# Authenticator Duo vs Two Factor Authenticator & OTP

The clearest difference is rating: Two Factor Authenticator & OTP at 4.5 against Authenticator Duo's 3.9. Two Factor Authenticator & OTP also leads on ratings volume (133 vs 7). Authenticator Duo's advantage is update cadence (daily vs every 2 days). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Authenticator Duo sells 3 in-app purchases, starting at $6.99 per 7 days and Two Factor Authenticator & OTP sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Two Factor Authenticator & OTP holds the better App Store score, 4.5 against 3.9. That said, the two scores are not equally well evidenced: Two Factor Authenticator & OTP has 133 ratings behind it against 7, so its average is the more settled of the two.

Authenticator Duo ships an update daily, Two Factor Authenticator & OTP every 2 days. The most recent releases landed on September 11, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | Authenticator Duo | Two Factor Authenticator & OTP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6615062059/reviews) | **[4.5 (133 ratings)](https://appshunter.io/ios/app/two-factor-authenticator-and-otp/id6738425763/reviews)** |
| Number of ratings | 7 | **133** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 days |
| Monetization | Subscription | Subscription |
| Size | 16 MB | 26 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shawna Margie](https://appshunter.io/developer/1775558385) | [HENRY FOSTER](https://appshunter.io/developer/1851206362) |

## What reviewers say

### Authenticator Duo

[App page](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6615062059)

This app provides robust two-factor authentication to secure your online accounts. It offers easy setup, management, and backup/sync features using advanced security protocols for peace of mind.

**Highlights:** Two-Factor Authentication (2FA), Easy Setup & Management, Backup & Sync, Advanced Security Protocols, User-Friendly Interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro + 3 Days Trial | $6.99 | per 7 days |
| Monthly Pro | $19.99 | per month |
| Annual Pro | $49.99 | per year |


### Two Factor Authenticator & OTP

[App page](https://appshunter.io/ios/app/two-factor-authenticator-and-otp/id6738425763)

Enhance your online security with robust two-factor and multi-factor authentication. This app generates secure one-time passwords and supports multiple protocols, with features like backup, restore, and encrypted data storage for peace of mind.

**Highlights:** Two-Factor Authentication (2FA), Multi-Factor Authentication (MFA), TOTP and HOTP Support, Backup & Restore, User-Friendly Design, Encrypted Data Storage

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Free Trial PRO Access | $6.99 | per 7 days |
| Weekly PRO Access | $6.99 | per 7 days |


## Frequently asked questions

### Is Authenticator Duo free?

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

### Is Two Factor Authenticator & OTP free?

Two Factor Authenticator & OTP is free to download, with in-app purchases available.

### Which has better reviews, Authenticator Duo or Two Factor Authenticator & OTP?

Two Factor Authenticator & OTP is rated higher. Authenticator Duo averages 3.9 out of 5 from 7 ratings, while Two Factor Authenticator & OTP averages 4.5 from 133 ratings.

### Do Authenticator Duo or Two Factor Authenticator & OTP have ads?

Neither Authenticator Duo nor Two Factor Authenticator & OTP shows ads.

### Which is updated more often, Authenticator Duo or Two Factor Authenticator & OTP?

Authenticator Duo ships an update daily, and Two Factor Authenticator & OTP every 2 days. Most recently, Authenticator Duo was updated on September 11, 2026 and Two Factor Authenticator & OTP on August 26, 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.*