# Duo Mobile vs Oracle Mobile Authenticator

The clearest difference is review sentiment: Duo Mobile at 68% against Oracle Mobile Authenticator's 14%. Duo Mobile also leads on rating (4.9 vs 2.6) and update cadence (fortnightly vs every 3 months). Oracle Mobile Authenticator's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Duo Mobile holds the better App Store score, 4.9 against 2.6. That said, the two scores are not equally well evidenced: Duo Mobile has 2.3M ratings behind it against 90, so its average is the more settled of the two. Written reviews point the same way: 68% of Duo Mobile's written reviews are positive against 14% of Oracle Mobile Authenticator's.

Duo Mobile ships an update fortnightly, Oracle Mobile Authenticator every 3 months. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Duo Mobile | Oracle Mobile Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (2.3M ratings)](https://appshunter.io/ios/app/duo-mobile/id422663827/reviews)** | [2.6 (90 ratings)](https://appshunter.io/ios/app/oracle-mobile-authenticator/id835904829/reviews) |
| Number of ratings | **2.3M** | 90 |
| Positive reviews | **68.2% of reviews** | 14.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free | Free |
| Best chart rank | **#20** | — |
| Size | 46 MB | 4 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duo Security LLC](https://appshunter.io/developer/413163561) | [Oracle America, Inc.](https://appshunter.io/developer/284793707) |

## What reviewers say

### Duo Mobile

[App page](https://appshunter.io/ios/app/duo-mobile/id422663827)

**Currently charting:** #20 Top Free · Business (US App Store)

Enhance login security with two-factor authentication. Generate passcodes or use one-tap push notifications for seamless access to your accounts. Manage authentication for multiple applications and web services.

**Highlights:** Two-factor authentication, Passcode generation, Push notification authentication, One-tap login, Manage multiple accounts

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

- 🐛 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

**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

**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


### Oracle Mobile Authenticator

[App page](https://appshunter.io/ios/app/oracle-mobile-authenticator/id835904829)

Securely verify your identity with your mobile device. This app generates one-time passcodes for logins or sends push notifications for approval, adding a vital layer of security to online applications beyond standard username and password.

**Highlights:** Generate one-time passwords offline, Push notification approval, App protection with Touch ID or PIN, Setup via QR code, URL, or manual key, Support for multiple accounts, Generate OTP for other RFC 6238 compliant apps

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Duo Mobile free?

Duo Mobile is free to download, with no in-app purchases.

### Is Oracle Mobile Authenticator free?

Oracle Mobile Authenticator is free to download, with no in-app purchases.

### Which has better reviews, Duo Mobile or Oracle Mobile Authenticator?

Duo Mobile is rated higher. Duo Mobile averages 4.9 out of 5 from 2.3M ratings, while Oracle Mobile Authenticator averages 2.6 from 90 ratings.

### Do Duo Mobile or Oracle Mobile Authenticator have ads?

Neither Duo Mobile nor Oracle Mobile Authenticator shows ads.

### Which is updated more often, Duo Mobile or Oracle Mobile Authenticator?

Duo Mobile ships an update fortnightly, and Oracle Mobile Authenticator every 3 months. Most recently, Duo Mobile was updated on September 25, 2026 and Oracle Mobile Authenticator on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*