2FA Authenticator (2FAS)

35.2K reviews
Content rating
PEGI 3
5M+
Downloads
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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
19 Oct 2026

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

34.3K reviews
Ben Lam
7 March 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
51 people found this review helpful
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2FAS
7 March 2026
Thank you for the positive feedback. We appreciate it greatly!
bakenfat
6 November 2026
A Must Have for EVERY website or App that uses Authentication. Be sure to Export (back up/save) your token settings to OUTSIDE of your phone wherever you prefer. I use external HDD bc its in-house, safer. After 1st setup of multiple tokens and then 1st Export, I Export after every new token, if I remember lol. Importing your token settings to a new phone is easy, Android to Android, Samsung to Revvl & vice versa. I don't know about iPhone. I also recommend using an open sourced Password Manager.
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2FAS
7 November 2026
Thank you for the recommendation! We appreciate it greatly!
J
28 October 2026
Stopped starting. Lost access to app codes. I looked up this issue and it looks like it's an outstanding bug that has not been resolved for days. I can't rely on this application any longer. As soon as the bug is fixed, I'll be moving on to a different app.
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What's new

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