Duo Mobile

Cisco Systems, Inc.

4.3

86.1K reviews

Everyone

50M+

Downloads

Everyone

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About this app

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.

Additionally, you can use Duo Mobile to manage two-factor authentication for other application and web services that make use of passcodes.

Duo Mobile also has a companion app for Wear OS, Duo Wear, making secure authentication even more convenient on your smartwatch.

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.

Additionally, we will request access to use your camera for the sole purpose of scanning QR codes when activating accounts. Accounts can be activated by other methods if you choose not to do so.

License agreements for third-party Open Source libraries used in Duo Mobile can be found at https://www.duosecurity.com/legal/open-source-licenses.

For the latest Terms and Conditions see https://duo.com/legal/terms.

Updated on

Apr 20, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.

No data shared with third parties

Learn more about how developers declare sharing

This app may collect these data types

App activity, App info and performance, and Device or other IDs

Data is encrypted in transit

Data can’t be deleted

Ratings and reviews

4.3

84.5K reviews

Ross Troha

April 7, 2026

One less star because of a minor usability thing which would make life easier for those us who need to type in codes into the app. The keyboard does not open up to the numpad or keyboard + number row at the top when clicking on Enter Code from a notification. Instead it opens to the default keyboard without the numbers requiring Pressing+Holding or manually switching to the keypad. Otherwise, it works well. I don't have issues receiving the appropriate notifications, either.

2 people found this review helpful

A Google user

November 5, 2019

Very annoying app. The worst part is that the push notifications just don't work. I have to manually open the app to see the request and approve it. Then, a few minutes later, the push for the original request will finally show up in my notifications, by which point it's useless and I don't need it anymore. Also, I emailed the support email for the app store to mention my issue and all they said to me was that the email support was for paying DUO users. Why put that email for the free app?!

108 people found this review helpful

Cisco Systems, Inc.

November 6, 2019

Hi there, what type of account are you protecting with Duo? Please give the suggestions in this article a try (https://help.duo.com/s/article/2050) and let us know if that helps! Email support is provided for all Duo users, including those on the free edition, but you must be a Duo administrator. Learn more here: https://help.duo.com/s/article/1441

Kierra McCullough

March 27, 2021

Fails to send push notifications the vast majority of the time. When it does, they frequently disappear after clicking "approve" without actually approving the login. Also, there's zero reason to require two button presses to approve a login. It seems like a minor detail, but when you have to use this every single day, the pointless redundancy becomes incredibly frustrating. The user experience with this app is horrendous.

239 people found this review helpful

Cisco Systems, Inc.

March 31, 2021

Hi Kierra, thanks for sharing that feedback with us. I'm sorry to hear you're having those issues. We'll look into the issue with the Push notifications on our end.

What’s new

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.

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Everyone

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