2FA Authenticator (2FAS)

4.3
32.1K reviews
5M+
Downloads
Content rating
Everyone
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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
Updated on
Mar 11, 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

4.3
31.3K reviews
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
3 people found this review helpful
Did you find this helpful?
2FAS
March 7, 2026
Thank you for the positive feedback. We appreciate it greatly!
Allan
November 16, 2025
Excellent authenticator! I've been using it for a few years and have encountered no problems. I especially like the Google backup feature that has the option to password protect the backup, bio-metric and PIN access, dark theme, and the ability to automatically insert the code within a browser without copying and pasting. I've tried many other authenticators, but I find this one outshines the others.
37 people found this review helpful
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2FAS
November 17, 2025
Glad to have you with us Allan. Thank you for choosing our app!
John Behling
November 16, 2024
It's easy to set up, intuitive, and has always worked when I needed it. Also, not swimming in ads, which is a huge plus. I also just replaced my phone, and was worried about getting this set up on my new device. Turns out the tokens were backed up on Google Drive, so as soon as I installed this, BAM! Everything was there, already working. I couldn't be happier!
119 people found this review helpful
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2FAS
June 27, 2023
Happy you like it! Thanks for the review! 😊

What’s new

- Dynamic colors
- Update translations