2FA Authenticator (2FAS)

33.4K reviews
Content rating
PEGI 3
5M+
Downloads
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

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 from cyber threats — all from one app, 100% free!

The world’s most secure, private, and simple 2FA app.

Secure:
Easily restore your tokens with backups.
Add app protection with your passcode or biometrics.
2FAS is open-source, transparent, and community-driven.

Private:
2FAS syncs across your mobile devices.
An interface designed for simplicity.
One-tap authentication with 2FAS Browser Extensions.
Multi-language support.
Quick guides for setup and support. (COMING SOON)

Simple:
2FAS works offline.
2FAS doesn't store any passwords or metadata.
100% anonymous use, no account required.

It’s not too late to protect your data, so what are you waiting for? Protect your online accounts and services now with TOTP and HOTP algorithms.

Start using the 2FAS authenticator app today!

If you have any questions, talk with us on our Discord server: https://2fas.com/discord

Learn more about 2FAS:

Check our GitHub repository: https://github.com/twofas
Visit our website at: https://2fas.com/
Follow us on Twitter: https://twitter.com/2FAS_com
Subscribe on YouTube: https://www.youtube.com/@2FAS
Simple, safe and open source 2FA Authenticator app!
Updated on
Sep 25, 2026
Featured stories

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

Ratings and reviews

32.6K reviews
Brian Maloney
February 7, 2025
I seriously can't recommend this app enough. Great backup options and browser extensions that are easy to pair with the android app. Encrypted backups and easily shared between devices. Clean gui and simple to use. To top it off it's open source, I've used many other apps before but this ticks all the boxes. Love the fact the code are not kept in the browser and you have to approve them on your phone. And then it autofills for you. Thanks to the developers for creating an amazing product.
46 people found this review helpful
Did you find this helpful?
2FAS
February 8, 2025
You're more than welcome Brian 😁 We're just glad you're enjoying the app!
Chetz B
September 8, 2024
So far, so good. A simple UI, a good sync option, optional dark mode, active search, and hidden tokens. I've tried the backup/sync between my phone and tablet for 1 account and will gradually be migrating everything from Authy, as I've had enough of them killing a good thing. For a 5* rating, I'd love to see tiles as an option as well as the current lists, landscape view to match when my tablet is in landscape mode, and a timer when tokens are hidden.
15 people found this review helpful
Did you find this helpful?
2FAS
September 9, 2024
Thank you for the review and feedback!
Ben Lam
March 7, 2026
Feels much more secure than other apps after testing it out on a few accounts: 1. Does not collect any user data (this should be gold standard since the OTP generating algorithm works even without internet connection) 2. Locks you out of the app once you switch apps, requiring you to log back in using pin / biometrics 3. Ability to hide all other accounts' codes and only reveal the one tapped 4. Allows to import codes from other auth apps and sync with gdrive as backup
41 people found this review helpful
Did you find this helpful?
2FAS
March 7, 2026
Thank you for the positive feedback. We appreciate it greatly!

What’s new

Major update with refreshed look, smoother performance, and support for the latest Android improvements.

App support

About the developer
Two Factor Authentication Service, Inc.
help@2fas.com
1887 Whitney Mesa Dr Pmb 2130 #2130 Henderson, NV 89014-2069 United States
+1 725-240-1146

More by 2FAS

Similar apps