Supabase Free Cloud Database: Setup Open-Source Firebase Alternative

Key Takeaways

• Always Free Tier: 2 complete PostgreSQL databases with 500 MB storage and automatic SSL (Never Expires).
• Built-in Authentication: 50,000 Monthly Active Users (MAU) with Email/Password, Magic Link, OAuth (Google, GitHub).
• Auto-Generated APIs: Instant REST and GraphQL endpoints generated automatically from your database schema.
• Realtime Subscriptions: Listen to database changes in real-time over WebSockets.
• No Credit Card Required: Instant signup via GitHub with no billing verification.

What is Supabase Cloud?

Supabase is an open-source Backend-as-a-Service (BaaS) built on top of enterprise-grade PostgreSQL. It provides developers with all the core features needed to build modern web and mobile applications: a real-time relational database, user authentication, row-level security (RLS), instant REST APIs, serverless edge functions, and object storage.

Unlike proprietary vendor lock-in platforms like Google Firebase, Supabase gives you full 100% control over a dedicated PostgreSQL instance. You can run raw SQL queries, install Postgres extensions (like pgvector for AI vector embeddings or PostGIS for location data), and export your data at any time.

Free Tier Breakdown: What You Get for $0

Supabase's Free Tier is designed to support indie developers, startups, and production side-projects with no credit card requirement:

Supabase Cloud dashboard for managing tables, authentication, and storage.

• 2 Managed Projects: Run two separate PostgreSQL databases concurrently.
• 500 MB Database Space: Plenty of capacity to store millions of text rows, JSON objects, and relational records.
• 50,000 Monthly Active Users: Full authentication engine supporting email, passwordless magic links, and social OAuth providers.
• 1 GB File Storage: Store images, avatars, and documents with public CDN URLs.
• 2 GB Bandwidth / Month: High-speed data transfer included.
• 500,000 Edge Function Invocations: Run TypeScript serverless backend logic on the edge.

Step-by-Step Guide: How to Claim Your Free Database

Follow these simple steps to spin up your dedicated PostgreSQL cloud instance:

Setting Up Tables and Generating API Keys

Once your database is created, you can access your API credentials from the dashboard project settings:

Supabase Project Settings API credentials management interface.

• Project URL: Found under Project Settings > API. Looks like https://xyzcompany.supabase.co.
• anon (public) key: Safe to use in browser frontend client code for public operations subject to Row Level Security.
• service_role (secret) key: Bypasses all security rules. Keep this strictly private on server environments.

Connecting to Supabase (JS & Python Examples)

Integrating Supabase with JavaScript, React, Next.js, or Python takes only a few lines of code:

Code editor showcasing Supabase SDK query syntax.

// Install: npm install @supabase/supabase-js

import { createClient } from '@supabase/supabase-js'



const supabaseUrl = 'https://your-project.supabase.co'

const supabaseKey = 'YOUR_ANON_KEY'

const supabase = createClient(supabaseUrl, supabaseKey)



// Insert data into 'users' table

const { data, error } = await supabase

 .from('users')

 .insert([{ name: 'ZipLoot', email: 'user@ziploot.com' }])



// Query data

const { data: users } = await supabase.from('users').select('*')

console.log(users)

# Install: pip install supabase

from supabase import create_client, Client



url: str = "https://your-project.supabase.co"

key: str = "YOUR_ANON_KEY"

supabase: Client = create_client(url, key)



response = supabase.table('users').select("*").execute()

print(response.data)

Supabase vs AWS RDS vs Firebase Comparison

Here is how Supabase's free cloud offering compares to traditional database platforms:

Frequently Asked Questions (FAQs)

Final Verdict

Supabase is hands-down the best free managed SQL database for modern web developers. Spin up your free PostgreSQL database today, implement user authentication effortlessly, and launch your applications at $0 cost.

Disclaimer: This article is strictly for educational purposes and does not constitute financial or technical advice. Always review cloud platform terms of service.