# CM vs TR Attendance

The clearest difference is update cadence: CM at every 3 weeks against TR Attendance's every 7 months. TR Attendance's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

CM ships an update every 3 weeks, TR Attendance every 7 months. The most recent releases landed on October 27, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | CM | TR Attendance |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Size | 59 MB | 27 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Sahan Nagodavithana](https://appshunter.io/developer/1498574847) | [Dunamis LLC](https://appshunter.io/developer/653334835) |

## What reviewers say

### CM

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

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

**In-app purchases:** none


### TR Attendance

[App page](https://appshunter.io/ios/app/tr-attendance/id6746633891)

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

**In-app purchases:** none


## Frequently asked questions

### Is CM free?

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

### Is TR Attendance free?

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

### Do CM or TR Attendance have ads?

Neither CM nor TR Attendance shows ads.

### Which is updated more often, CM or TR Attendance?

CM ships an update every 3 weeks, and TR Attendance every 7 months. Most recently, CM was updated on October 27, 2026 and TR Attendance 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.*