Clerk vs Firebase
Clerk and Firebase are both developer tools tools aimed at developers. Both have a free plan.
| Pricing | Freemium · $25 | Freemium |
| Starting price | $25/mo | Not published |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Developers | Developers |
| Platforms | web | web, ios, android |
| Country | US · 2019 | US · 2011 |
| Rating | — | — |
Choose Clerk if
React and Next.js teams who want production auth with great UX immediately.
- Beautiful components save weeks of work
- Generous free tier
- Organizations and B2B features built in
Look elsewhere if: Teams requiring full ownership of auth data (Better Auth, Keycloak) or non-JS stacks.
Choose Firebase if
Mobile and Flutter developers and teams in the Google ecosystem.
- Best-in-class mobile tooling and real-time sync
- Free tier suits prototypes and small apps
- Deep Google Cloud integration
Look elsewhere if: Relational data needs or teams wary of lock-in (Supabase, Neon).
Clerk vs Firebase pricing
Clerk
- Hobby$050,000 monthly retained users per app, 3 dashboard seats
- Pro$25/mo$20/mo billed annually; 50k MRUs, then from $0.02/MRU
- Business$300/mo$250/mo billed annually; 10 dashboard seats
- EnterpriseCustomAnnual billing; 99.99% uptime SLA, volume discounts
Firebase
- Spark$0No-cost usage limits, no payment method needed
- BlazePay as you goUsage-based beyond free quotas; $300 free credit if eligible
Clerk · Key features
- Prebuilt UI components for auth and user profile
- Email, password, passkeys, OTP and 20+ social providers
- Organizations, roles and permissions (B2B)
- MFA, bot protection and session management
- Clerk Billing for subscriptions and feature gating
- SDKs for Next.js, React, Remix, Expo, Astro and more
Cons
- User data lives with a third party
- Per-user (MRU) cost grows with scale
- Enhanced features (SAML, MFA) cost extra
Firebase · Key features
- Firestore and Realtime Database with offline sync
- Authentication with many providers and phone auth
- Cloud Functions, Hosting and Cloud Storage
- Cloud Messaging push, Remote Config and A/B testing
- Crashlytics, Performance Monitoring and Analytics
- Extensions marketplace and Genkit AI framework
Cons
- NoSQL data modeling pitfalls
- Costs can spike with read/write volume
- Heavy vendor lock-in
Clerk vs Firebase: FAQ
Do Clerk and Firebase have a free plan?
Yes, both Clerk and Firebase have a free plan; paid plans add more usage and features.