# ClassCheck vs LessonOS

The clearest difference is in-app purchases: ClassCheck at none against LessonOS's 2. ClassCheck also leads on iOS requirement (13.0 vs 17.0). LessonOS's advantage is update cadence (every 2 days vs weekly). On price, ads and device support there is nothing between them.

Both are free to download. LessonOS sells 2 one-off in-app purchases. ClassCheck asks for nothing beyond the download.

ClassCheck ships an update weekly, LessonOS every 2 days. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | ClassCheck | LessonOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Size | 31 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Agena Bilisim ve Savunma Teknolojileri Anonim Sirketi](https://appshunter.io/developer/1666476970) | [Chumphon Jan Toolseram](https://appshunter.io/developer/1891557073) |

## What reviewers say

### ClassCheck

[App page](https://appshunter.io/ios/app/classcheck-attendance-tracker/id6757188335)

**In-app purchases:** none


### LessonOS

[App page](https://appshunter.io/ios/app/lessonos-class-attendance/id6761799063)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $14.99 | one-time |
| Business Unlock | $29.99 | one-time |


## Frequently asked questions

### Is ClassCheck free?

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

### Is LessonOS free?

LessonOS is free to download, with in-app purchases available.

### Do ClassCheck or LessonOS have ads?

Neither ClassCheck nor LessonOS shows ads.

### Which is updated more often, ClassCheck or LessonOS?

ClassCheck ships an update weekly, and LessonOS every 2 days. Most recently, ClassCheck was updated on October 9, 2026 and LessonOS on October 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.*