Who should read this
Summary: When choosing the DB layer for a SaaS, Supabase is a “backend platform,” Neon is “serverless Postgres,” and PlanetScale is “MySQL horizontal sharding.” These three products solve different problems, so rather than comparing them head-to-head, the real question is “what does our team actually need?”
This article is written for backend and full-stack developers picking a database for a new SaaS project. As of April 2026.
At a glance
| Supabase | Neon | PlanetScale | |
|---|---|---|---|
| DB engine | PostgreSQL | PostgreSQL | MySQL (Vitess) |
| Free tier | 500 MB + Auth + Storage | 0.5 GiB, scale-to-zero | None (removed in 2024) |
| Pro starting price | $25/project/mo | $19/mo | $39/mo |
| Built-in Auth | Yes (100K MAU) | No | No |
| Realtime | Yes (Broadcast + Presence) | No | No |
| DB branching | No | Yes (killer feature) | Yes |
| Scale-to-zero | No (always on) | Yes | No |
| Horizontal sharding | No | No | Yes (Vitess) |
Supabase — full-stack BaaS
Supabase is not “Postgres plus extras” — it is a backend platform. Auth (email, social, MFA), Storage (file uploads), Realtime (WebSocket broadcast), and Edge Functions (Deno-based serverless) all live in a single dashboard.
Strengths: The fastest way to ship a SaaS MVP. The Auth + Row Level Security combo lets the frontend call the database directly and securely, with no separate backend required.
Weaknesses: It lacks Postgres-native serverless features like scale-to-zero and branching. The fixed $25/mo per project means you pay even when there is no traffic. Vendor lock-in is a concern as well — deep reliance on Supabase APIs raises the cost of switching later.
Neon — serverless Postgres, purpose-built
Neon’s killer feature is database branching. It creates copy-on-write snapshots of your production database in seconds, perfect for CI/CD pipelines or preview deployments. Think of it like git branches, but for your database.
Strengths: Scale-to-zero (pay $0 when idle), branching, and an HTTP driver that lets you query from the edge without a connection pool. For teams that need pure Postgres and nothing else, Neon is the most modern choice.
Weaknesses: No Auth, Storage, or Realtime. If you need those, you will have to bolt on separate services (Clerk, S3, Pusher). An always-on instance costs $69/mo — more expensive than Supabase’s $25.
PlanetScale — MySQL horizontal sharding
PlanetScale runs on Vitess, the system YouTube built. Horizontal sharding and zero-downtime schema changes are the core value. Even tables with hundreds of millions of rows can handle ALTER TABLE without service interruption.
Strengths: Large-scale MySQL workloads. Schema branching (Deploy Requests) combined with zero-downtime migrations.
Weaknesses: No free tier ($39/mo starting price), MySQL only (no Postgres), and no foreign key support (a Vitess limitation). Price increases and the removal of the free tier in 2024—2025 triggered a wave of startup departures.
Decision flow
Pitfalls to avoid
Further reading
- AWS vs GCP vs Azure: 2026 Startup Cost Comparison — Cloud costs above the DB layer
- Vercel vs Netlify vs Cloudflare Pages: 2026 Cost and Performance Comparison — Hosting to pair with your database
- Monitoring Stack Guide: Datadog vs Grafana vs New Relic — The observability layer behind the database