# Prof vs Le p'tit observatoire

The clearest difference is update cadence: Prof at every 3 weeks against Le p'tit observatoire's every 4 months. Le p'tit observatoire's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Prof ships an update every 3 weeks, Le p'tit observatoire every 4 months. The most recent releases landed on September 10, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Prof | Le p'tit observatoire |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 832 MB | 67 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin TATI](https://appshunter.io/developer/1583386758) | [Le p'tit observatoire](https://appshunter.io/developer/1689117859) |

## What reviewers say

### Prof

[App page](https://appshunter.io/ios/app/prof-elem/id6448314455)

**Features:** macOS Compatibility

**In-app purchases:** none


### Le p'tit observatoire

[App page](https://appshunter.io/ios/app/le-ptit-observatoire/id6449441581)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prof free?

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

### Is Le p'tit observatoire free?

Le p'tit observatoire is free to download, with no in-app purchases.

### Do Prof or Le p'tit observatoire have ads?

Neither Prof nor Le p'tit observatoire shows ads.

### Which is updated more often, Prof or Le p'tit observatoire?

Prof ships an update every 3 weeks, and Le p'tit observatoire every 4 months. Most recently, Prof was updated on September 10, 2026 and Le p'tit observatoire on September 7, 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.*