# MaestrOS vs Lesson Diary

The clearest difference is in-app purchases: MaestrOS at none against Lesson Diary's 1. MaestrOS also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Lesson Diary sells 1 one-off in-app purchase. MaestrOS asks for nothing beyond the download.

## The numbers

| Metric | MaestrOS | Lesson Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Daily |
| Size | 3 MB | 29 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fulvio Zangirolami](https://appshunter.io/developer/6788061897) | [SnowdropSoft](https://appshunter.io/developer/1541796403) |

## What reviewers say

### MaestrOS

[App page](https://appshunter.io/ios/app/maestros/id6788681937)

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

**In-app purchases:** none


### Lesson Diary

[App page](https://appshunter.io/ios/app/lesson-diary-progress-notes/id6810970794)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is MaestrOS free?

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

### Is Lesson Diary free?

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

### Do MaestrOS or Lesson Diary have ads?

Lesson Diary shows ads; MaestrOS does not.

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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.*