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 4.7.0

We're always working to improve user experience in Duo Mobile. This update introduces various behind-the-scenes improvements and minor bug fixes to enhance your authentication experience.

Ratings and Reviews

2.3 out of 5
244 Ratings

244 Ratings

Маруся Буханкина ,

Why change the major button?

Whoever decided to exchange two MAIN buttons in the app with a new update is an idiot. YES was always on the left, NO was always on the right, when you were approving a request. Now it’s switched, and I always click on the left, it’s a subconscious thing I do because I’m used to doing it all the time. Now I end up clicking NO every time. And have to send a request all over again. Wasting my time because of some idiot developers.

Like, WHY? Why change their spots?

Filthy Yoghurt ,

Do not move to a new phone

The procedure of migrating to anew device is not clear and obtuse. Great idea for security but this needs a serious rethink for migration to new devices

Update for the developer;
To your point for a suggestion. The section where you have a radio button to turn on recovery with a new device with the password which you set. That doesn’t work. The instructions state that you need to perform a iCloud restore for this feature to work. If you have performed an iCloud restore but only activated this afterwards, then you need to perform a factory reset of your device and then restore again. If this is the case (though not documented) then this is not a satisfactory system. This would assume that duo is the primary function of the device and is the main concern of the user. So the suggestion; why not have a button ‘move duo to this device’, you are then prompted for the password and there you go.

Developer Response ,

Hi Filthy Yoghurt, thank you for taking the time to share your feedback with us. I will be happy to pass your comments along to our development team. If you have more specific suggestions of what you found difficult about the recovery process, feel free to send them our way.

the_marco_ ,

Bug with account recovery feature

I've been using Duo without problems for years including the feature to restore third party accounts.
It has been a few weeks which, very often, Duo keeps asking me to enable and set a password for enable restoring the accounts. Even multiple times on the same day. I always put there the same password and re-enable... However there's definitely something wrong and wanted to report the issue. Restoring my accounts is an important feature which I hope will work fine when I'll needed.

App Privacy

The developer, Duo Security LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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