# Two factor authenticator vs Authenticator OTP 6

The clearest difference is ads: Authenticator OTP 6 at none against Two factor authenticator's shown. Authenticator OTP 6 also leads on update cadence (every 5 days vs monthly). Two factor authenticator's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Two factor authenticator sells 3 in-app purchases, starting at $1.99 per 7 days and Authenticator OTP 6 sells 1 in-app purchase, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Two factor authenticator ships an update monthly, Authenticator OTP 6 every 5 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Two factor authenticator | Authenticator OTP 6 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 5 days** |
| Size | 45 MB | 2 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [nguyen thanh](https://appshunter.io/developer/1481436893) | [Marika Kellner](https://appshunter.io/developer/6773824995) |

## What reviewers say

### Two factor authenticator

[App page](https://appshunter.io/ios/app/two-factor-authenticator/id6742745017)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week Premium | $1.99 | per 7 days |
| One Month Premium | $4.99 | per month |
| 1 Year Premium | $19.99 | per year |


### Authenticator OTP 6

[App page](https://appshunter.io/ios/app/authenticator-otp-6-digit-auth/id6780059732)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| authenticator subscription | $6.99 | per 7 days |


## Frequently asked questions

### Is Two factor authenticator free?

Two factor authenticator is free to download, with in-app purchases available.

### Is Authenticator OTP 6 free?

Authenticator OTP 6 is free to download, with in-app purchases available.

### Do Two factor authenticator or Authenticator OTP 6 have ads?

Two factor authenticator shows ads; Authenticator OTP 6 does not.

### Which is updated more often, Two factor authenticator or Authenticator OTP 6?

Two factor authenticator ships an update monthly, and Authenticator OTP 6 every 5 days. Most recently, Two factor authenticator was updated on October 30, 2026 and Authenticator OTP 6 on November 5, 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.*