Supabase Auth vs Firebase Authentication
Learn how Supabase Auth and Firebase Authentication differ in their key features like authentication, enterprise auth, security, user management and compliance, so you can decide which of these authentication providers is best for you.
Supabase Auth
Feature Comparison
Supabase Auth offers broader feature coverage than Firebase Authentication, supporting 34 features compared to 25. Supabase Auth fully covers extensibility and platform.
Supabase does not offer built-in passkey authentication but offers a third‑party integration with Corbado to support Passkeys
User sessions are long‑lived by default and can be time‑boxed or configured with inactivity timeouts on paid plans
Supabase lets developers control session duration, enforce inactivity timeouts and revoke sessions through the Admin API
Email templates and FirebaseUI can be localized; set the language with a `languageCode` property or override CSS for more than 40 languages
| Supabase Auth | Firebase Authentication | |
|---|---|---|
Supabase does not offer built-in passkey authentication but offers a third‑party integration with Corbado to support Passkeys | ||
User sessions are long‑lived by default and can be time‑boxed or configured with inactivity timeouts on paid plans | ||
Supabase lets developers control session duration, enforce inactivity timeouts and revoke sessions through the Admin API | ||
Email templates and FirebaseUI can be localized; set the language with a `languageCode` property or override CSS for more than 40 languages | ||
Compliance Comparison
Firebase Authentication offers significantly broader coverage than Supabase Auth, supporting 6 certifications and regulatory frameworks compared to 3 for Supabase Auth.
CCPACompliant
GDPRCompliant
HIPAACompliant
ISO 27001Certified
ISO 27017Certified
ISO 27018Certified
SOC2Compliant| Compliance | Supabase Auth | Firebase Authentication |
|---|---|---|
| CCPACompliant | ||
| GDPRCompliant | ||
| HIPAACompliant | ||
| ISO 27001Certified | ||
| ISO 27017Certified | ||
| ISO 27018Certified | ||
| SOC2Compliant |
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Authsignal —