# Authenticator・2FA・MFA・OTP vs Authenticator Duo

The clearest difference is update cadence: Authenticator Duo at every 2 days against Authenticator・2FA・MFA・OTP's every 2 months. Authenticator Duo also leads on rating (5.0 vs 4.6) and iOS requirement (15.0 vs 17.0). Authenticator・2FA・MFA・OTP's advantage is ratings volume (80 vs 14). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Authenticator・2FA・MFA・OTP sells 12 in-app purchases, starting at $4.99 per 7 days and Authenticator Duo sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Authenticator Duo holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Authenticator・2FA・MFA・OTP has 80 ratings behind it against 14, so its average is the more settled of the two.

Authenticator・2FA・MFA・OTP ships an update every 2 months, Authenticator Duo every 2 days. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Authenticator・2FA・MFA・OTP | Authenticator Duo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (80 ratings)](https://appshunter.io/ios/app/authenticator2famfaotp/id6473175732/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6504300892/reviews)** |
| Number of ratings | **80** | 14 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Subscription | Subscription |
| Size | 73 MB | 20 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Audio Labs](https://appshunter.io/developer/6791650973) | [Quentin Powell](https://appshunter.io/developer/1751779133) |

## What reviewers say

### Authenticator・2FA・MFA・OTP

[App page](https://appshunter.io/ios/app/authenticator2famfaotp/id6473175732)

Secure your online accounts with two-factor authentication. This app generates time-based one-time passcodes for an extra layer of security beyond your password. It offers fast setup via QR codes or manual entry and cross-platform syncing.

**Highlights:** Two-factor authentication (2FA), Time-based one-time passcodes (TOTP), QR code scanning for setup, Manual key entry, Cross-platform backup and sync

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator: Access Protection | $4.99 | per 7 days |
| 2FA Authy Authenticator, MFA | $5.99 | per 7 days |
| Security: Authenticator, Authy | $5.99 | per 7 days |
| Security: Authenticator, Authy | $7.99 | per 7 days |
| Security Authenticator: MFA | $11.99 | per 7 days |
| Security: Digital Authenticator | $19.99 | per month |
| 2FA Authy Authenticator, MFA | $19.99 | per month |
| Authenticator: Access Protection | $29.99 | per month |
| Security: Authenticator App | $39.99 | per year |
| Security Authenticator: MFA | $49.99 | per year |
| 2FA | $9.99 | one-time |
| Authenticator | $9.99 | one-time |


### Authenticator Duo

[App page](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6504300892)

Secure your online accounts with this app that generates and stores two-factor authentication codes. It offers end-to-end encryption, Face ID/Touch ID access, and encrypted iCloud backups for easy restoration across devices. Operate securely offline and import existing tokens.

**Highlights:** Generate and store 2FA/MFA tokens, Scan QR codes or manually input codes, End-to-end encryption for all codes, Face ID & Touch ID access, Encrypted iCloud backups, Offline operation, Import existing tokens

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription with trial | $6.99 | per 7 days |
| Weekly subscription | $6.99 | per 7 days |


## Frequently asked questions

### Is Authenticator・2FA・MFA・OTP free?

Authenticator・2FA・MFA・OTP is free to download, with in-app purchases available.

### Is Authenticator Duo free?

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

### Which has better reviews, Authenticator・2FA・MFA・OTP or Authenticator Duo?

Authenticator Duo is rated higher. Authenticator・2FA・MFA・OTP averages 4.6 out of 5 from 80 ratings, while Authenticator Duo averages 5.0 from 14 ratings.

### Do Authenticator・2FA・MFA・OTP or Authenticator Duo have ads?

Neither Authenticator・2FA・MFA・OTP nor Authenticator Duo shows ads.

### Which is updated more often, Authenticator・2FA・MFA・OTP or Authenticator Duo?

Authenticator・2FA・MFA・OTP ships an update every 2 months, and Authenticator Duo every 2 days. Most recently, Authenticator・2FA・MFA・OTP was updated on September 18, 2026 and Authenticator Duo on June 1, 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.*