The Best Authenticator for iOS Users

The Best Authenticator for iOS Users


2 min read

Authenticator (by Matt Rubin)

is a two-factor authentication app that is simple, free, and open source.

Here are the reasons why you should consider using "Authenticator" over other two-factor authentication apps like Authy, Google Authenticator or Microsoft Authenticator:

1. Open Source Software

"Authenticator" is open-source software, which means that anyone can review and modify its source code. This helps to address concerns around privacy and security.

2. Native App

"Authenticator" is not a cross-platform app. This is an app made in Swift. Therefore, unlike other apps, it is light, fast and efficient.

For example, since Authy is made in 'electron'(this is my guess, I don't know exactly because it's not open source), the app is heavy and has unnecessary initial loading.

3. Secure Storage

"Authenticator" stores its data in the iOS keychain, which is encrypted and protects against rooting or jailbreaking.

4. Compatibility

"Authenticator" fully supports time-based and counter-based one-time passwords as standardized in RFC 4226 and 6238. This makes it compatible with all websites and services that support two-factor authentication just like Authy, Google Authenticator or Microsoft Authenticator.

5. Offline Usage

"Authenticator" works even when you're not connected to the internet. This allows you to securely access your accounts offline.

6. Easy Setup

"Authenticator" can be easily set up via QR code, "otpauth://" URL, or manual entry. This makes it easy for users to set up and use the app.

7. Ongoing Development

"Authenticator" is developed and continuously updated by Matt Rubin and contributors. This ensures that the app remains up to date in terms of security and functionality, providing users with a reliable service.


"Authenticator" offers a high level of security and privacy due to being open-source software. It also provides convenient features such as compatibility and offline usage. With easy setup and ongoing development by Matt Rubin, "Authenticator" is a solid choice for anyone looking for a two-factor authentication app.

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