2FA Authenticator (2FAS)

4.4
31.7K reviews
5M+
Downloads
Content rating
PEGI 3
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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://discord.gg/q4cP6qh2g5

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
26 Aug 2025

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

4.4
30.9K reviews
Armin Ghayur Sadigh
11 July 2021
The app is almost perfect and simple, but there are two issues imo. One, the fingerprint scan doesn't start when the prompt is displayed and it takes the app some time to interact with the sensor, and even after a successful scan, it takes its time to display an animation which is rather long. Two, the amount of icons available for accounts is too low. Support for 3rd party icon packs would be nice
5 people found this review helpful
Did you find this helpful?
2FAS
16 July 2021
Hi Armin! Thank you so much for your review and suggestions! We'll take them into consideration for future improvements! As for the icons right now we offer more than 200 of them. Do you have some specific ones in mind that are missing?
Ryan Travis
14 September 2025
One of the best authenticator apps I have used with a very nice user friendly ui and cloud backup linked to Google Drive in a hidden folder encrypted with whatever password you set so if you loose access to your phone you can still get in to your accounts!
2 people found this review helpful
Did you find this helpful?
2FAS
15 September 2025
Thank you for the review Ryan! We appreciate it greatly 😊
Yoojun Zhou (NotYoojun.!)
10 August 2025
Love the grouping and customizable icons! However it would be perfect if: 1. Add a "Backup immediately" option in the Android app 2. Make the browser extension, or a desktop app that works exactly like the Android one (filling OTPs without touching my phone!)
5 people found this review helpful
Did you find this helpful?
2FAS
11 August 2025
Thank you for the feedback and review!

What's new

- Fix Chinese translations
- Fix QR code sharing support for UTF-8 characters
- Fix white characters removal when parsing a service