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

Version 3.24.0

At Duo we care about your privacy. This update adds anonymous usage analytics that will help us understand how you use Duo Mobile. We utilize this analytics data to improve app reliability and to develop new features. This does not collect any personally identifiable information. You can opt out of this on the settings page at any time.

Ratings and Reviews

2.5 out of 5
177 Ratings
177 Ratings
1675S ,


Too much layered “authentication” that only prevents you from retrieving forgotten login information when you need it and often fails in sending a code to the app. Awful.

チャンドラゾイ ,

Completely unnecessary for a university

I shouldn’t need my phone to log into my account on a computer in class when I am not allowed to have my phone out in class or work in the first place. Makes it so difficult to log in without being glued to your phone or other devices.

Hugh-ja-buut ,

Not a fan

I honestly quit doing any online homework because of this. That seems extreme and I get it but if someone wants to hack my account to see my class schedule I could care less. I had to do it through the university I attended and it is just pointless. I can appreciate their efforts to boost security but is it really necessary?


Duo Security, Inc.
30.7 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German
Age Rating
Rated 4+
© Duo Security, Inc.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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