ICO vs U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ICO
This application helps you maintain optimal water quality in your pool or spa. It provides personalized guidance for chemical dosing and best practices to ensure a healthier swimming experience and protect your equipment. Monitor your water quality conveniently from anywhere, anytime.
- Measures critical water parameters
- Promotes healthier, cleaner water
- Personalized chemical dosing guidance
- Protects pool equipment
- Provides best swimming experience
- Accessible from anywhere, anytime
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At Ondilo we know that mastering the water in a pool or spa is an art. That's why we created ICO. Constantly measuring critical water parameters, ICO promotes healthier, cleaner water, to protect pool equipment and provide best swimming experience. Proposing personalized guidance for chemical dosing and best practices to save money, protect swimmers and the environment. Accessible from anywhere, anytime, ICO provides a convenient, easy way to keep an eye on your pool water quality at all times. So that you spend more time enjoying your pool ! ICO, and it all becomes crystal-clear Find out more about ICO's functionalities on www.ondilo.com A ICO connected device is necessary to take full advantage of this application.
U
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U-spa can easily control spas through mobile phone. Even if you are not at home, status information of spa will be pushed over as long as you open the APP, allowing you to keep track of its dynamics at any time. U-spa “one-click” share device to families and friends, allowing the whole families enjoy smart life easily. APP should be used with wifi module and associated device; U-spa makes swimming exercise data visible. For the function of APP swimming module, you need to buy swimming machines or products with swimming functions. The health data shown in APP is for reference only.
Screenshots
Verdict
The clearest difference is update cadence: U at every 3 days against ICO's every 5 weeks. On price, ads, in-app purchases and device support 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.
ICO ships an update every 5 weeks, U every 3 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | ICO | U |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (139 ratings) — better | — |
| Positive reviews | 45.9% of reviews | — |
| Number of ratings | 139 — better | — |
| Update frequency | Every 5 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 78 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | ONDILO | Guangdong Crystal Island Healthwise Co.,Ltd |
In-app purchases
ICO
No in-app purchases
U
No in-app purchases









