2FA Authenticator (2FAS)

Name: 2FA Authenticator (2FAS)
Author: 2FAS

6.1.0

Play Protect

2FAS

4.595M+ installs

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2FAS is the easiest way to enable two-factor authentication (or multi-factor authentication) to verify your identity and securely log in to accounts to keep your personal data and passwords protected…

2FA Authenticator (2FAS): TOTP and HOTP codes offline

By Kelvin Ooi

Security and privacy editor

TOTP and HOTP one-time codes for two-step sign-in
Works offline, with no account required
Token backups for restoring accounts you have added
Passcode or biometric lock on the app itself
Sync across your mobile devices
One-tap login through 2FAS browser extensions

What 2FAS is for and who it suits

2FAS is a two-factor authentication app. It generates the six-digit codes that online services ask for after a password, using the TOTP and HOTP algorithms. The listing presents it as free.

It suits people who turn on two-step verification for email, banking, social or work accounts and want the codes on their phone. Because it runs without an account, it does not require signing up to a service before you can add a login.

Generating TOTP and HOTP login codes

TOTP codes change on a timer, and HOTP codes advance with each use, so the app supports both kinds of account. The listing says the app works offline, so codes can be generated without a network connection.

The listing also describes an interface built for simplicity, though it gives no detail on how accounts are added.

Backups, app lock and open-source code

The developer lists backups as the way to restore your tokens if you lose access to the device they were added on. Backups are the main safeguard for keeping account access after a phone change.

You can protect the app itself with a passcode or with biometrics such as a fingerprint. The listing says the code is open source and community-driven, so anyone can read how it is built.

Syncing codes and one-tap login in browsers

The app syncs across your mobile devices, so the same set of accounts can be used on more than one phone.

With the 2FAS browser extensions installed, the listing says you can approve a login with one tap instead of typing the code by hand.

Privacy: no account, no stored passwords

The listing states that 2FAS does not store any passwords or metadata, and that it can be used anonymously with no account. It is available in several languages.

A set of setup and support guides is listed as coming soon. Support questions are routed to the developer's Discord server.

What's new

Oct 19, 2026

- Support multi batch import from Google Authenticator
- Expand import options
- Add Lithuanian 🇱🇹 and Slovak 🇸🇰 translations
- Update strings
- Update icons

About this APK

The build we hold is 2FA Authenticator (2FAS) 6.0.5 (APKS split bundle) for Android 10 and up.

Version: 6.0.5; 5000040
Requires Android: 10+
Target Android: 17

Package ID: com.twofasapp
Format: APKS split bundle
Malware scan: Google Play Protect
Permissions: 13 declared · 1 sensitive; Camera
Signed by: CN=Unknown, O=Unknown
Certificate SHA-256: b1950ed556e13602771138c935a143d128d020af62cb06fe7e411eed39890c0b