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Duo Mobile

By Duo Security

This app is only available on the App Store for iOS devices.


Duo Mobile works with Duo Security's two-factor authentication service to make logins more secure. The application generates passcodes for login and can receive push notifications for easy, one-tap authentication on your iPhone, iPad, or Apple Watch.

Additionally, you can use Duo Mobile to manage two-factor authentication for other application and web services that make use of passcodes.

Note: For Duo accounts, Duo Mobile needs to be activated and linked to your account before it will work. You will receive an activation link as part of Duo's enrollment process. You may add third-party accounts at any time.

License agreements for third-party Open Source libraries used in Duo Mobile can be found at

What's New in Version 3.19.1

- Fixed issue where Security Checkup would report screen-lock failing on an iPhone X with Face ID enabled
- Optimized for iPhone X
- Support for Face ID

We never prompt you for a review in-app, but if you are feeling generous, we always love hearing from our users.


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Customer Reviews

What happened?

After the latest IOS update, I no longer get any notifications on my iWatch from Duo. That was one of the most convenient things about the watch. At work, I could store my phone away in a locked drawer and still use Duo on the watch for the required two-factor authorizations to log into my work account.

UPDATE: The latest IOS update earlier this week fixed the problem. I can love the app again. And the developer responded quickly with some advice (which I had already tried, but they didn’t know that). Impressed!

User friendly!

Duo has done a great job making their app easy to use and I love using their push notification to authenticate into work. Very forward thinking company. Thank you for making my life easy!

Watch application doesn’t work most of the time

90% of the time the watch app just says that it couldn’t generate a passcode and asks to open the phone app and try again, which never helps. Considering that these codes don’t need network access and should be trivial to generate on the watch itself, I’d recommend another app.

Duo Mobile
View in iTunes
This app is designed for both iPhone and iPad
Offers Apple Watch App for iPhone
  • Free
  • Category: Business
  • Updated:
  • Version: 3.19.1
  • Size: 26.7 MB
  • Apple Watch: Yes
  • Languages: English, French, German
  • Seller:

Compatibility: Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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