# Duo Authenticator vs Authenticator App

The clearest difference is update cadence: Authenticator App at every 9 days against Duo Authenticator's monthly. Authenticator App also leads on ratings volume (547 vs 24) and rating (4.4 vs 4.2). Duo Authenticator's advantage is review sentiment (50% vs 38%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Duo Authenticator sells 3 in-app purchases, starting at $3.99 per 7 days and Authenticator App sells 5 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Authenticator App holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: Authenticator App has 547 ratings behind it against 24, so its average is the more settled of the two. Written reviews complicate that: 50% of Duo Authenticator's written reviews are positive against 38% of Authenticator App's, so the app with the better star average is not the one people write more warmly about.

Duo Authenticator ships an update monthly, Authenticator App every 9 days. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Duo Authenticator | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (24 ratings)](https://appshunter.io/ios/app/duo-authenticator/id1665454984/reviews) | **[4.4 (547 ratings)](https://appshunter.io/ios/app/authenticator-app-2fa/id1665498541/reviews)** |
| Number of ratings | 24 | **547** |
| Positive reviews | **50.0% of reviews** | 38.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 60 MB | 231 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Petr Polasek](https://appshunter.io/developer/1613323784) | [Fire Technologies Hong Kong Limited](https://appshunter.io/developer/1871390749) |

## What reviewers say

### Duo Authenticator

[App page](https://appshunter.io/ios/app/duo-authenticator/id1665454984)

Enhance your online security with this multi-factor authentication app. It provides an extra layer of protection for your accounts by generating time-sensitive codes, even when offline. Secure your sensitive information with ease and peace of mind.

**Highlights:** Quick and easy setup, Wide service compatibility, Time-sensitive security codes, Offline code generation, End-to-end encryption, Security code protection

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Week | $3.99 | per 7 days |
| Premium 1 Month | $9.99 | per month |
| Premium 1 Year | $29.99 | per year |


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa/id1665498541)

This app generates secure two-factor authentication codes for your online accounts. It adds an extra layer of security to prevent unauthorized access and offers cloud backup for your authentication keys. Easily add accounts by scanning QR codes or manual entry.

**Highlights:** Secure accounts with 2FA, Generate time-based one-time passwords (TOTP), Encrypted cloud backup and sync, Offline code generation, Add accounts via QR code or manual entry, Cross-device synchronization (Premium)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Full Version 3D TRIAL | $6.99 | per 7 days |
| Weekly Full Version | $6.99 | per 7 days |
| Monthly Full Version | $24.99 | per month |
| Annual Subscription With Trial | $49.99 | per year |
| Annual Subscription | $59.99 | per year |

**What reviewers like**

- 🔒 Strong security and protection features
- ✅ Effective 2FA functionality
- 👍 Simple and straightforward to use

**What reviewers complain about**

- 💰 Deceptive pricing model - advertised as free but charges subscription
- 💳 Aggressive upselling of premium/pro version
- ⚠️ Lack of transparency about costs
- 📞 Poor customer support and unresponsive developers
- 🔐 Suspicious data harvesting and privacy concerns

**Reported bugs**

- App stops working after initial setup period
- Users locked out of accounts
- Repeated unauthorized subscription charges
- App fails to function despite payment

**Requested features**

- Clear pricing disclosure upfront
- Better customer support channels
- Option to use app without premium subscription


## Frequently asked questions

### Is Duo Authenticator free?

Duo Authenticator is free to download, with in-app purchases available.

### Is Authenticator App free?

Authenticator App is free to download, with in-app purchases available.

### Which has better reviews, Duo Authenticator or Authenticator App?

Authenticator App is rated higher. Duo Authenticator averages 4.2 out of 5 from 24 ratings, while Authenticator App averages 4.4 from 547 ratings.

### Do Duo Authenticator or Authenticator App have ads?

Both Duo Authenticator and Authenticator App show ads.

### Which is updated more often, Duo Authenticator or Authenticator App?

Duo Authenticator ships an update monthly, and Authenticator App every 9 days. Most recently, Duo Authenticator was updated on October 9, 2026 and Authenticator App on October 14, 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.*