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2FA Authenticator (2FAS)

2FA Authenticator (2FAS)

#1 Rated 2FA Authenticator

35K ratings
715 reviews
💼 Business
📊 Productivity
Free

Details

  • Released
  • Updated

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
iphone
ipad
watch
📌Ready
Reviews summary↘︎
⭐715
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📝40+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 4 weeks
Updates frequency↘︎
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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

Summarized from real user reviews of 2FA Authenticator (2FAS). Based on 35K reviews and a 4.7/5 average, it highlights the 5 positives and 5 negatives reviewers mention most about this Productivity app.

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

6.0.0

September 14, 2026

It took us a lot of time and effort, but we're finally here! We've modernized the app's look, but at its core, it's the same functionality you've come to rely on. Stay tuned for more changes!

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User reviews

Most RecentHighest RatedLowest Rated

Awesome

Doesn’t hack
CooldogvrrCooldogvrr

Big problem without iOS 18.6 or later

App apparently won’t update properly if you are using an older version of iOS.
Mobile2bMobile2b

Apple Watch hard to use

The Apple Watch app needs to be improved. I have keychain sync turned off so the Apple Watch won’t work. I wished I knew before I downloaded it in order to avoid this app.

I also don’t like the idea of iCloud sync being enabled by default.
SaltyGrizzlySaltyGrizzly

Nice solution for iPhone and watch

I’ve been using this app for a while now and really appreciate the sync capabilities between my iPhone and Apple Watch. The latest update created additional black space between the tokens, effectively reducing the text size, making it more difficult to see and I don’t see a way to adjust it font size. Otherwise a great app!
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Wpoole2012Wpoole2012

Like it a lot!

just switched to this from authy. liking it a lot, but the apple watch minimum version being 26.2 prevents me from installing it on my SE. :<
NikοNikο
See 710 more reviews

Developer apps

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

Private, Secure, Local-first.

📊 Productivity

(22)

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.