# ITRun mOTP vs Authenticator for RBLX

The clearest difference is in-app purchases: ITRun mOTP at none against Authenticator for RBLX's 5. Authenticator for RBLX's advantage is update cadence (every 4 months vs every 29 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Authenticator for RBLX sells 5 in-app purchases, starting at $4.99 per 7 days. ITRun mOTP asks for nothing beyond the download.

ITRun mOTP ships an update every 29 months, Authenticator for RBLX every 4 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ITRun mOTP | Authenticator for RBLX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 4 months** |
| Size | 6 MB | 92 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ITRun](https://appshunter.io/developer/1603103415) | [FOSTER DEV LIMITED](https://appshunter.io/developer/1842121203) |

## What reviewers say

### ITRun mOTP

[App page](https://appshunter.io/ios/app/itrun-motp/id1603103413)

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

**In-app purchases:** none


### Authenticator for RBLX

[App page](https://appshunter.io/ios/app/authenticator-for-rblx/id6753009658)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly-Trial | $4.99 | per 7 days |
| Monthly | $12.99 | per month |
| Yearly | $39.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is ITRun mOTP free?

ITRun mOTP is free to download, with no in-app purchases.

### Is Authenticator for RBLX free?

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

### Do ITRun mOTP or Authenticator for RBLX have ads?

Neither ITRun mOTP nor Authenticator for RBLX shows ads.

### Which is updated more often, ITRun mOTP or Authenticator for RBLX?

ITRun mOTP ships an update every 29 months, and Authenticator for RBLX every 4 months. Most recently, ITRun mOTP was updated on October 30, 2026 and Authenticator for RBLX on October 24, 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.*