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 4.4.1

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

2.9 out of 5
134 Ratings

134 Ratings

A_n_n_.y ,

Help me

I deleted the accounts from duo app and deleted it thinking i won’t need it anymore on instagram and now i can’t log in into two of my accounts,is there any way to remove the two factor authentication from my those accounts? Please help me in removing it :(

Aryan Sk ,

Individual Accounts

Please try to make accounts on this app so that there is no problem when shifting to other phones and it is really difficult to back up and transferring to new phones.

sangeet003 ,

Bad UX

The Allow button was earlier on left, now it’s moved to right.

For people using it since long they’re used to tapping on left, and suddenly left side is Deny!

Moreover why do I even have to get into the app to choose Allow / Deny, just provide a quick action in notifications to choose the application takes time to open and load..

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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