1O1O vs 水務易 eWater
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
1O1O
Manage your mobile service plan, monitor usage, and access exclusive offers. Activate 5G roaming, explore new devices and plans, and enjoy customer privileges. Access 5G services and applications for various entertainment and utility needs.
- Manage mobile service plan
- Monitor data and voice usage
- Activate 5G roaming
- Access limited-period offers
- Browse mobile models and plans
- Check 5G coverage map
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The new 1O1O app enables users to manage a mobile service plan and account, activate 5G roaming, enjoy 86-easy convenience and access limited-period offers. Explore and manage your mobile service: • Monitor and manage data and voice-calling usage, as well as roaming balance • Check your account balance, billing history and settlement, and establish automatic credit card payment • Manage data usage for secondary SIMs and sharing of data-roaming pass entitlement 1O1O customer privileges • Get gifts and limited-period offers via the “My Wallet & Rewards” feature, while activating free value-added services Browse the latest mobile models, service plans and roaming options: • Enjoy exclusive pricing privileges when making a standalone handset purchase • Obtain data top-ups, data-roaming day passes and other value-added services Unlock the awesome power of 5G technology: • Access 5G services and apps • Obtain 5G applications for music, gaming, sports, eSports, entertainment and VR • Check over the 5G coverage map Many more features await your pleasure. Please note: Selected functions and information are exclusive to 1O1O customers using a login account.
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: 1O1O at 13.0 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.
1O1O ships an update every 3 weeks, 水務易 eWater monthly. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.
| Parameter | 1O1O | 水務易 eWater |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (4 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 179 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | CSL Mobile Limited | Water Supplies Department, HKSARG |
In-app purchases
1O1O
No in-app purchases
水務易 eWater
No in-app purchases






