Recommendation
Supabase is worth shortlisting if PostgreSQL is central to the application. Firebase may fit teams already aligned with Google's app development ecosystem and services.
Assess
- Data model: SQL/relational vs chosen Firebase database approach
- Authentication and permissions
- Offline/mobile behavior required by your app
- Data transfer, storage and runtime limits
- Export and migration strategy
Never assume a free tier will fit your future growth. Verify current vendor billing and quotas.
Structured comparison
| Criterion | Supabase ↗ | Firebase ↗ |
|---|---|---|
| Purpose | Managed application backend built around PostgreSQL. | Google application development platform. |
| Pricing model | freemium | freemium |
| Deployment | Managed / self-hostable components | Managed platform |
| Best for | Teams that want to assemble backend components quickly using PostgreSQL. | Mobile and web applications aligned with Google's developer ecosystem. |
| Limitations | Projects that cannot use managed services or need complete infrastructure isolation. | Teams seeking a primarily SQL-centered application architecture. |
Editorial note
Examples are starting points, not production security audits. Confirm dependencies, versions and pricing using linked vendor documentation.