Firebase
Depends
Confidence: Medium
Buy it if you're a small team shipping a mobile or web app fast and you set billing alerts on day one.
Comparison
Firebase and Supabase both land on Depends.
Buy it if you're a small team shipping a mobile or web app fast and you set billing alerts on day one.
Buy if you have developers who want a managed Postgres backend with serious compliance credentials (SOC 2, HIPAA, ISO 27001).
| Compare | Firebase | Supabase |
|---|---|---|
| Verdict | Depends | Depends |
| Best for | Mobile app MVPs | Developer teams wanting Postgres plus auth, APIs, and storage |
| Who it's not for | Apps needing complex relational queries and joins | Non-technical teams wanting a no-code database |
| Privacy | Google-backed and generally safe when configured correctly; SDK CVEs exist, and misconfigured rules have caused massive public leaks.⁸ | Strong on paper: SOC 2 Type 2, ISO 27001, HIPAA (with BAA), AES-256 at rest, TLS in transit, regular pen tests.11 |
| Support quality | No evidence in sources reviewed | No support evidence reviewed |
| Public sentiment | Users praise the quick setup and free auth but repeatedly warn about surprise bills and security-rule pitfalls.¹ | No independent user reviews were found in the sources reviewed. |
| Biggest gotcha | Blaze pay-as-you-go can spike hard; Reddit documents bills skyrocketing from one bad loop⁴ | Shared responsibility model: misconfigured RLS policies or leaked API keys are your problem, not theirs.11 |