Is Supabase better than Firebase?

Neither is universally better. Supabase excels with PostgreSQL features and open-source flexibility. Firebase offers deeper Google ecosystem integration and more mature services.

Can I migrate from Firebase to Supabase?

Yes, but it requires effort. Data migration is straightforward, but authentication and real-time queries need reconfiguration. Plan for 2-4 weeks for a typical migration.

Which is cheaper: Supabase or Firebase?

Supabase is often cheaper for database-heavy applications due to its PostgreSQL pricing model. Firebase can be cheaper for read-heavy apps with good caching.

Supabase vs Firebase 2026: Complete Backend Comparison | Deventee

Backend as a Service in 2026

Choosing between Supabase and Firebase is one of the most common decisions for mobile app projects. Both offer compelling features, but they're built on fundamentally different philosophies.

Philosophy and Architecture

Firebase: The Google Way

Firebase is a proprietary suite of tools deeply integrated with Google Cloud:

NoSQL-first: Firestore and Realtime Database
Serverless: Cloud Functions for backend logic
Integrated: Tight coupling with Google services
Managed: Google handles everything

Supabase: The Open-Source Alternative

Supabase is an open-source Firebase alternative built on PostgreSQL:

SQL-first: PostgreSQL at its core
Extensible: PostgREST, Realtime, and custom functions
Portable: Can self-host or use managed service
Standards-based: SQL, REST, WebSockets

Database Comparison

Data Modeling

Aspect	Firebase (Firestore)	Supabase (PostgreSQL)
Model	Document/NoSQL	Relational/SQL
Schema	Flexible	Structured
Joins	Denormalization	Native JOINs
Queries	Limited operators	Full SQL
Indexing	Composite indexes	B-tree, GIN, GiST
Full-text search	Limited	Native

Query Capabilities

Firestore:

javascript

class="text-[class="text-[#6a9955]">#6a9955]">// Limited to simple queries
const orders = await db.collection(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;orders&#class="text-[#b5cea8]">039;)
  .where(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;userIdclass="text-[#ce9178]">&#class="text-[#b5cea8]">039;, &#class="text-[#b5cea8]">039;==&#class="text-[#b5cea8]">039;, userId)
  .where(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;statusclass="text-[#ce9178]">&#class="text-[#b5cea8]">039;, &#class="text-[#b5cea8]">039;==class="text-[#ce9178]">&#class="text-[#b5cea8]">039;, &#class="text-[#b5cea8]">039;pending&#class="text-[#b5cea8]">039;)
  .orderBy(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;createdAtclass="text-[#ce9178]">&#class="text-[#b5cea8]">039;, &#class="text-[#b5cea8]">039;desc&#class="text-[#b5cea8]">039;)
  .limit(class="text-[#b5cea8]">20)
  .get();

Supabase:

javascript

class="text-[class="text-[#6a9955]">#6a9955]">// Full SQL power including joins, aggregations
const { data: orders } = await supabase
  .from(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;orders&#class="text-[#b5cea8]">039;)
  .select(class="text-[#ce9178]">`
    *,
    items:order_items(
      *,
      product:products(name, price)
    ),
    user:users(name, email)
  `)
  .eq(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;user_id&#class="text-[#b5cea8]">039;, userId)
  .eq(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;statusclass="text-[#ce9178]">&#class="text-[#b5cea8]">039;, &#class="text-[#b5cea8]">039;pending&#class="text-[#b5cea8]">039;)
  .order(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;created_at&#class="text-[#b5cea8]">039;, { ascending: false })
  .limit(class="text-[#b5cea8]">20);

Performance Characteristics

Workload	Firebase	Supabase
Simple reads	Excellent	Excellent
Complex queries	Limited	Excellent
Write-heavy	Good	Excellent
Real-time sync	Excellent	Good
Offline support	Excellent	Good (improving)

Authentication

Supported Providers

Provider	Firebase	Supabase
Email/Password	✅	✅
Google	✅	✅
Apple	✅	✅
Facebook	✅	✅
Twitter	✅	✅
GitHub	✅	✅
Phone/SMS	✅	✅
Magic Link	❌	✅
Anonymous	✅	✅
SAML/SSO	✅ (paid)	✅ (Enterprise)

Authentication Code Comparison

Firebase:

dart

#6a9955]">// Flutter + Firebase Auth
Future<UserCredential> signIn(String email, String password) async {
  return await FirebaseAuth.instance.signInWithEmailAndPassword(
    email: email,
    password: password,
  );
}

#6a9955]">// Listen to auth state
FirebaseAuth.instance.authStateChanges().listen((User? user) {
  if (user != null) {
    #6a9955]">// User is signed in
  }
});

Supabase:

dart

#6a9955]">// Flutter + Supabase Auth
Future<AuthResponse> signIn(String email, String password) async {
  return await supabase.auth.signInWithPassword(
    email: email,
    password: password,
  );
}

#6a9955]">// Listen to auth state
supabase.auth.onAuthStateChange.listen((data) {
  final AuthChangeEvent event = data.event;
  final Session? session = data.session;
  #6a9955]">// Handle auth state
});

Real-Time Features

Firebase Realtime Database

javascript

class="text-[class="text-[#6a9955]">#6a9955]">// Real-time listener
const messagesRef = ref(db, &class="text-[#6a9955]">#class="text-[#b5cea8]">039;chats/class="text-[#ce9178]">&#class="text-[#b5cea8]">039; + chatId + &#class="text-[#b5cea8]">039;/messages&#class="text-[#b5cea8]">039;);
onValue(messagesRef, (snapshot) => {
  const messages = snapshot.val();
  updateUI(messages);
});

Strengths:

Battle-tested at massive scale
Excellent offline sync
Automatic conflict resolution
Optimistic UI updates

Supabase Realtime

javascript

class="text-[class="text-[#6a9955]">#6a9955]">// Real-time subscription
const channel = supabase
  .channel(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;messages&#class="text-[#b5cea8]">039;)
  .on(
    &class="text-[#6a9955]">#class="text-[#b5cea8]">039;postgres_changes&#class="text-[#b5cea8]">039;,
    { event: &class="text-[#6a9955]">#class="text-[#b5cea8]">039;*class="text-[#ce9178]">&#class="text-[#b5cea8]">039;, schema: &#class="text-[#b5cea8]">039;publicclass="text-[#ce9178]">&#class="text-[#b5cea8]">039;, table: &#class="text-[#b5cea8]">039;messages&#class="text-[#b5cea8]">039;, filter: class="text-[#ce9178]">`chat_id=eq.${chatId}` },
    (payload) => {
      handleChange(payload);
    }
  )
  .subscribe();

Strengths:

Database-level changes (triggers work)
Row-level security applies
Presence tracking built-in
Broadcast for custom events

Real-Time Comparison

Feature	Firebase	Supabase
Latency	<100ms	<100ms
Offline sync	Excellent	Good
Conflict resolution	Automatic	Manual
Scale	1M+ connections	100K+ connections
Filtering	Client-side	Server-side

Storage

File Storage Comparison

Feature	Firebase Storage	Supabase Storage
CDN	Built-in	Built-in
Resumable uploads	✅	✅
Transformations	Firebase Extensions	Built-in (basic)
Security rules	Firebase rules	Postgres RLS
Max file size	5GB	Unlimited

Storage Code Example

Firebase:

dart

#6a9955]">// Upload file
final ref = FirebaseStorage.instance.ref(&#039;users/$userId/avatar.jpg&#039;);
await ref.putFile(file);
final url = await ref.getDownloadURL();

Supabase:

dart

#6a9955]">// Upload file
await supabase.storage
  .from(&#039;avatars&#039;)
  .upload(&#039;user_$userId/avatar.jpg&#039;, file);
final url = supabase.storage
  .from(&#039;avatars&#039;)
  .getPublicUrl(&#039;user_$userId/avatar.jpg&#039;);

Functions and Backend Logic

Firebase Cloud Functions

javascript

class="text-[class="text-[#6a9955]">#6a9955]">// HTTP function
exports.processOrder = functions.https.onCall(async (data, context) => {
  class="text-[class="text-[#6a9955]">#6a9955]">// Verify authentication
  if (!context.auth) throw new Error(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;Unauthorized&#class="text-[#b5cea8]">039;);
  
  class="text-[class="text-[#6a9955]">#6a9955]">// Process order
  const order = await processOrderLogic(data);
  return order;
});

class="text-[class="text-[#6a9955]">#6a9955]">// Database trigger
exports.onOrderCreated = functions.firestore
  .document(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;orders/{orderId}&#class="text-[#b5cea8]">039;)
  .onCreate(async (snap, context) => {
    const order = snap.data();
    await sendOrderConfirmation(order);
  });

Supabase Edge Functions

typescript

class="text-[class="text-[#6a9955]">#6a9955]">// Edge function (Deno)
Deno.serve(async (req) => {
  const { orderId } = await req.json();
  
  class="text-[class="text-[#6a9955]">#6a9955]">// Access database
  const { data: order } = await supabaseAdmin
    .from(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;orders&#class="text-[#b5cea8]">039;)
    .select(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;*&#class="text-[#b5cea8]">039;)
    .eq(&class="text-[#6a9955]">#class="text-[#b5cea8]">039;id&#class="text-[#b5cea8]">039;, orderId)
    .single();
  
  class="text-[class="text-[#6a9955]">#6a9955]">// Process order
  const result = await processOrder(order);
  
  return new Response(JSON.stringify(result));
});

Functions Comparison

Aspect	Firebase Functions	Supabase Edge
Runtime	Node.js	Deno
Cold start	1-3 seconds	<500ms
Database triggers	✅	Via webhooks
Scheduling	✅	Via pg_cron
Deployment	Firebase CLI	Supabase CLI

Pricing Comparison

Free Tier

Resource	Firebase	Supabase
Database storage	1GB (Firestore)	500MB
Database reads	50K/day	Unlimited
Database writes	20K/day	Unlimited
Auth users	Unlimited	Unlimited
Storage	5GB	1GB
Functions invocations	2M/month	500K/month

Scaling Costs (Hypothetical App)

Scenario: 50K MAU, 10GB database, 100GB storage

Item	Firebase (est.)	Supabase (est.)
Database	$100-300/month	$25/month
Auth	Free	Free
Storage	$20/month	$25/month
Functions	$50-100/month	$10/month
Total	$170-420/month	$60/month

Developer Experience

CLI and Tooling

Tool	Firebase	Supabase
CLI	Firebase CLI	Supabase CLI
Local development	Emulators	Docker + CLI
Database GUI	Console (limited)	Studio (full)
Type generation	Manual	Automatic
Migrations	Manual	Built-in

SDK Quality

Platform	Firebase	Supabase
Flutter	Excellent	Excellent
React Native	Excellent	Good
iOS (Swift)	Excellent	Good
Android (Kotlin)	Excellent	Good
Web	Excellent	Excellent

When to Choose Firebase

Choose Firebase when:

Google ecosystem: Using GCP, Analytics, AdMob
Offline-first: Complex offline sync requirements
Quick prototyping: Fastest path to working product
NoSQL fit: Document data model is natural
Mobile-first: Deep mobile platform integration

When to Choose Supabase

Choose Supabase when:

Relational data: Complex relationships between entities
SQL expertise: Team knows SQL well
Cost sensitivity: Predictable pricing matters
Self-host option: Need to own infrastructure
PostgreSQL features: Full-text search, extensions, etc.
Vendor independence: Want exit strategy

Migration Considerations

Firebase to Supabase

Effort estimate: 2-4 weeks for typical app

Migration steps:

Export Firestore data to JSON
Design PostgreSQL schema
Transform and import data
Update authentication code
Rewrite queries from NoSQL to SQL
Update real-time subscriptions
Migrate storage

Supabase to Firebase

Effort estimate: 1-3 weeks for typical app

Migration steps:

Export PostgreSQL data
Design Firestore collections
Denormalize data where needed
Update authentication code
Rewrite queries for Firestore
Update real-time listeners
Migrate storage

Conclusion

Both platforms are excellent choices in 2026. The decision comes down to:

Factor	Winner
Relational data	Supabase
Document data	Firebase
Offline sync	Firebase
Cost predictability	Supabase
Google integration	Firebase
Open source	Supabase
Maturity	Firebase
SQL power	Supabase

Our recommendation: For new projects with relational data, start with Supabase. For apps requiring offline-first or deep Google integration, choose Firebase.

Need help choosing the right backend? Contact us for a technical consultation.

Supabase vs Firebase in 2026: Complete Backend Comparison for Mobile Apps

Backend as a Service in 2026

Philosophy and Architecture

Firebase: The Google Way

Supabase: The Open-Source Alternative

Database Comparison

Data Modeling

Query Capabilities

Performance Characteristics

Authentication

Supported Providers

Authentication Code Comparison

Real-Time Features

Firebase Realtime Database

Supabase Realtime

Real-Time Comparison

Storage

File Storage Comparison

Storage Code Example

Functions and Backend Logic

Firebase Cloud Functions

Supabase Edge Functions

Functions Comparison

Pricing Comparison

Free Tier

Scaling Costs (Hypothetical App)

Developer Experience

CLI and Tooling

SDK Quality

When to Choose Firebase

When to Choose Supabase

Migration Considerations

Firebase to Supabase

Supabase to Firebase

Conclusion

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Frequently Asked Questions

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