# Proteo vs Eau de Metz

The clearest difference is update cadence: Eau de Metz at every 3 months against Proteo's every 57 months. Proteo's advantage is iOS requirement (12.0 vs 15.1). 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.

Proteo ships an update every 57 months, Eau de Metz every 3 months. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Proteo | Eau de Metz |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 57 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 5 MB | 36 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [COMAP S.A.](https://appshunter.io/developer/1051668832) | [VEOLIA EAU - COMPAGNIE GENERALE DES EAUX](https://appshunter.io/developer/1791098614) |

## What reviewers say

### Proteo

[App page](https://appshunter.io/ios/app/proteo/id1120180106)

This application allows you to remotely manage a connected water treatment system. Monitor filter wear, track water consumption, and receive maintenance alerts for optimal water quality and appliance protection throughout your home.

**Highlights:** Remote system control, Consumable wear monitoring, Real-time water consumption tracking, Maintenance procedure access, Dysfunction alerts, Water quality optimization

**Features:** macOS Compatibility

**In-app purchases:** none


### Eau de Metz

[App page](https://appshunter.io/ios/app/eau-de-metz/id1629684344)

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

**In-app purchases:** none


## Frequently asked questions

### Is Proteo free?

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

### Is Eau de Metz free?

Eau de Metz is free to download, with no in-app purchases.

### Do Proteo or Eau de Metz have ads?

Neither Proteo nor Eau de Metz shows ads.

### Which is updated more often, Proteo or Eau de Metz?

Proteo ships an update every 57 months, and Eau de Metz every 3 months. Most recently, Proteo was updated on September 30, 2026 and Eau de Metz on October 9, 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.*