Tofu Authenticator 4+

Two-factor Authentication

Calle Luks

Designed for iPhone

    • 4.6 • 94 Ratings
    • Free

iPhone Screenshots


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.

Features include:

- Scan the QR code your issuer provides to automatically add your account.
- Search your accounts by name to quickly find the one you're looking for.
- Support for both counter-based and time-based one-time passwords with 6 or 8 digits using the SHA1, SHA256, and SHA512 algorithms.
- Requires no network or cellular connection and can be used in airplane mode.
- All your account details are safely stored in the iOS keychain.

Tofu is open source and free software licensed under the ISC license. The source code is available for review and modification on

What’s New

Version 1.11

- New issuer icons.

Ratings and Reviews

4.6 out of 5
94 Ratings

94 Ratings

Manfredgensenden ,

Best 2FA app

This is the best two-factor authentication app I’ve used! It’s clean, neat, and beautiful. The account icons make it easy to find accounts and make using the app a pleasure. I can see 10 accounts on the screen at once (Max model), which is a lot more than the previous app I was using.
It also doesn’t track you or collect any information, which is great. It’s open source too.
Now the developer just needs to add a way for people to tip him on his website!

Mayday2000 ,

Simple reliable MFA app

This is a good, reliable, easy to use app. I would pay for this just for the privacy aspect. Add in a backup option and definitely worth a few bucks.

umurmurum ,

Great, simple app, but some major concern

This is the best 2FA option I’ve found so far. It’s to my taste: simply designed, unobtrusive and it just works. I did have some concerns though…

I’m not really sure if it has any iCloud backup functions or syncing capabilities. It makes using and relying the app feel precarious because I’m never sure if for whatever reason I lose or brick my phone whether or not my keys will be there.

I would really like some ability to save/sync my keys in the future, or at least some assurance that it’ll always be tied to my iPhone.

Besides that, some options in settings and additional configuration would be great. It feels a little *too* bare.

Please consider, devs!

App Privacy

The developer, Calle Luks, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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