# Ma Rivière et Moi vs EM by SIMAX

The clearest difference is update cadence: EM by SIMAX at every 6 weeks against Ma Rivière et Moi's every 3 months. Ma Rivière et Moi's advantage is iOS requirement (13.0 vs 15.6). 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.

Ma Rivière et Moi ships an update every 3 months, EM by SIMAX every 6 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Ma Rivière et Moi | EM by SIMAX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 39 MB | 22 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EDF](https://appshunter.io/developer/401110261) | [Groupe Roederer](https://appshunter.io/developer/1337779396) |

## What reviewers say

### Ma Rivière et Moi

[App page](https://appshunter.io/ios/app/ma-riviere-et-moi/id1524259896)

This application helps users enjoy water activities like fishing and canoeing safely around hydroelectric facilities. It provides information on dam locations, operational status, restricted zones, and activity suitability based on water levels. Users can also subscribe to notifications for exceptional maneuvers and report issues.

**Highlights:** Hydroelectric facility locations, Operational status alerts, Safety zone information, Activity suitability based on water levels, Customizable notifications, Report abnormal situations

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

**In-app purchases:** none


### EM by SIMAX

[App page](https://appshunter.io/ios/app/em-by-simax/id6745510133)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ma Rivière et Moi free?

Ma Rivière et Moi is free to download, with no in-app purchases.

### Is EM by SIMAX free?

EM by SIMAX is free to download, with no in-app purchases.

### Do Ma Rivière et Moi or EM by SIMAX have ads?

Neither Ma Rivière et Moi nor EM by SIMAX shows ads.

### Which is updated more often, Ma Rivière et Moi or EM by SIMAX?

Ma Rivière et Moi ships an update every 3 months, and EM by SIMAX every 6 weeks. Most recently, Ma Rivière et Moi was updated on November 3, 2026 and EM by SIMAX on October 30, 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.*