Convex vs Supabase

Convex vs Supabase comparison for backend platforms. Compare reactive backend vs Postgres BaaS for your app.

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Verdict Rapide

Gagnant: Ça dépend

Convex offers a unique reactive, TypeScript-first backend. Supabase provides open-source Postgres with more traditional architecture. Choose Convex for real-time apps; choose Supabase for Postgres and flexibility.

Choisissez Convex si...

✓ You want real-time out of the box
✓ TypeScript end-to-end is important
✓ You like functions-as-backend approach
✓ You want automatic reactivity
✓ You prefer less infrastructure thinking

Choisissez Supabase si...

✓ You want standard Postgres
✓ Open-source and self-hosting matter
✓ You need Row Level Security
✓ You want SQL access
✓ You prefer more control over infrastructure

Comparaison Fonctionnalité par Fonctionnalité

Catégorie	Convex	Supabase	Gagnant
Pricing	Free tier available. Pro: From $25/mo.	Free: 500MB. Pro: $25/mo. Self-host: Free forever.	Supabase
Free Tier	Limited free tier for development.	500MB database, unlimited API requests, auth included.	Supabase
Developer Experience	Excellent. Full TypeScript, reactive queries, automatic sync.	Good. REST and client libs. SQL knowledge helpful.	Convex
Documentation	Good docs. TypeScript-focused. Growing community.	Excellent docs. Framework guides. Large community.	Égalité
Scalability	Managed scaling. Built for reactive workloads.	Scales well. Postgres proven at scale.	Égalité
Features	Reactive database, functions, file storage, scheduling.	Postgres, auth, storage, edge functions, real-time, vector.	Égalité

Comparaison de Code

Reactive Query

typescript

import { useQuery, useMutation } from 'convex/react';
import { api } from '../convex/_generated/api';

function MessageList() {
  // Automatically updates when data changes!
  const messages = useQuery(api.messages.list);
  const sendMessage = useMutation(api.messages.send);
  
  return <div>{messages?.map(m => <Message key={m._id} {...m} />)}</div>;
}

Convex queries are automatically reactive.

Query with Client

typescript

import { createClient } from '@supabase/supabase-js';

const supabase = createClient(url, anonKey);

const { data: messages } = await supabase
  .from('messages')
  .select('*, author:users(name)')
  .order('created_at', { ascending: false });

// Real-time requires separate subscription

Supabase offers SQL-like client queries.

🔄 Notes de Migration

These are fundamentally different architectures. Convex uses a custom reactive database; Supabase is Postgres. Migration requires rethinking data access patterns.

Questions Fréquemment Posées

Is Convex a database? ▼

Convex is a backend platform with a built-in reactive database. It's more like 'backend-as-a-service' than just a database. You write TypeScript functions that run on their servers.

Can I self-host Convex? ▼

No, Convex is cloud-only. If self-hosting is important, Supabase is the better choice.

Essayer Convex

The reactive backend

Essayer Supabase

Open source Firebase alternative

⚖ Comparer dans l'Outil Interactif

Dernière mise à jour: January 11, 2026