# Foch vs echOpen ON

The clearest difference is iOS requirement: Foch at 13.0 against echOpen ON's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on April 22, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Foch | echOpen ON |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Size | 18 MB | 67 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [ASSOCIATION HOPITAL FOCH](https://appshunter.io/developer/1328446445) | [echopen factory](https://appshunter.io/developer/1530808488) |

## What reviewers say

### Foch

[App page](https://appshunter.io/ios/app/foch/id1157618633)

**In-app purchases:** none


### echOpen ON

[App page](https://appshunter.io/ios/app/echopen-on/id1664469384)

**In-app purchases:** none


## Frequently asked questions

### Is Foch free?

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

### Is echOpen ON free?

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

### Do Foch or echOpen ON have ads?

Neither Foch nor echOpen ON shows ads.

### Which is updated more often, Foch or echOpen ON?

Foch ships an update every 4 months, and echOpen ON every 4 months. Most recently, Foch was updated on April 22, 2026 and echOpen ON on September 12, 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.*