# German Pool Smart Control vs 水務易 eWater

The clearest difference is update cadence: 水務易 eWater at monthly against German Pool Smart Control's every 8 months. German Pool Smart Control's advantage is iOS requirement (13.0 vs 15.5). 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.

German Pool Smart Control ships an update every 8 months, 水務易 eWater monthly. The most recent releases landed on September 8, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | German Pool Smart Control | 水務易 eWater |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Size | 233 MB | 87 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GERMAN POOL GROUP COMPANY LIMITED](https://appshunter.io/developer/1276215102) | [Water Supplies Department, the Government of the HKSAR](https://appshunter.io/developer/790111274) |

## What reviewers say

### German Pool Smart Control

[App page](https://appshunter.io/ios/app/german-pool-smart-control/id1639333093)

**Features:** macOS Compatibility

**In-app purchases:** none


### 水務易 eWater

[App page](https://appshunter.io/ios/app/ewater/id6449998378)

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

**In-app purchases:** none


## Frequently asked questions

### Is German Pool Smart Control free?

German Pool Smart Control is free to download, with no in-app purchases.

### Is 水務易 eWater free?

水務易 eWater is free to download, with no in-app purchases.

### Do German Pool Smart Control or 水務易 eWater have ads?

Neither German Pool Smart Control nor 水務易 eWater shows ads.

### Which is updated more often, German Pool Smart Control or 水務易 eWater?

German Pool Smart Control ships an update every 8 months, and 水務易 eWater monthly. Most recently, German Pool Smart Control was updated on September 8, 2026 and 水務易 eWater 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.*