# PSO vs École Cathédrale

The clearest difference is ads: École Cathédrale at none against PSO's shown. École Cathédrale also leads on update cadence (every 6 days vs every 15 months). On price, in-app purchases, device support 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.

PSO ships an update every 15 months, École Cathédrale every 6 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PSO | École Cathédrale |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 15 months | **Every 6 days** |
| Size | 43 MB | 231 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Staatlich anerkannte Physiotherapie-Schule Ortenau gGmbH](https://appshunter.io/developer/1045949845) | [Apotre](https://appshunter.io/developer/1419988153) |

## What reviewers say

### PSO

[App page](https://appshunter.io/ios/app/pso/id1045949846)

**Features:** macOS Compatibility

**In-app purchases:** none


### École Cathédrale

[App page](https://appshunter.io/ios/app/ecole-cathedrale/id6758726996)

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

**In-app purchases:** none


## Frequently asked questions

### Is PSO free?

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

### Is École Cathédrale free?

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

### Do PSO or École Cathédrale have ads?

PSO shows ads; École Cathédrale does not.

### Which is updated more often, PSO or École Cathédrale?

PSO ships an update every 15 months, and École Cathédrale every 6 days. Most recently, PSO was updated on October 26, 2026 and École Cathédrale on October 25, 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.*