# OTAC auth vs BxPMaster

The clearest difference is iOS requirement: BxPMaster at 12.0 against OTAC auth's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OTAC auth ships an update every 6 weeks, BxPMaster monthly. Both last shipped on November 8, 2026.

## The numbers

| Metric | OTAC auth | BxPMaster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Size | 10 MB | 52 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [swIDch Limited](https://appshunter.io/developer/1723421198) | [Hangzhou Sciener Smart Technology](https://appshunter.io/developer/1360996795) |

## What reviewers say

### OTAC auth

[App page](https://appshunter.io/ios/app/otac-auth/id6475137518)

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

**In-app purchases:** none


### BxPMaster

[App page](https://appshunter.io/ios/app/bxpmaster/id6478904961)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTAC auth free?

OTAC auth is free to download, with no in-app purchases.

### Is BxPMaster free?

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

### Do OTAC auth or BxPMaster have ads?

Neither OTAC auth nor BxPMaster shows ads.

### Which is updated more often, OTAC auth or BxPMaster?

OTAC auth ships an update every 6 weeks, and BxPMaster monthly. Most recently, OTAC auth was updated on November 8, 2026 and BxPMaster on November 8, 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.*