AI Coding Tools: Supabase vs Firebase for Modern Apps

As a solo founder or indie hacker, choosing the right backend for your app can feel overwhelming, especially when it comes to popular options like Supabase and Firebase. Both claim to simplify development and speed up deployment, but which one actually lives up to the hype? In this article, we’ll break down the differences between Supabase and Firebase, so you can make an informed decision for your next project in 2026.

Overview: What Do Supabase and Firebase Offer?

Supabase is an open-source Firebase alternative that provides a real-time database, authentication, and storage. It’s built on top of PostgreSQL, which means you get the power of SQL with the ease of use that comes with a managed service.

Firebase, on the other hand, is a Google-backed platform that provides a suite of tools for app development, including real-time databases, authentication, cloud functions, and hosting. It’s particularly strong in its integration with other Google services.

Feature Comparison: Supabase vs Firebase

Here's a detailed comparison of key features:

| Feature | Supabase | Firebase | |-----------------------|-----------------------------------|-----------------------------------| | Database | PostgreSQL (real-time) | Firestore (NoSQL) | | Authentication | Email, OAuth, Magic links | Email, Phone, OAuth | | Storage | File storage with SQL queries | Cloud Storage | | Pricing | Free tier + $25/mo for pro | Free tier + $24.99/mo for Blaze | | Hosting | Managed hosting | Firebase Hosting | | Real-time | Yes | Yes | | Best for | SQL users, open-source fans | Google ecosystem users, NoSQL fans | | Limitations | Less mature ecosystem, fewer integrations | Can get expensive, NoSQL might not suit all use cases | | Our Take | We use Supabase for SQL-heavy projects because it feels familiar and powerful. | We don't use Firebase due to its NoSQL limitations for our data models. |

Pricing Breakdown

Both platforms offer free tiers, which are great for testing and initial development. However, costs can escalate as your app scales. Here’s a closer look at their pricing:

| Plan Type | Supabase Pricing | Firebase Pricing | |------------------|-------------------------------------|---------------------------------------| | Free Tier | $0 for 500MB database, 2GB storage | $0 for 1GB storage, 50,000 reads/day | | Pro Tier | $25/mo for 10GB database, 20GB storage | $24.99/mo for Blaze plan (usage-based) | | Additional Costs | $15/mo for every additional 10GB | Usage-based pricing can vary widely |

Use Cases: When to Choose Supabase vs Firebase

Choose Supabase if:

• You prefer SQL databases and want to leverage existing SQL knowledge.
• You’re building a project with complex queries and relationships.
• You want an open-source solution that you can host yourself if needed.

Choose Firebase if:

• You’re heavily invested in the Google ecosystem and plan to use other Google services.
• You need a real-time database but are okay with NoSQL.
• You want a more mature platform with extensive documentation and community support.

Limitations to Consider

While both tools have their strengths, they also have notable limitations:

• Supabase: Being relatively new, it has fewer integrations and a smaller community compared to Firebase. You might run into issues if you need specific third-party services.

• Firebase: The NoSQL structure can be a hurdle for those used to SQL databases, especially if your data is relational. Additionally, costs can ramp up quickly with increased usage.

What We Actually Use

In our experience, we gravitate towards Supabase for projects that require complex SQL queries and relationships. The familiarity of SQL combined with its open-source nature aligns well with our values. If you're building something that fits this mold, give Supabase a shot.

If you're already entrenched in the Google ecosystem or building a simple app that doesn’t require complex queries, Firebase can be an excellent choice.

Conclusion: Start Here

If you're just starting out, I recommend testing both platforms with a small project to see which one aligns better with your workflow and data needs. Supabase is great for SQL lovers and those who appreciate open-source flexibility, while Firebase is a solid choice for those who prioritize integration with Google services.