This comparison was auto-drafted from tool data and is being progressively edited. Last reviewed 2026-07-16.
Supabase vs PlanetScale: The Side-by-Side Breakdown
Supabase and PlanetScale both took the misery out of running a production database, and both borrowed git's branching model to make schema changes less scary. The core split is the engine and the scope. Supabase is Postgres wrapped in a full backend, with auth, storage, real-time, and edge functions, while PlanetScale is pure serverless MySQL built on Vitess, the sharding tech behind YouTube, for horizontal scale and zero-downtime migrations. So this is really Postgres-plus-backend versus MySQL-built-to-scale. Here is where each pulls ahead.
Supabase
View detailsThe open-source Firebase alternative built on a real, full-power Postgres you actually own. Auth, storage, real-time, and edge functions ship alongside the database as one product.
Key Features
- Full Postgres database
- Built-in authentication
- Real-time subscriptions
- Edge Functions (TypeScript)
- File storage with transformations
- Auto-generated APIs
Pros
- + Full Postgres power, not just NoSQL
- + Open source and self-hostable
- + Excellent developer experience
- + Real-time built in
- + Generous free tier
Cons
- - Younger than Firebase, fewer tutorials
- - Some features still maturing
- - Postgres can be complex for beginners
- - Edge Function cold starts
PlanetScale
View detailsServerless MySQL built on Vitess, the sharding layer behind YouTube, with git-style branching and deploy requests. The developer experience feels closer to git than to phpMyAdmin.
Key Features
- Database branching for safe schema changes
- Non-blocking schema migrations with zero downtime
- Built on Vitess for horizontal scaling
- Automatic read replicas and connection pooling
- Insights dashboard for query performance
- Integration with popular frameworks and ORMs
Pros
- + Database branching is a game changer for teams
- + Zero-downtime schema migrations
- + Scales automatically without manual sharding
- + Great developer experience with CLI and dashboard
- + Built on battle-tested Vitess technology
Cons
- - MySQL only, no PostgreSQL support
- - Free tier was removed, now starts at paid plans
- - Foreign key constraints have limitations
- - Vendor lock-in due to Vitess-specific behavior
The Verdict
Pick Supabase if you want Postgres and a batteries-included backend, since you get auth, storage, real-time, and edge functions on top of the database, and the whole stack is open source and self-hostable. Pick PlanetScale if you are on MySQL and expect serious scale, because Vitess gives you automatic horizontal scaling and genuinely non-blocking, zero-downtime schema migrations that few managed databases match. The deciding constraints are concrete. PlanetScale is MySQL only with no Postgres support and removed its free tier, so it now starts at a paid plan, while Supabase keeps a generous free tier and full Postgres power. PlanetScale also carries foreign-key limitations and Vitess-specific lock-in, whereas Supabase's rough edges are maturing features and a learning curve for Postgres newcomers. If you can only run one, choose by engine and scale profile: Supabase for a Postgres-based full backend on a budget, PlanetScale for a MySQL app that has to scale without downtime.
Choose Supabase if:
Teams that want a full open-source backend on Postgres, with database plus auth, storage, and real-time, and a generous free tier.
Choose PlanetScale if:
Teams scaling a MySQL app that need automatic horizontal scaling and zero-downtime schema migrations.