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2FAS Auth

Two-step login codes, with a backup so you can't lose them

1.5k GitHub stars GPL-3.0 Privacy & Security

Made by twofas · free and open source

Heads up: the makers say this app contains art or files that aren’t open source.

APK fileVersion 6.0.558.3 MBupdated 6 days ago

This comes straight from 2FAS Auth’s own GitHub page, and it’s free. Need help installing?

About this app

2FAS Auth makes the 6-digit codes that many sites now ask for after your password. Scan the QR code a site shows you once, and from then on the app produces a fresh code every 30 seconds. It works with anything that follows the usual TOTP or HOTP standard, which covers Google, Microsoft, Dropbox and most of the rest.

There is a backup option so a lost or replaced phone does not lock you out of all your accounts at once, and the app pairs with the 2FAS browser extension for signing in on a computer. Setup is a scan and a tap.

One note: the icons and artwork in the app are not part of the open source project and carry their own licence. The code itself is GPL.

From the app’s home page

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Last worked on 6 days ago · Listed here since 2026 · info updated 3 minutes ago