# CM vs BS Plus

The clearest difference is device support: BS Plus at 3 against CM's 1. BS Plus also leads on iOS requirement (13.0 vs 16.6). On price, 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.

## The numbers

| Metric | CM | BS Plus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 58 MB | 32 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Sahan Nagodavithana](https://appshunter.io/developer/1498574847) | [Eleetra (Private) Limited](https://appshunter.io/developer/1759136235) |

## What reviewers say

### CM

[App page](https://appshunter.io/ios/app/cm-teacher/id1635924044)

**Features:** macOS Compatibility

**In-app purchases:** none


### BS Plus

[App page](https://appshunter.io/ios/app/bs-plus/id6754469696)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CM free?

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

### Is BS Plus free?

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

### Do CM or BS Plus have ads?

Neither CM nor BS Plus shows ads.

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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.*