Side-by-side comparison · Databases & Backend
Clerk vs Firebase vs Supabase
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Anyone building a web or mobile app who needs user accounts and logins without writing them from scratch.
Pick it if: Teams building mobile or real-time apps, especially if you already live in Google's world.
Pick it if: Anyone building an app with AI tools who needs somewhere real to keep user accounts and data.
Clerk scores highest overall, but Supabase gives you more for your money. Which one is right comes down to what you value most.
Overview
| Attribute | Clerk | Firebase | Supabase |
|---|---|---|---|
| In one line | Ready-made sign-up, login and user accounts you can add to an app in minutes. | Google's backend for mobile and web apps, with logins, data and hosting in one. | A ready-made database, logins and file storage for apps you build with AI tools. |
| Pricing model | Freemium | Freemium | Freemium |
| Starting price | $20/mo | Pay as you go | From $25/mo |
| Free plan | Yes | Yes | Yes |
| Works with Claude Code | Yes | Yes | Yes |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Clerk | Firebase | Supabase |
|---|---|---|---|
| Overall rating | 4.4Winner | 4.1 | 4.3 |
| Ease of useHow quickly someone non-technical gets value from it. | 4.5 | 3.5 | 4.0 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 4.5 | 4.5 | 4.5 |
| Output qualityHow good the results are before you fix them. | 4.5 | 4.0 | 4.5 |
| Value for moneyWhat you get for the price, including the free plan. | 4.0 | 4.0 | 4.5 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.5 | 4.5 | 4.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Clerk | Firebase | Supabase |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | No | No | No |
| Desktop app | No | No | No |
| Browser extension | No | No | No |
| API access | Yes | Yes | Yes |
| Teams & business | |||
| Team workspace | Yes | Yes | Yes |
| Enterprise plan or SSO | Yes | Yes | Yes |
| Connects to other apps | Yes | Yes | Yes |
| Open source or self-hosted | No | No | Yes |
| AI abilities | |||
| Works with your files | No | Yes | Yes |
| Understands images | – | Yes | No |
| Makes images | No | Yes | No |
| Makes video | No | No | No |
| Writes code | No | Yes | Yes |
| Runs agents or automations | – | Yes | Yes |
| Learns your brand or style | – | No | No |
| Works in many languages | Yes | – | – |
| Capabilities score | 6/ 17 | 10/ 17 | 9/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Clerk | Firebase | Supabase |
|---|---|---|---|
| Plans | Hobby Free New apps and side projects. | SparkOur pick Free Early projects and apps with a small audience. | Free Free Prototypes, side projects and seeing if it suits you. |
ProOur pick $20/mo billed yearly, or $25 monthly Apps with paying customers. | Blaze Pay as you go, no monthly fee Anything that might grow past the free quotas. | ProOur pick From $25/mo Anything real people will use. | |
Business $250/mo billed yearly, or $300 monthly Growing companies that need compliance paperwork. | Team From $599/mo Companies that need SSO and compliance paperwork. | ||
Enterprise Custom Large companies with strict security needs. | Enterprise Custom Large products with uptime guarantees. | ||
| Which plan to pick | Build on Hobby. It's enough until you have customers who care about the Clerk branding or need multi-factor login, then move to Pro. Business only matters when a customer asks for a SOC 2 report. | Spark is enough until real users arrive. Move to Blaze when you need Cloud Functions or you're close to a quota, and set a budget alert the moment you do. There's no middle tier, so your bill goes straight from nothing to usage based. | Build on Free. Switch to Pro the day you share the app with anyone outside your team, mostly so the project stops pausing. Team is a big jump that only makes sense once a client or auditor asks for SSO or a SOC 2 report. |
Key features
Pros and cons
| Attribute | Clerk | Firebase | Supabase |
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Who each one is for
| Attribute | Clerk | Firebase | Supabase |
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Questions people ask
Which is better, Clerk, Firebase or Supabase?
Clerk scores highest overall in our ratings (Clerk 4.4/5, Firebase 4.1/5 and Supabase 4.3/5). Clerk is best for adding sign-up and login to an app and Google, Apple and passwordless sign-in. Firebase is best for mobile app backends and live-updating data and chat. Supabase is best for backend for AI-built apps and user logins and permissions.
Which is cheaper, Clerk, Firebase or Supabase?
Clerk: There's a free plan, and paid plans start at $20/mo. Firebase: There's a free plan, and paid plans start at Pay as you go. Supabase: There's a free plan, and paid plans start at From $25/mo.
Which is easier to use, Clerk, Firebase or Supabase?
Clerk rates highest for ease of use in our scores. Anyone building a web or mobile app who needs user accounts and logins without writing them from scratch.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
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