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 3.43.0

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

2.5 out of 5
44 Ratings

44 Ratings

tommytnfk11 ,

Upload other icons

Need the feature to upload our own icons for the authentication.
The digits should also look bigger

Ddstco ,

No search, can’t upload own icons,

No search !!!
If you have dozens of accounts to manage like I do it’s hard to quickly find the one your looking for you. You’ll be scrolling forever.

Can’t upload custom icons !!!
The default list of icons is very limited, which would be fine if you could upload your own icons. But you can’t! This would make the app a lot easier to use as a visual icon is quicker to recognise than text.

The good things are:
+Codes are hidden until you tap on them
+Dark mode supported
+Attractive, minimalist design

However, search for accounts is needed. Custom icons are needed. Better multi-device sync/support is needed. Duo Restore needs to be improved. Show us our codes are backed up so we can have peace of mind if our phone is broken/stolen we won’t be locked out of hundreds of accounts.

Jamie Jackson Reed ,

No customer service

This company is really disgusting and I do not recommend going with them as your security authentication.
They refused to help me gain access to my accounts and said I need to contact my third party companies which were uncontactable.

Do not go with them.

Developer Response ,

Hi Jamie, I'm sorry to hear that you are having this trouble and are unable to reach your third-party account providers. The reason we ask that you contact them is because they are the only ones who can regain access to your accounts. Duo does not have access to your individual accounts or their credentials, so we are unable to help in this case, as much as we would like to! If you have the recovery codes for your accounts, you can use these to regain access as well. Sites such as Instagram and Facebook have a form to report your account when you are locked out. I advise filling one of those out if you have not done so already.


Duo Security, Inc.
30.9 MB

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


English, French, German

Age Rating


  • Family Sharing

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

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