Clerk

Fallback auth — 10K MAU free

Clerk

Role

Auth-only fallback if Firebase Auth becomes unavailable.

Free tier

• 10,000 monthly active users
• All social providers + MFA
• Organizations / multi-tenant
• Pre-built React components

Card / subscription required?

NO. Sign-up requires email only.

Alternatives

• Supabase — auth + DB
• Firebase Spark — primary

Swap cost

High — every site’s <AccountPanel> is wired to Firebase. Swap replaces @chirag127/firebase-init with a Clerk equivalent + leaves Firestore (no longer paired) needing a new home.

Why fallback only

Lower MAU ceiling than Firebase Auth (10K vs unlimited), and Clerk doesn’t pair with a free database.

Cross-refs

• Firebase Spark — primary
• Supabase

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