CAD eSUA vs 水務易 eWater
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CAD eSUA
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.
- SUA Registration
- Remote Pilot Registration
- Digital Compliance Platform
- Aviation Regulation Tool
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Small unmanned aircraft (SUA) Registration and / or Registration as Remote Pilot
水務易 eWater
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The Water Supplies Department launched a new integrated mobile app "eWater", consolidating the existing WSD mobile apps into a one-stop personalised digital water services information platform with an optimised user interface and enhanced features. Through “eWater”, users can access a wide range of water supplies information such as real-time push notifications on latest updates on water suspension and resumption, anytime and anywhere. Users can also manage their accounts, and apply for various water services directly within the app, including taking up and closing of water accounts, settling water bill payments via Faster Payment System with e-banking mobile apps, applying for e-bill services, and viewing billing summaries and payment histories without the need to deal with the submissions by post or in-person, providing a one-stop experience for users to access WSD services in an easy and flexible manner. “eWater” shows the amount due on the latest water bill with push notification options for bill issuance and payment deadlines. Users may also subscribe to specific concerned districts or housing estates to receive location-specific water suspension and resumption alerts, ensuring they stay informed about any water supplies status in their concerned area.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | CAD eSUA | 水務易 eWater |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 14.3% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 53 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | Civil Aviation Department | Water Supplies Department, HKSARG |
In-app purchases
CAD eSUA
No in-app purchases
水務易 eWater
No in-app purchases








