Supabase vs AWS Amplify — Backend-as-a-Service Brawl: Open Source vs Corporate Cloud
Supabase gives you a full Postgres backend for free, while Amplify locks you into AWS's ecosystem with higher costs and complexity.
The short answer
Supabase over Aws Amplify for most cases. Supabase offers a real-time Postgres database with row-level security for $0 in development, while Amplify charges for basic features like GraphQL APIs.
- Pick Supabase if building a new project and want a free, open-source backend with a real database. Ideal for startups, indie devs, or anyone avoiding vendor lock-in
- Pick Aws Amplify if your organization is all-in on AWS and you need tight integration with Lambda, S3, or other AWS services for enterprise compliance
- Also consider: Firebase if you prefer a NoSQL database and don't mind Google's ecosystem—it's simpler than Amplify but with similar lock-in.
— Nice Pick, opinionated tool recommendations
Framing: Open-Source Freedom vs AWS's Walled Garden
These tools are both backend-as-a-service platforms, but they come from opposite philosophies. Supabase is an open-source alternative to Firebase, built on Postgres, giving you the database you'd run yourself but managed. AWS Amplify is AWS's attempt to simplify their own services—tying together Cognito, AppSync, DynamoDB, and more into a single CLI. It's less a standalone tool and more a wrapper for AWS's existing products, which means you're buying into their entire ecosystem whether you like it or not. If you want to avoid cloud lock-in, Supabase is the obvious choice; if you're already deep in AWS and need their specific integrations, Amplify might make sense—but even then, it's a compromise.
Where Supabase Wins: Real Database Power for Free
Supabase's killer feature is its Postgres database with real-time subscriptions included in the free tier. You get a full SQL database with row-level security, foreign keys, and stored procedures—no artificial limits on queries or connections. Compare that to Amplify: its free tier only includes 1,000 monthly active users for Auth and 5 GB of storage, with GraphQL APIs costing $4 per million operations after the first 250,000. Supabase also offers built-in authentication that's just as capable as Amplify's Cognito but without the AWS complexity. For startups or indie devs, Supabase's pricing is transparent: $25/month for the Pro plan with 8 GB RAM and 250 GB storage, while Amplify's costs can balloon quickly with usage-based pricing across multiple services.
Where Amplify Holds Its Own: Deep AWS Integration
If you're already using AWS for other services, Amplify has some real strengths. Its tight integration with AWS Lambda, S3, and CloudFront means you can deploy full-stack apps with serverless functions and CDN caching in a few commands. Amplify's CLI and UI components are polished for React and React Native, offering pre-built auth flows and data binding that can speed up development. For enterprises that need compliance and security features like HIPAA or SOC 2, AWS's certifications might be a deciding factor—Supabase is catching up but isn't there yet. Also, Amplify's GraphQL API with AppSync provides real-time capabilities and offline support out of the box, which is handy for mobile apps, though it comes at a cost.
The Gotcha: Switching Costs and Hidden Friction
The biggest surprise with Amplify is how quickly you hit paywalls for basic features. Want to use GraphQL subscriptions? That's $4 per million operations after the free tier. Need more than 5 GB of storage? That's S3 pricing, which adds up. With Supabase, the free tier includes 500 MB of database space and 1 GB of file storage—enough for most small projects. Another gotcha: Amplify's vendor lock-in. Once you build with Amplify, migrating away means rewriting your auth, database, and API layers. Supabase, being open-source, lets you self-host or export your Postgres database easily. Also, Amplify's CLI can be brittle—updates sometimes break existing projects, while Supabase's Docker-based setup is more stable.
If You're Starting Today: Go with Supabase Unless You're AWS-Only
For a new project, choose Supabase unless you're committed to AWS for other reasons. Start with the free tier: you get a Postgres database, authentication, and real-time features without any cost. If you need more, upgrade to the $25/month Pro plan for better performance and support. With Amplify, you'll spend more time configuring IAM roles and worrying about costs. A concrete scenario: build a SaaS app with user accounts and real-time notifications. Supabase gives you the database and auth for free, while Amplify would charge for GraphQL operations and storage from day one. Only pick Amplify if your company mandates AWS or you need specific integrations like Lambda functions for complex business logic.
What Most Comparisons Get Wrong: It's Not Just About Features
Most reviews focus on feature lists, but the real question is control vs convenience. Supabase offers more control with an open-source stack you can self-host, while Amplify offers convenience at the cost of lock-in. People also overstate Amplify's ease of use—its CLI is powerful but complex, requiring knowledge of AWS services. Supabase's simplicity is genuine: you get a Postgres database you already know how to use. Another miss: pricing transparency. Supabase's plans are flat-rate with clear limits, while Amplify's costs are scattered across multiple AWS services, making budgeting a nightmare. Don't be fooled by Amplify's 'free tier'—it's a gateway to AWS's expensive ecosystem.
Quick Comparison
| Factor | Supabase | Aws Amplify |
|---|---|---|
| Database | Postgres with real-time, row-level security, free tier includes 500 MB | DynamoDB or Aurora via AppSync, no free database, costs based on usage |
| Authentication | Built-in auth with social logins, free tier includes unlimited users | Cognito integration, free tier limited to 1,000 monthly active users |
| Pricing Model | Flat-rate plans: $0/month (Free), $25/month (Pro), $599/month (Enterprise) | Usage-based across AWS services, e.g., $4 per million GraphQL operations |
| Real-time Features | Included in all plans via Postgres listen/notify | Available via AppSync GraphQL subscriptions, costs extra |
| Self-hosting Option | Fully open-source, can self-host with Docker | Proprietary AWS services, no self-hosting |
| AWS Integration | Limited, via external tools or custom setup | Deep integration with Lambda, S3, CloudFront, etc. |
| CLI and Tooling | Simple CLI for local development, Studio UI for management | Powerful CLI with code generation, but complex and AWS-dependent |
| Free Tier Limits | 500 MB database, 1 GB storage, unlimited auth users | 1,000 MAU for auth, 5 GB storage, 250k GraphQL operations |
The Verdict
Use Supabase if: You're building a new project and want a free, open-source backend with a real database. Ideal for startups, indie devs, or anyone avoiding vendor lock-in.
Use Aws Amplify if: Your organization is all-in on AWS and you need tight integration with Lambda, S3, or other AWS services for enterprise compliance.
Consider: Firebase if you prefer a NoSQL database and don't mind Google's ecosystem—it's simpler than Amplify but with similar lock-in.
Supabase offers a real-time Postgres database with row-level security for $0 in development, while Amplify charges for basic features like GraphQL APIs. You get more control without vendor lock-in.
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