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2FA Authenticator (2FAS)

2FA Authenticator (2FAS)

#1 Rated 2FA Authenticator

36K ratings
724 reviews
💼 Business
📊 Productivity
Free

Details

Released
August 4, 2017
Updated
October 22, 2026

Features

Developer

Two Factor Authentication Service Inc.
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2FA Authenticator (2FAS) screenshot #1 for iPhone
2FA Authenticator (2FAS) screenshot #2 for iPhone
2FA Authenticator (2FAS) screenshot #3 for iPhone
2FA Authenticator (2FAS) screenshot #4 for iPhone
2FA Authenticator (2FAS) screenshot #5 for iPhone
2FA Authenticator (2FAS) screenshot #6 for iPhone
2FA Authenticator (2FAS) screenshot #7 for iPhone
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About

Securely log in to your online accounts with two-factor authentication. This app protects your personal data and passwords from cyber threats with a simple, private, and open-source solution. It offers easy token restoration, app protection, and offline functionality.

✓Two-factor authentication
✓Token backup and restore
✓App protection with passcode/biometrics
✓Open-source and transparent
✓Offline functionality
✓Cross-device sync
✓One-tap authentication with browser extensions
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What users say about 2FA Authenticator (2FAS)

Reviews of 2FA Authenticator (2FAS) are mostly positive: the Productivity app is rated 4.7/5 from 36K App Store ratings. What users like most: efficient and fast, secure and private. Top complaints: occasional bugs and crashes, lack of password/PIN protection. Summarized from real user reviews.

Positive things

  • 🚀Efficient and fast
  • 🔒Secure and private
  • 👍Simple and intuitive UI
  • 💡Customizable icons and folders
  • 🔒iCloud backup and sync

Negative things

  • 🐛Occasional bugs and crashes
  • 🔒Lack of password/PIN protection
  • 🕰No Apple Watch app
  • 🐛Issues with push notifications
  • 🕰Missing desktop/web app
See all reviews
+1

What's New in 2FA Authenticator (2FAS)

6.0.1

October 22, 2026

We’ve kept refining the new design and carefully hunted down every detail that needed a bit more polish. Also: • We’ve added new importers and improved the existing ones, • Cells now come in a new “Large” variant, • You can now ignore an auto-detected service. Plus a ton of bug fixes and smaller improvements!

More

User reviews

Most RecentHighest RatedLowest Rated

The best

Does what it says in the description. Thank you so much, a life saver when you need to move your 2FA’s to different ecosystems.
Sstefan-dan1

Très bien

Efficace et rapide
AAbc3352

Response from developer

Merci!

Happy long time user

A breeze to set up and import from another authenticator. It also syncs between like devices and is very secure.
TThemePro

2FA review

I need this app to get access to my classes but the fact that there is a 30 second timer to put a six digit code is kind of dumb
SStudent1,000

Great

Does exactly what I need it to including backup to cloud which makes it available on all my devices. Props to the author.
SShiftSlash
See 719 more reviews

Developer apps

Password Manager (2FAS Pass)
Password Manager (2FAS Pass)

Private, Secure, Local-first.

📊 Productivity

(26)

Free
In-App Purchases
See developer apps

User experience

🐞

Reported Bugs

3 issues

Tokens disappearing after device changes

Bug

Push notification failures

Bug

Incompatibility with older devices

Bug
✨

Requested Features

5 requests

Alphanumeric passcode option

Feature

Custom icon uploads

Feature

Apple Watch app

Feature

Desktop/web app

Feature

Improved support and communication

Feature

FAQ

What does this app do?

This app enables two-factor authentication (2FA) or multi-factor authentication (MFA) for your online accounts. It helps verify your identity and securely log in, protecting your personal data and passwords from cyber threats.

How does the app protect my accounts?

It uses TOTP and HOTP algorithms to generate time-based or counter-based one-time passwords. You can also enable app protection with a passcode or biometrics, and easily restore your authentication tokens with backups.

Is this app free to use?

Yes, the app is 100% free to use. It does not require an account, does not store any passwords or metadata, and works offline, ensuring maximum privacy and anonymity.

What devices is this app compatible with?

The app syncs across your mobile devices, suggesting compatibility with both Android and iOS platforms. It also offers browser extensions for one-tap authentication.

What are the main benefits of using this authenticator app?

Key benefits include enhanced security for your online accounts, easy token restoration, app protection via biometrics, offline functionality for privacy, and a simple, transparent, open-source interface.