Supabase vs Firebase

BaaS.

Overview

Supabase and Firebase are two leading BaaS platforms with very different philosophies. Supabase is Postgres-first (real PostgreSQL with row-level security, open-source self-host option, SQL-native); Firebase is Google-ecosystem (Firestore NoSQL, tight Auth and Cloud Functions integration, Google Cloud lock-in). The right answer depends on whether the team prefers SQL-native plus open-source or Google-stack plus NoSQL.

• Supabase: Postgres-based. Real PostgreSQL with RLS, open-source self-host option, SQL-native query layer. Default for SQL-comfortable teams that want portability.
• Firebase: Google ecosystem. Firestore NoSQL, tight Auth, Cloud Functions, GCP integration. Default for mobile teams already on Google's stack.
• Operational fit per team. SQL expertise biases toward Supabase; mobile/Google-stack expertise biases toward Firebase. Both have generous free tiers.
• Per-app choice. Different apps may pick differently. Document the rationale per app rather than enforcing one BaaS org-wide.

The approach

Workload-driven choice, per-team operational fit considered, documented rationale per app. The discipline is making the BaaS choice once with a written reason rather than mixing both platforms across apps that share auth or data.

• Workload-driven. BaaS per app. Reality drives the answer.
• Supabase for Postgres-comfortable teams. SQL-native, RLS, open-source self-host fallback. Default when portability matters.
• Firebase for Google-stack mobile apps. Tight Auth, Firestore, Cloud Functions integration. Default for mobile-first products on GCP.
• Operational fit plus documented rationale. Team workflow considered; per-app rationale captured. Future migrations have a paper trail.

Why this compounds

The right BaaS compounds across years. Auth, data, and serverless function patterns align with the platform; cross-app tooling gets built once and reused. By year two the BaaS choice is automatic per app.

• Better operational fit. Platform matches team. Velocity stays high.
• Workload-driven decisions. Replaces tribal preference with documented rationale. Quality of choice improves.
• Better engineering velocity. Right platform means features compose cleanly. Iteration speed increases.
• Year-one investment, year-two habit. First BaaS choice is the investment; subsequent apps inherit the patterns.