Every small application needs a database, and every small application starts with the same question: run it yourself or use a managed service? Self-hosting on a VPS is cheap and fully controlled, but you become the database administrator — backups, patches, replication, and the three-in-the-morning page when it stops. Managed database services take that job off your hands, and their free tiers are generous enough that most side projects and early startups never pay a cent. The catch is that free tiers differ sharply in limits, and picking the wrong one means a painful migration later.

The Postgres Options: Supabase and Neon

Supabase is the most complete free Postgres offering: a hosted database plus authentication, storage, and realtime features, built around the idea of a backend in a box. Its free tier includes a reasonable amount of database storage and bandwidth, and it suits projects that want Postgres plus auth without assembling the pieces themselves. The trade-off is that the free tier is designed to get you started, not to run a production application forever — projects that go inactive can be paused, and scaling beyond the free tier means moving to a paid plan.

Neon takes a different approach: serverless Postgres that separates storage from compute and scales to zero when idle. That makes it genuinely cheap for small projects with bursty traffic — you pay for what you use, and an idle database costs almost nothing. Its free tier includes a modest amount of storage and a generous allowance of compute hours, and its branching feature, which lets you copy a database for testing the way you branch code, is the standout. The trade-off is cold starts: a database that scaled to zero takes a moment to wake up, which can add latency to the first request after idle time.

MySQL and the Alternatives

PlanetScale built its reputation on MySQL with a branching workflow similar to Neon's, and it remains a strong choice for teams that prefer MySQL or need its particular strengths. Its free tier has changed over time, so check the current limits rather than trusting an older guide — the pattern across this whole market is that free tiers shrink as services mature. Railway and Render also offer managed Postgres as part of a broader hosting platform, which suits projects that want the database and the application in one place with one bill.

Beyond relational databases, the free-tier landscape is thinner. Managed MongoDB Atlas offers a free shared cluster that suits learning and small projects, and several key-value and cache services offer small free tiers. The pattern to watch for is the same everywhere: a free tier that covers storage but meters something else — connections, bandwidth, or operations — and the metered thing is what eventually forces an upgrade. Read the limits on connections especially, because serverless applications that open a new connection per request can exhaust a small pool surprisingly fast.

How to Choose Without Regretting It

Start with the database your application actually needs, not the one with the biggest free tier. If your stack is Postgres-shaped, choose between Supabase and Neon on the features: Supabase if you want auth and storage bundled, Neon if you want serverless scaling and branching. If you need MySQL, PlanetScale is the natural fit. Then check three limits before committing: storage, connections, and what happens when the project goes idle — some services pause inactive projects, and restoring one should be a click, not a support ticket.

Keep your exit open from day one. Use standard SQL and avoid proprietary extensions where you can, keep regular logical backups in your own storage, and test restoring one. A managed database is a convenience, not a marriage, and the projects that migrate painlessly are the ones that kept their data portable. Free tiers are a gift for small projects; treat them as a runway, not a permanent home, and the day you outgrow one will be a good day, not a crisis.

Frequently Asked Questions

Q: Is a free managed database safe for production?

A: For a small project with modest traffic, yes — but keep your own backups and watch the usage limits. Free tiers can pause or throttle when limits are hit.

Q: Supabase or Neon — which free tier is better?

A: Supabase if you want auth, storage and realtime bundled with Postgres. Neon if you want serverless scaling to zero and database branching. Both are strong.

Q: What is the biggest hidden limit in free database tiers?

A: Usually connections or idle pausing. Serverless apps can exhaust a small connection pool quickly, and some services pause inactive projects until you wake them.