# CAD eSUA vs 水務易 eWater

The clearest difference is iOS requirement: CAD eSUA at 11.0 against 水務易 eWater's 15.5. 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.

CAD eSUA ships an update every 2 months, 水務易 eWater every 5 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | CAD eSUA | 水務易 eWater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/cad-esua/id1568670381/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 53 MB | 88 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Civil Aviation Department](https://appshunter.io/developer/670174039) | [Water Supplies Department, HKSARG](https://appshunter.io/developer/790111274) |

## What reviewers say

### CAD eSUA

[App page](https://appshunter.io/ios/app/cad-esua/id1568670381)

This application allows users to register small unmanned aircraft (SUA) and obtain remote pilot registration. It serves as a digital platform for compliance with aviation regulations.

**Highlights:** SUA Registration, Remote Pilot Registration, Digital Compliance Platform, Aviation Regulation Tool

**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 CAD eSUA free?

CAD eSUA 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 CAD eSUA or 水務易 eWater have ads?

Neither CAD eSUA nor 水務易 eWater shows ads.

### Which is updated more often, CAD eSUA or 水務易 eWater?

CAD eSUA ships an update every 2 months, and 水務易 eWater every 5 weeks. Most recently, CAD eSUA was updated on November 3, 2026 and 水務易 eWater on November 3, 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.*