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Free SaaS MVP Stack

A small web app with sign-in, a Postgres database, file uploads, transactional email and error tracking. Every layer below is a tracked free tier, with its published limits and the date we last checked them. The tightest limit in the stack is usually the one you hit first.

Hosting: Vercel

Catch: Hobby plan; team collaboration needs Pro ($20/mo).

Checked 13 Nov 2026 · vendor page · alternatives

Database: Neon

Catch: Compute scales to zero after 5 minutes idle (can't be disabled); running out of CU-hours or egress suspends compute until the next period, and going over 1 GB storage blocks writes.

Checked 13 Nov 2026 · vendor page · other databases free tiers

Auth: Clerk

Catch: Hobby: up to 3 social connections, no MFA or passkeys; one-month grace period if you go above 50K MRU.

Checked 13 Nov 2026 · vendor page · alternatives

File Storage: Cloudflare R2

Catch: Free tier only applies to Standard storage.

Checked 10 Nov 2026 · vendor page · other storage & media free tiers

Email: Resend

Catch: 100/day cap bites before the monthly limit.

Checked 13 Nov 2026 · vendor page · alternatives

Errors: Sentry

Checked 4 Nov 2026 · vendor page · alternatives

This is one example combination, not a recommendation or sponsorship. Swap any layer for an alternative in the same category; confirm limits at each vendor before you build.