.

This is not a reason to never use Firebase. It is a reason to think about the lock-in before you pick.

#Decision tree

For most new React Native apps in 2026, the answers point to Supabase. That is why our default boilerplate stack uses it.

#FAQ

Is Supabase production-ready in 2026?

Yes. Supabase has been used in production by thousands of apps for years. Major outages are rare. The free tier is now generous enough that you can prototype seriously without paying.

Is Firebase being deprecated?

No. Google has continued to invest in Firebase, though some sub-products (Dynamic Links, Hosting frameworks) have been pruned. Firestore, Auth, Functions, Cloud Messaging, and Crashlytics are all actively maintained.

Can I use both?

Yes, and some teams do — Firebase for FCM and Crashlytics, Supabase for database and auth. It is more complexity than most apps need, but it is a real pattern.

Which has better React Native SDK quality?

Firebase, narrowly. @react-native-firebase is more mature and has handled more edge cases. Supabase's RN SDK is solid in 2026 but younger.

Is Convex better than Supabase?

For TypeScript-only teams that prize reactivity, often yes. For teams that want SQL, openness, or mature analytics, Supabase. Read the Supabase vs Convex piece for the full breakdown.

What about self-hosting Supabase?

Supported and used in production by many teams. It is operational work — you manage Postgres, you manage upgrades — but it is the same software the cloud product runs.

#Further reading

• Supabase vs Convex for React Native MVPs
• React Native Authentication with Supabase
• Best React Native Boilerplate 2026
• Cost to Build a React Native App 2026