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 3.32.0

- Added a new feature to allow troubleshooting of push notification issues. It can be found in the account details screen by clicking “Edit” then selecting a Duo-protected account.
- Miscellaneous bug fixes and improvements

Ratings and Reviews

3.9 out of 5
9 Ratings

9 Ratings

Nihil Raj ,

Touch ID authentication feature not enabled.

Duo has released version 3.7 as per their website but solution is still not available in App Store.

RullaAlizzi ,


Im not able to login to my instagram because of this security application . It keeps saying that the passcode that im putting has errors

Developer Response ,

Hi RullaAlizzi, I'm sorry to hear that you lost access to your Instagram account. Do you have your recovery codes ( that Instagram provided when you first set up two-factor authentication for your account? Alternatively, did you previously enable Duo Restore for Third-Party Accounts by setting a recovery passcode for Instagram? ( If not, you will have to contact Instagram directly for their assistance in regaining access to your account there. Please see this article for more info on why this commonly occurs and how to resolve it:


Duo Security, Inc.
27.8 MB

Requires iOS 11.0 and watchOS 2.0 or later. Compatible with iPhone, iPad and iPod touch.


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Age Rating


  • Family Sharing

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

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