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Authenticator

Authenticator

Simple 2-factor authentication

422 ratings
294 reviews
🔧 Utilities
Free

Details

Released
December 3, 2013
Updated
June 1, 2019

Features

Developer

Matt Rubin
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Authenticator screenshot #1 for iPhone
Authenticator screenshot #2 for iPhone
Authenticator screenshot #3 for iPhone
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Reviews summary↘︎
⭐294
Reviews↘︎
📝14+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦w/o updates
Updates frequency↘︎
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About

This app provides a secure and straightforward way to protect your online accounts. It generates one-time passwords that, when combined with your regular password, significantly enhance your account security. The app operates offline, ensuring your sensitive data remains on your device.

✓Generates one-time passwords
✓QR code setup
✓Encrypted data storage
✓Time-based and counter-based OTP support
✓Offline operation
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What users say about Authenticator

Reviews of Authenticator are mixed: the Utilities app is rated 3.7/5 from 422 App Store ratings. What users like most: simple and easy to use, secure, no cloud backup. Top complaints: tokens easily deleted by accident, no backup/transfer options for tokens. Summarized from real user reviews.

Positive things

  • 🚀Simple and easy to use
  • 🔒Secure, no cloud backup
  • 👍Clean and intuitive UI
  • 💡Open-source and transparent

Negative things

  • 🐛Tokens easily deleted by accident
  • 🔒No backup/transfer options for tokens
  • 🔒Locked out when changing devices
  • 🐛Codes not working after app updates
See all reviews

What's New in Authenticator

2.1.2

June 1, 2019

This update fixes a crash that could occur when trying to manually enter a token on a 32-bit device (iPhone 5 or earlier).

User reviews

Most RecentHighest RatedLowest Rated

Simple, but effective

I’ve used this simple app for at least a decade, and it has never let me down, never crashed, and never held me ransom for a subscription fee. I keep thinking that someday Apple’s OS changes will render it inoperable, but so far it has sailed through all the upgrades.
PPDX_Kurt

If you get a new iPhone you are done…

Sorry but for me it’s not very nice to disable the possibility to back up my tokens in the apple cloud. Who the hell does backups and everything via iTunes this day? I don’t want to set up a new 1tb iPhone via iTunes! Perhaps this made sense in times of 64gb iPhones! But not now anymore! I will quit using this app and switch to something useful. What if I have two iPhones and two tablets? I just want to have it synced automatically and that’s it. I don’t wanna make 20 times 4 keys…
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JJayJoe72358

Open source, gratuit, sans pub, sur iOS

Parfait
BBaptiste.r1807

Doesnt work anymore

As at 2026 it is not operational. Didntbwork but i used another app and it was fine.
GGaijing91

How to export?

This is a great app that does nothing at all except display 2fa codes. All apps try to do everything. It is refreshing to see an app that does as little as possible.

A side effect of this is that it is not clear how to export the codes. Can the developer reply to this or email me and let me know?

I can handle complicated solutions like decrypting and dissecting a full phone backup if this is the only way. (but plz lmk where to get what)
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Ccom.apple.AppStore
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User experience

🐞

Reported Bugs

3 issues

Blank screen on iOS 26 upgrade

Bug

Codes not working on new devices

Bug

Unable to log in to accounts after token loss

Bug
✨

Requested Features

4 requests

Add biometric lock (Touch ID/Face ID)

Feature

Ability to export/backup tokens

Feature

Companion Apple Watch app

Feature

Folder/tag organization for accounts

Feature

FAQ

What does this app do?

This app is a free and open-source tool for two-factor authentication. It generates unique, time-sensitive one-time passwords (OTPs) that you use in addition to your regular passwords to log into supported online accounts, significantly increasing their security.

How does it enhance account security?

By requiring both your existing password and a one-time password generated by the app, it creates a much stronger barrier against unauthorized access. Even if someone obtains your regular password, they would still need the current OTP to log in.

Is this app free to use?

Yes, this application is completely free to use. It is also open source, meaning its code is publicly available for review and modification.

What devices is this app compatible with?

The provided description specifically mentions compatibility with iOS devices. It fully supports both time-based (TOTP) and counter-based (HOTP) one-time passwords as standardized in RFC 4226 and 6238.

How do I set up an account with this authenticator?

Setup is designed to be simple. You can add accounts by scanning a QR code provided by the service you wish to secure, by entering an "otpauth://" URL, or by manually inputting the necessary details.