# LessonOS vs Institum

The clearest difference is in-app purchases: Institum at none against LessonOS's 2. LessonOS's advantage is update cadence (every 2 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

LessonOS ships an update every 2 days, Institum every 3 weeks. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | LessonOS | Institum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Size | 6 MB | 49 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chumphon Jan Toolseram](https://appshunter.io/developer/1891557073) | [Khalil Berakdar](https://appshunter.io/developer/6781389958) |

## What reviewers say

### 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 |


### Institum

[App page](https://appshunter.io/ios/app/institum/id6781389956)

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

**In-app purchases:** none


## Frequently asked questions

### Is LessonOS free?

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

### Is Institum free?

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

### Do LessonOS or Institum have ads?

Neither LessonOS nor Institum shows ads.

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

LessonOS ships an update every 2 days, and Institum every 3 weeks. Most recently, LessonOS was updated on October 5, 2026 and Institum on October 9, 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.*