FreeOTP

FreeOTP is a two-factor authentication application for systems utilizing one-time password protocols. Tokens can be added easily by scanning a QR code.

FreeOTP implements open standards:

• HOTP (HMAC-Based One-Time Password Algorithm) RFC 4226
• TOTP (Time-Based One-Time Password Algorithm) RFC 6238

This means that no proprietary server-side component is necessary: use any server-side component that implements these standards.

Screenshots

Download FreeOTP for Android

• F-Droid
• Google Play

Contributing

Pull requests on GitHub are welcome under the Apache 2.0 license, see CONTRIBUTING for more details.

Permissions

The FreeOTP app uses the following permissions

Alternatives

Here are some open-source alternative apps providing similar functionality:

• Aegis
• FreeOTP+
• Proton Authenticator