Comparing Supabase and Firebase for modern web apps. Discover why PostgreSQL, Row Level Security, and zero vendor lock-in make Supabase the top choice.
Five years ago, Firebase was the automatic choice for developers building rapid MVPs. However, as applications grow past 1,000 active users, Firebase's NoSQL document model reveals severe limitations: duplicate data structures, painful migrations, lack of aggregations (like calculating sum of orders), and sudden billing surprises from runaway read counts.
When developing [Aura Estate](/projects/15), a full-stack real estate platform with multi-tier agent permissions, dynamic property listings, and lead tracking, PostgreSQL backed by Supabase was the only architecture capable of handling complex relational queries with sub-10ms response times.
| Feature | Supabase | Google Firebase |
|---|---|---|
| Underlying Database | Open Source PostgreSQL (Relational) | Proprietary Firestore / Realtime DB (NoSQL) |
| Complex Queries & Joins | Native SQL JOINs, CTEs, Aggregates | Not supported (Requires client-side looping) |
| Security Model | Postgres Row Level Security (RLS) | Firebase Security Rules (Custom syntax) |
| Vector & AI Search | Built-in pgvector for AI embeddings | Requires external Pinecone / Weaviate setup |
| Vendor Lock-in | Zero (Export SQL anytime or self-host) | High (Tied exclusively to Google Cloud) |
| Pricing Model | Predictable compute-based tiers | Pay-per-document read/write (Volatile) |
With Supabase, security is enforced directly at the database engine level rather than relying on error-prone application middleware. Even if client-side code is compromised, users can never read or write records they do not own.
-- Enable RLS on properties table
ALTER TABLE properties ENABLE ROW LEVEL SECURITY;
-- Allow public read access to active listings
CREATE POLICY "Public properties are viewable by everyone"
ON properties FOR SELECT
USING (status = 'active');
-- Only allow registered agents to update their own listings
CREATE POLICY "Agents can only update their own listings"
ON properties FOR UPDATE
TO authenticated
USING (auth.uid() = agent_id);Whether you need a custom e-commerce storefront, an internal business dashboard, or a scalable SaaS backend with Supabase and React, I provide full-cycle engineering from database architecture to smooth 60fps frontend implementation. [Explore my services](/services) or [start a conversation today](/contact).
Yes, absolutely. Enterprise companies and high-growth startups like Mobbin, PwC, and Mozilla run production workloads on Supabase. It offers enterprise-grade PostgreSQL with automatic daily backups, point-in-time recovery, and edge functions.
Yes. Firebase data can be exported as JSON or CSV and mapped directly into relational PostgreSQL tables. Supabase also provides dedicated migration utilities and auth bridging tools to transfer user accounts smoothly without downtime.
Supabase gives clients full ownership of their data in a standard SQL database that can be hosted on any cloud provider (AWS, GCP, self-hosted Docker), while cutting backend engineering costs by 60% through instant REST/GraphQL APIs and built-in auth.