Open Source
Sanmer Authenticator
Keep your 2-step sign-in codes in one simple app
This comes straight from Sanmer Authenticator’s own GitHub page — it’s free. Need help installing? →
About this app
Sanmer Authenticator holds the short codes (2FA) that websites and apps ask you for after your password. You add an account once, usually by scanning its setup code, and from then on the app shows a fresh number on a timer. It all happens on the phone, with no account to make and no internet needed.
You can lock the app with a password or your fingerprint and stop it showing up in screenshots. Codes you delete go to a trash bin first, so a slip of the thumb does not lock you out, and you can import and export the whole set when you move to a new phone. If your phone's clock drifts, it can check the time against a time server so your codes still line up.
It needs Android 11 or newer. The app is small and plain, comes in English and Simplified Chinese, and has almost no documentation beyond the screens themselves.
From the app’s home page
- See the codeHow it’s made — every line is public
- Questions & commentsTalk with the people who make it
- Report a problemTell the makers something is broken
- All versionsOlder downloads and what changed
- LicenseThe rules for using and sharing it
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