Skip to content
aicoolies logo

Supabase vs Appwrite vs Firebase — Backend-as-a-Service Comparison

Choosing a Backend-as-a-Service platform is one of the most consequential architecture decisions for any application. Supabase offers PostgreSQL power with open-source flexibility, Firebase provides Google's battle-tested mobile ecosystem, and Appwrite delivers self-hosted-first vendor independence. This comparison evaluates database capabilities, pricing, vendor lock-in, and developer experience to help you make the right choice.

analyzed by Raşit Akyol March 29, 2026

ShareShare on XShare on LinkedInShare on Reddit
SupabasewinnerAppwriteFirebase

Supabase reviewAppwrite reviewFirebase review

Verdict

Supabase is the industry-leading open-source Backend-as-a-Service, anchoring developer workflows in full-featured PostgreSQL, automated REST/GraphQL APIs, Row-Level Security, and pgvector. While Firebase offers legacy document storage and real-time synchronization, and Appwrite provides a clean self-hosted Docker microservice setup, Supabase avoids proprietary data silos by providing standard SQL portability, powerful edge functions, and an expansive developer community. Our pick: Supabase.

Quick Comparison

Supabasewinner

Pricing
Supabase offers a perpetual Free tier for hobbyists and experimentation (50k MAUs, 500MB DB). The Pro tier starts at $25/month including $10 compute credits, 8GB database storage, and 250GB egress. The Team tier costs $599/month for SOC2/HIPAA compliance and priority support, alongside custom Enterprise packages.
Pricing Model
Freemium
Platforms
Web, CLI, Self-hosted
Open Source
Yes
Telemetry
Clean
Status
Active
Editorial Pick
—
Last Verified
Aug 26, 2026
Description
Open-source Firebase alternative providing a full backend-as-a-service on PostgreSQL. Auto-generated REST and GraphQL APIs from your schema, real-time subscriptions, built-in auth with 20+ social providers and Row Level Security, S3-compatible file storage with CDN, and Deno-powered Edge Functions. Visual dashboard with SQL editor and table editor. Supports pgvector for AI apps. Self-hostable or managed with a generous free tier. 75K+ GitHub stars.

Appwrite

Pricing
Open-source Backend-as-a-Service (BaaS) platform under BSD-3-Clause license with 45k+ GitHub stars and $0 software licensing for self-hosted Docker environments. Appwrite Cloud offers a Free tier ($0/mo with 75K monthly requests, 2GB storage, and 1 database), Pro tier ($15/member/mo or $25/mo base with 5M requests, 150GB storage, 3.5M function executions, 200K MAU, and granular overages), Scale tier ($599/mo with 50M requests, 1TB storage, priority support), and custom Enterprise plans with dedicated infrastructure, custom SLAs, SOC 2/HIPAA compliance, and 24/7 support.
Pricing Model
Freemium
Platforms
Self-hosted, Docker, Cloud, 15+ SDKs
Open Source
Yes
Telemetry
Clean
Status
Active
Editorial Pick
—
Last Verified
Sep 6, 2026
Description
Appwrite is an open-source BaaS platform with 56K+ GitHub stars providing authentication, databases, storage, functions, messaging, and real-time APIs out of the box. Self-hostable alternative to Firebase with 15+ client and server SDKs. Features OAuth login with 30+ providers, document-based database with queries, file storage with image transforms, serverless functions, and push notifications. Docker-based deployment with a web console for management.

Firebase

Pricing
Firebase offers a free Spark plan with fixed daily and monthly resource caps for prototyping. The Blaze plan operates on a pay-as-you-go model that retains Spark's free allowances and bills excess usage per resource consumed.
Pricing Model
Freemium
Platforms
Cloud-based; SDKs for iOS, Android, Web, Flutter, Unity, C++; Firebase Console and CLI
Open Source
No
Telemetry
Concerns
Status
Active
Editorial Pick
—
Last Verified
Aug 26, 2026
Description
Firebase is Google’s app development platform providing backend services including Firestore, Realtime Database, Authentication, Cloud Storage, Cloud Functions, Hosting, Analytics, messaging, and AI-connected app features. Current docs foreground Firebase AI Logic for Gemini API access, Genkit for full-stack AI and agentic apps, Firestore vector search, and SQL Connect. Spark plan is free; Blaze is pay-as-you-go.

What Sets Them Apart

The core distinction between these three Backend-as-a-Service platforms lies in their underlying data storage philosophy and architecture. Supabase is built directly on genuine PostgreSQL, offering complete relational capabilities, ACID compliance, complex SQL joins, triggers, foreign keys, and vector search with pgvector. Appwrite takes a containerized microservice approach with an abstraction layer over MariaDB/MongoDB, providing clean document-based REST and GraphQL APIs. Firebase, Google's proprietary managed cloud BaaS, relies on Cloud Firestore and the Realtime Database—document-oriented NoSQL databases optimized for rapid client synchronization but constrained by rigid querying rules and lack of relational joins.

Firebase binds applications tightly to proprietary GCP infrastructure with metered read/write billing. Supabase and Appwrite provide fully functional open-source self-hosting via Docker Compose. Supabase exposes standard Postgres connection strings for Prisma, Drizzle, and direct SQL tools.

Supabase, Appwrite, and Firebase at a Glance

Supabase delegates security directly to PostgreSQL Row Level Security (RLS) policies written in standard SQL.

Appwrite provides an intuitive role- and team-based permission model across collections and functions.

Firebase uses proprietary Firebase Security Rules on document paths, often requiring data denormalization.

Technical Architecture and AI Readiness

Supabase integrates PostgreSQL, PostgREST, GoTrue auth, Kong API gateway, Deno Edge Functions, and native pgvector AI embeddings.

Appwrite orchestrates Swoole/PHP workers, Redis queues, and Docker-orchestrated runtimes across multiple languages.

Firebase operates on Google Cloud infrastructure (GCP Cloud Run, Firestore on Spanner, and Google Identity Platform).

Developer Experience and Workflows

Supabase sets the standard with its CLI for local Docker instances, deterministic SQL migrations, and automatic TypeScript types.

Firebase provides mature cross-platform mobile SDKs with offline caching and analytics.

Appwrite offers comprehensive SDKs spanning mobile, Flutter, and web frameworks with an intuitive web console.

The Bottom Line

Supabase is the overall winner among modern BaaS platforms, eliminating vendor lock-in with standard PostgreSQL, pgvector AI support, and database-level security.

Firebase is best for Google-centric mobile apps, and Appwrite is ideal for containerized document-based backends.

FAQ

How do database engines and data modeling compare among Supabase, Appwrite, and Firebase?

Supabase provides an unmodified PostgreSQL relational database with joins, triggers, stored procedures, and pgvector. Firebase uses Cloud Firestore, a proprietary NoSQL document database optimized for horizontal scale and real-time synchronization without native joins. Appwrite provides a document abstraction layer running on MariaDB/PostgreSQL.

What are the architectural differences in real-time subscriptions and connection scaling?

Firebase uses a proprietary WebSocket synchronization protocol listening to Firestore snapshot changes with offline-first caching. Supabase listens to PostgreSQL's WAL via its Realtime Elixir server broadcasting row-level changes over WebSockets. Appwrite uses an asynchronous WebSocket microservice powered by Redis pub/sub.

How do security and authorization models differ between PostgreSQL RLS and Firebase rules?

Supabase delegates authorization to PostgreSQL Row Level Security (RLS) policies enforced at the database kernel level using SQL predicates. Firebase relies on Firebase Security Rules evaluated in Google's cloud layer before requests hit Firestore. Appwrite provides granular document-level permissions evaluated in its API gateway.

What are the key trade-offs regarding vendor lock-in, self-hosting, and total cost of ownership?

Supabase and Appwrite are open-source and self-hostable using Docker, eliminating vendor lock-in with standard pg_dump exportability. Firebase is deeply coupled to GCP where high read/write volume incurs per-document billing, whereas Supabase and Appwrite charge based on compute resources.

Sources & verification

Sources checked
Content verified

Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.