How does Supabase compare to Firebase?

Supabase is built on PostgreSQL — a relational database — while Firebase's Firestore is a NoSQL document store. Supabase gives you full SQL, relational queries, joins and Row Level Security. Firebase has a larger mobile SDK ecosystem and simpler real-time setup for simple document-based data models. For applications with complex data relationships, Supabase is strongly preferred. See our Supabase vs Firebase comparison for a detailed breakdown.

Can I self-host Supabase?

Yes. Supabase is open source and can be self-hosted with Docker Compose. Self-hosting removes managed plan costs at scale and keeps data within your infrastructure — important for GDPR or CNDP compliance. The self-hosted setup requires more DevOps effort than the managed platform. We deploy self-hosted Supabase for clients with data residency requirements.

What are the scaling limits of Supabase?

Supabase managed platform scales well for most SaaS applications. The Pro plan handles typical SaaS workloads. For very high database connection counts, PgBouncer connection pooling is available. At extreme scale (millions of users, high write throughput), migrating to a dedicated PostgreSQL cluster on RDS or similar becomes cost-effective. Because Supabase is PostgreSQL, this migration is straightforward — your SQL queries and schema migrate without changes.

How does Row Level Security work for multi-tenant apps?

Row Level Security (RLS) is a PostgreSQL feature that attaches access policies directly to database tables. In Supabase, you define policies like "users can only SELECT rows where user_id = auth.uid()". The database enforces this on every query — even if your application code has a bug that passes the wrong user ID. For multi-tenant SaaS applications, RLS eliminates an entire class of data leakage vulnerabilities at the infrastructure layer.

Backend

Supabase

Open-source Firebase alternative built on PostgreSQL.

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Supabase is an open-source backend-as-a-service that wraps PostgreSQL with authentication, real-time subscriptions, file storage, Edge Functions and an auto-generated REST and GraphQL API. Because the database layer is PostgreSQL, Row Level Security policies handle multi-tenant data isolation cleanly. Self-hostable or managed on supabase.com.

Why we chose it

Why Ascii-Core uses Supabase

1
PostgreSQL underneath — full SQL power, relational models, pgvector, migrations — with a managed layer on top
2
Row Level Security enables multi-tenant data isolation at the database layer without application-level filtering
3
Auth, storage and real-time shipped together — reduces the number of third-party services to manage
4
Open source under Apache 2.0 — self-hostable with no vendor lock-in

Ideal use cases

When to use Supabase

SaaS MVPs requiring auth, database and storage with minimal backend code
Multi-tenant applications where RLS handles data isolation cleanly
Real-time applications (collaborative editing, live dashboards, notifications)
React Native and Flutter mobile apps needing a managed backend
Projects where self-hosting is a future requirement

Trade-offs

Honest limitations

We believe in accurate trade-offs. These are the cases where a different tool may be the better choice.

Edge Functions are limited compared to full Node.js/Lambda environments for complex server logic
Supabase Auth has fewer social provider options than Auth0 or Clerk
Very large-scale managed plans become expensive — at scale, raw PostgreSQL on RDS may be cheaper

Services

Services using Supabase

Ascii-Core service offerings where this technology plays a central role.

SaaS Development

Production-ready SaaS with auth, billing and analytics.

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Web Development

Fast, scalable web platforms and dashboards.

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Mobile Development

Native-quality apps for iOS and Android.

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MVP Development

Validate your idea with a real product, fast.

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Solutions

Business solutions using Supabase

Outcome-focused solution packages that rely on this technology.

Build a SaaS Product

We architect, build and launch SaaS products — multi-tenant, subscription-ready and designed to scale from your first customer to your first thousand.

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Launch Your MVP Faster

Scope, build and ship your minimum viable product with a team that has done it 20+ times — without the risk of over-engineering or under-delivering.

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Comparisons

Supabase comparisons

How this technology stacks up against common alternatives.

Supabase vs Firebase: Which Backend Should You Choose?

Related technologies

Other tools commonly used alongside this technology in Ascii-Core projects.

PostgreSQLDatabase Next.jsWeb React NativeMobile FlutterMobile

FAQ

Supabase questions

Ready to build with Supabase?

We use Supabase in production across client projects in Morocco, Europe and the GCC. Book a discovery call to scope your project.