In This Comparison
300%+ average ROI from custom software within three years of deployment
Source: Forrester 2024
3-10x faster development speed when using AI coding assistants
Source: McKinsey 2025
Side-by-Side Comparison
| Category | Clerk | Supabase |
|---|---|---|
| Scope | Dedicated auth | Full backend + auth |
| Pricing | $25/mo | $25/mo |
| Auth Quality | Excellent | Good |
| Best For | Best auth UX | Supabase users |
| UI Components | Polished pre-built components | Basic components |
Clerk
- Scope
- Dedicated auth
- Pricing
- $25/mo
- Auth Quality
- Excellent
- Best For
- Best auth UX
- UI Components
- Polished pre-built components
Supabase
- Scope
- Full backend + auth
- Pricing
- $25/mo
- Auth Quality
- Good
- Best For
- Supabase users
- UI Components
- Basic components
Winner by Category
Best for Auth_quality
ClerkPolished auth UI components and user management
Best for Value
SupabaseAuth plus database, storage, and functions for same price
Best for Rls
SupabaseNative Row Level Security integration with auth
Our Recommendation
Use Supabase Auth if you are using Supabase's backend. Choose Clerk for standalone auth with the best developer and user experience.
“The best tool depends on what you are building and how you work. There is no universal winner. Pick the one that fits your workflow and budget, then ship something.”
When to Choose Each Tool
Choose Supabase
Using Supabase as your backend
Choose Clerk
Need the best auth experience as a standalone service
Overview
Supabase and Clerk both provide authentication but in different packages. Supabase includes auth as part of its PostgreSQL-based backend platform, with native Row Level Security integration. Clerk is a standalone auth service with polished pre-built UI components, user management, and organisation features.
Choosing
If you are using Supabase for your database and backend, its built-in auth is the simpler choice with RLS integration. If you want the best possible auth UX with pre-built components regardless of your backend stack, Clerk is the dedicated solution.
Frequently Asked Questions
Can I use Clerk with Supabase?
Yes, but it requires custom JWT setup to connect Clerk auth with Supabase's RLS. Using Supabase's built-in auth is simpler.
Which has better pre-built UI?
Clerk. Its sign-in, sign-up, and user profile components are more polished and customisable.
Which is cheaper?
Supabase includes auth with its $25/month plan that also includes database and storage. Clerk's $25/month is for auth only.
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