Clerk vs Supabase Auth

Clerk vs Supabase Auth

Neither is better for everyone. Clerk suits teams wanting hosted auth components separate from their database. Supabase Auth suits projects already on Supabase that want auth and database access rules in one system.

Clerk vs Supabase Auth at a glance

This page compares Clerk and Supabase Auth using only what the sources below say about each. Where one is the better pick for a situation, we say which and why.

We read each source on 2026-11-05. Prices and limits change often, so confirm on the vendor's own page before you buy. A figure marked "one source only" was not matched by a second publisher.

When to pick each one

Pick Clerk if it matches your situation

Choose Clerk over Supabase Auth for teams wanting hosted auth components separate from their database.

Pick Supabase Auth if it matches your situation

Choose Supabase Auth over Clerk for projects already on Supabase that want auth and database access rules in one system.

What the sources say about Supabase Auth:

• Users can sign in with password, magic link, one-time password, social login and single sign-on.^[2]
• Auth uses JSON Web Tokens, and the token scopes database access on a row-by-row level when used with RLS policies.^[2]
• Any OAuth2 or OIDC-compatible identity provider can be added through custom OAuth/OIDC providers.^[2]

Limits and things to check

Clerk

• Clerk's updated pricing post (older) announced 10,000 MAUs free and a new Pro plan.^[4] One source only.
• Search summaries describe overage at about $0.02 per additional user above the allowance.^[1]
• 2026 third-party sources describe the free allowance as 50,000 monthly retained users rather than MAUs, conflicting with the 10,000 MAU figure.^[5] One source only.

Supabase Auth

• Supabase docs state that charges apply to Monthly Active Users, Monthly Active Third-Party Users, Monthly Active SSO Users and Advanced MFA add-ons.^[2]

Pricing as reported

Clerk

Pricing as reported for Clerk:

• Hobby: $0 ^[4] One source only, so confirm it on the vendor page.
• Pro: $25 per month ($20 per month billed annually per one third-party source; overage about $0.02 per additional user) ^[1]

Plan limits are longer than fit here and some sources disagree on them, so read the limits on the vendor pricing page.

Supabase Auth

Pricing as reported for Supabase Auth:

• Included with Supabase Free: $0 (50,000 monthly active users per third-party summaries) ^[6] One source only, so confirm it on the vendor page.
• Included with Supabase Pro: $25 per month (100,000 monthly active users included; overage $0.00325 per MAU per vendor pricing page as summarised in search) ^[3]

Where Continuum fits

We make Continuum Supabase Security Review. Weigh what we say here with that in mind. The tools above are the better choice when you want software you run yourself; ours is the better choice when you want a person to do or read the work.

Continuum Supabase Security Review (ours)

A human review of a Supabase app covering row level security policies, key exposure, storage rules, auth config and service-role usage.^[7]

What our own page says:

• It returns ranked findings with corrected SQL and a proof for each, in 48 hours.^[7]

Limits and things to check:

• It is a manual review of one app, not a continuous monitor.^[7]

Pricing as reported for Continuum Supabase Security Review:

• Supabase Security Review: Quoted on the page (48 hour turnaround) ^[7]

Suits a team running on Supabase that wants a person to read its policies and keys before launch.

Details on Continuum Supabase Security Review.

Running on Supabase?

Straight answers