Supabase for Builders
Supabase is an open-source Firebase alternative built on PostgreSQL. It gives you a database, authentication, file storage, edge functions, and realtime subscriptions — all accessible via a clean JavaScript SDK. This course teaches Supabase through building a real product: from creating a project to deploying auth, data, and file uploads.
What you'll learn
Course outline
Free — no account needed
What Is Supabase?
A whole backend as a managed service — and why that changes what solo builders can ship
Setting Up Your Supabase Project
Creating a project, exploring the dashboard, and connecting your app
Database Queries with the Supabase Client
Creating tables and querying them with the JavaScript SDK — no SQL required (but you can)
Full course — $59 one-time
Authentication
Email/password, magic link, and Google OAuth — wired up in under an hour
Row Level Security
The feature that makes Supabase safe to query directly from the browser
File Storage
Profile photos, attachments, and assets — uploading and serving files with Supabase Storage
Realtime Subscriptions
Subscribe to database changes — build live dashboards, notifications, and chat
Edge Functions
Serverless TypeScript functions for webhooks, Stripe, and logic that should not run in the browser
Production Checklist
Everything to check before going live — security, performance, and backup
Get the full course
9 lessons — from creating your first project to a production-ready app with auth, RLS, storage, and Edge Functions.
Written by the RadarTrek editorial team · Reviewed June 2026
About this course
Supabase is an open-source Firebase alternative that gives you a PostgreSQL database, authentication, real-time subscriptions, file storage, and Edge Functions — all behind a clean API and excellent developer experience. Learning Supabase means you can add a full back-end to any web application without managing servers or writing boilerplate authentication code. This Supabase tutorial shows you how to integrate Supabase with Next.js, manage your database schema, and implement Row-Level Security for production-grade data access control.
Supabase has become the back-end of choice for indie developers, startups, and small teams who want to move fast without sacrificing PostgreSQL's power. It pairs exceptionally well with Next.js and Vercel, giving you a complete production stack without operational overhead. After this course you will be able to build full-stack applications with authentication, a relational database, and real-time features — all deployed and running in production.
Frequently asked questions
What is the difference between Supabase and Firebase?
Both provide back-end-as-a-service with authentication, database, and storage, but they differ fundamentally in their database layer. Firebase uses Firestore, a NoSQL document database. Supabase uses PostgreSQL, a powerful relational database. PostgreSQL's relational model, complex query support, and SQL interface make Supabase the better choice for structured data. Supabase is also open-source and can be self-hosted, while Firebase is Google-proprietary.
Do I need SQL knowledge to use Supabase?
Basic SQL knowledge is helpful but not strictly required to get started — Supabase's dashboard provides a table editor and the auto-generated API means you can fetch data without writing SQL. However, understanding SQL makes Supabase dramatically more powerful. You can write complex queries, use database functions, and take full advantage of PostgreSQL's capabilities. The SQL for Builders course pairs well with this one.
Is Supabase free to use?
Supabase offers a generous free tier: 2 projects, 500MB database storage, 1GB file storage, 50,000 monthly active users for auth, and 2 million API requests per month. This is more than enough to build and launch a real product. Paid plans start at $25/month per project and are needed when you require more storage, users, or compute power. The free tier is suitable for side projects, MVPs, and early-stage products.
What is Row-Level Security (RLS) and do I need it?
Row-Level Security is a PostgreSQL feature that lets you define access policies at the database level — for example, "users can only read their own data." Supabase enables RLS on all tables by default. If you are building any application where users should only see their own data (which is most applications), RLS is essential. This course covers RLS policies in depth because misconfiguring them is a common source of data security bugs.
Can I use Supabase with frameworks other than Next.js?
Yes — Supabase provides client libraries for JavaScript, Python, Dart, Swift, Kotlin, and C#. The JavaScript client works with any framework: React, Vue, Svelte, SvelteKit, Nuxt, Remix, or plain HTML/JS. There is also a REST API and GraphQL endpoint. This course uses Next.js because it is the most popular pairing, but the Supabase concepts apply directly to any other framework.