# 451F vs 2FA Authenticator Verification

The clearest difference is in-app purchases: 451F at none against 2FA Authenticator Verification's 3. 451F also leads on device support (3 vs 1) and iOS requirement (11.0 vs 17.0). 2FA Authenticator Verification's advantage is update cadence (every 3 days vs every 11 months). On price and ads there is nothing between them.

Both are free to download. 2FA Authenticator Verification sells 3 in-app purchases, starting at $5.99 per 7 days. 451F asks for nothing beyond the download.

451F ships an update every 11 months, 2FA Authenticator Verification every 3 days. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 451F | 2FA Authenticator Verification |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 days** |
| Size | 26 MB | 8 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ACD Groupe](https://appshunter.io/developer/1033556694) | [Textile of three Ltd](https://appshunter.io/developer/1870807118) |

## What reviewers say

### 451F

[App page](https://appshunter.io/ios/app/451f/id1417217337)

**In-app purchases:** none


### 2FA Authenticator Verification

[App page](https://appshunter.io/ios/app/2fa-authenticator-verification/id6758090330)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator Premium | $5.99 | per 7 days |
| 2FA Authenticator Premium | $5.99 | per 7 days |
| 2FA Authenticator One-time | $119.99 | one-time |


## Frequently asked questions

### Is 451F free?

451F is free to download, with no in-app purchases.

### Is 2FA Authenticator Verification free?

2FA Authenticator Verification is free to download, with in-app purchases available.

### Do 451F or 2FA Authenticator Verification have ads?

Neither 451F nor 2FA Authenticator Verification shows ads.

### Which is updated more often, 451F or 2FA Authenticator Verification?

451F ships an update every 11 months, and 2FA Authenticator Verification every 3 days. Most recently, 451F was updated on September 17, 2026 and 2FA Authenticator Verification on September 13, 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.*