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Tofu

An easy-to-use, open-source two-factor authentication app designed specifically for iOS.

Tofu generates one-time passwords to help you protect your online accounts. These passwords are used together with your normal password when you sign into services like Google, Facebook, Dropbox, Amazon, and GitHub.

Tofu works with all services that provide two-factor authentication using the HOTP and TOTP algorithms. It does not require a network or cellular connection and can be used in airplane mode.

Installation

Tofu is available for free on the App Store.

Download on the App Store

Issuer icons

Here's how you can help add new icons to the app:

  1. Fork and clone this repo.

  2. Add your icon to the IssuerIcons/ directory.

    The icon should be a square PNG without rounded corners and without borders. It must be at least 196x196 pixels but we prefer larger sizes such as 1024x1024.

  3. Run ./GenerateIssuerIconAssets.sh from the root of the repo.

  4. Add an entry for the icon to the imageNames dictionary.

    The key should be the string that shows up in the account's Issuer field when scanning a QR code for the service. The value should be the name of the icon file.

  5. Commit your changes and open a PR.

Here's an example commit for adding a new icon: 692e32a

If you don't feel comfortable adding icons yourself, you can ask others to do so by opening issues using the Issuer Icon Request template.

Beta testing

To avoid releasing broken versions of Tofu on the App Store, we rely on beta testers to discover and report bugs and other issues.

If you'd like to help us test new versions of the app, use this link to join the TestFlight beta: https://testflight.apple.com/join/LLe6CFdo

To leave the beta, open the TestFlight app, tap on Tofu Authenticator, scroll to the bottom and tap on "Stop Testing". Then re-install the release version of Tofu from the App Store.