Firebase Authentication vs Better Auth
Learn how Firebase Authentication and Better Auth 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.
Firebase Authentication
Better Auth
Feature Comparison
Better Auth has significantly broader feature support than Firebase Authentication, with 42 supported features versus 25. Better Auth fully covers authentication.
Magic link and email OTP plugins allow passwordless sign-in using one-time links or codes
Supports multiple social providers through built-in OAuth and generic OAuth plugin for custom providers
The passkey plugin adds FIDO2 / WebAuthn support for passwordless, phishing‑resistant sign‑in
Session settings allow you to configure expiresIn and updateAge to create longer or shorter sessions
Email templates and FirebaseUI can be localized; set the language with a `languageCode` property or override CSS for more than 40 languages
Multi-language is supported via the i18n plugin
| Firebase Authentication | Better Auth | |
|---|---|---|
Magic link and email OTP plugins allow passwordless sign-in using one-time links or codes | ||
Supports multiple social providers through built-in OAuth and generic OAuth plugin for custom providers | ||
The passkey plugin adds FIDO2 / WebAuthn support for passwordless, phishing‑resistant sign‑in | ||
Session settings allow you to configure expiresIn and updateAge to create longer or shorter sessions | ||
Email templates and FirebaseUI can be localized; set the language with a `languageCode` property or override CSS for more than 40 languages | Multi-language is supported via the i18n plugin | |
Compliance Comparison
Firebase Authentication offers significantly broader coverage than Better Auth, supporting 6 certifications and regulatory frameworks compared to 0 for Better Auth. Since Better Auth is open source and does not include compliance certifications, you’ll need to manage compliance yourself.
CCPACompliant
GDPRCompliant
ISO 27001Certified
ISO 27017Certified
ISO 27018Certified
SOC2Compliant| Compliance | Firebase Authentication | Better Auth |
|---|---|---|
| CCPACompliant | ||
| GDPRCompliant | ||
| ISO 27001Certified | ||
| ISO 27017Certified | ||
| ISO 27018Certified | ||
| SOC2Compliant |
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Descope —
Authsignal —