# Class Controller vs Mustr

The clearest difference is update cadence: Class Controller at every 9 days against Mustr's every 3 weeks. Class Controller also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Class Controller ships an update every 9 days, Mustr every 3 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Class Controller | Mustr |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 127 MB | 46 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Dash Safety LLC](https://appshunter.io/developer/1671035613) | [Dominic Iocco](https://appshunter.io/developer/599517957) |

## What reviewers say

### Class Controller

[App page](https://appshunter.io/ios/app/class-controller/id6747825858)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mustr

[App page](https://appshunter.io/ios/app/mustr-school-safety-comms/id6766087943)

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

**In-app purchases:** none


## Frequently asked questions

### Is Class Controller free?

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

### Is Mustr free?

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

### Do Class Controller or Mustr have ads?

Neither Class Controller nor Mustr shows ads.

### Which is updated more often, Class Controller or Mustr?

Class Controller ships an update every 9 days, and Mustr every 3 weeks. Most recently, Class Controller was updated on November 8, 2026 and Mustr 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.*