# Duo Mobile — Security made simple

> Two-factor authentication app for secure logins and account management. (iPhone/iPad app by Duo Security LLC.)

- Source: https://appshunter.io/ios/app/duo-mobile/id422663827 (this page in markdown: same URL + `.md`)
- Developer: [Duo Security LLC](https://appshunter.io/developer/413163561)
- Category: Business, Utilities
- Price: Free
- Rating: 4.90/5 from 2,248,614 App Store ratings · 1,865 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 46 MB
- Languages: Hindi, Vietnamese, American English, Dutch, Danish, Indonesian, European Spanish, Italian, Catalan, Korean and 13 more
- Released: 2011-04-06
- Data updated: 2026-08-30
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/duo-mobile/id422663827/reviews.md

## What is Duo Mobile?

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 https://www.duosecurity.com/legal/open-source-licenses.

## Key features

- Two-factor authentication
- Passcode generation
- Push notification authentication
- One-tap login
- Manage multiple accounts

## Chart rankings

- #19 in Top Free · Business (US App Store)

## What do users think of Duo Mobile?

Overall sentiment: neutral

**Pros**

- 👍 Simple and easy to use
- 🔒 Provides an extra layer of security
- 🚀 Quick and convenient authentication
- 🔒 Secure login experience
- 👍 Straightforward and user-friendly
- 👍 Easy to set up and use

**Cons**

- 🐛 Unreliable notifications and push functionality
- 🐛 Compatibility issues when changing devices
- 🐛 Slow and frustrating authentication process
- 🐛 Confusing and non-intuitive user interface
- 🐛 Forced use of the app causing inconvenience
- 🐛 Inability to remove or deactivate the app

**Commonly reported bugs**

- Notifications not working as expected
- App not recognizing new devices after replacement
- Authentication process getting stuck or timing out
- Inability to recover accounts after device changes
- Unexpected language changes in the app

**Most requested features**

- Allow more control and customization for users
- Improve integration with other authentication methods
- Provide better support and guidance for new users
- Add an option to remember trusted devices
- Streamline the authentication flow for faster access

## Recent user reviews (10 of 1,865)

All indexed reviews: https://appshunter.io/ios/app/duo-mobile/id422663827/reviews.md

### 5/5 — 5 stars

*2026-08-24, version 4.119.0*

Very useful and helpful

### 5/5 — Easy Peasy

*2026-08-23, version 4.119.0*

Very User Friendly, instant, and straight forward.

### 5/5 — Bonne alternative aux outils de Google etc.

*2026-08-23*

Je l’utilise depuis des années, aucun soucis.

### 5/5 — Works well

*2026-08-22, version 4.119.0*

Never had a single issue over two years and row organisations . For a 2fa app, nothing going wrong is the highest praise

### 5/5 — Easy to use

*2026-08-22, version 4.119.0*

Love DUO

### 5/5 — Yay

*2026-08-22, version 4.119.0*

Yay

### 5/5 — Reseña

*2026-08-21, version 4.119.0*

Muy bueno funciona muy bien

### 5/5 — M

*2026-08-21, version 4.119.0*

I b

### 5/5 — Awesome!

*2026-08-21, version 4.119.0*

Works flawlessly

### 5/5 — Connexion fluide

*2026-08-21*

Les étapes de connexion sont faciles à mettre en oeuvre et on obtient un accès rapide au site associé au mode d’authentificatio

## Frequently asked questions about Duo Mobile

### What does Duo Mobile do?

Duo Mobile enhances login security by providing two-factor authentication. It generates passcodes and allows for one-tap authentication via push notifications to secure your accounts.

### How does Duo Mobile work?

The application works with Duo Security's service to offer secure logins. You can generate passcodes directly within the app or approve login requests with a simple tap on a push notification.

### Is Duo Mobile free to use?

Based on the provided information, the application is free to use. There are no mentions of subscription fees or in-app purchases for its core functionality.

### What devices is Duo Mobile compatible with?

Duo Mobile is compatible with iPhone, iPad, and Apple Watch devices, allowing for flexible and convenient authentication across your Apple ecosystem.

### Can I use Duo Mobile for more than one account?

Yes, Duo Mobile allows you to manage two-factor authentication for multiple applications and web services. You can add third-party accounts at any time to secure them.

## Version history (last 5 releases)

### 4.120.0 — 2026-08-25

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.

### 4.119.0 — 2026-08-10

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.

### 4.117.1 — 2026-07-29

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.

### 4.117.0 — 2026-07-17

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.

### 4.116.0 — 2026-06-29

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.

## Apps similar to Duo Mobile

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| [Google Chat](https://appshunter.io/ios/app/google-chat/id1163852619) | 4.6 (305,037) | Free | Business |
| [Authenticator App - Duo Secure](https://appshunter.io/ios/app/authenticator-app-duo-secure/id6470662300) | 4.5 (24) | Free | Business |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*