# ICO – Smart pool/spa partner — Simplifies your pool/spa > Smart pool and spa water quality monitoring and guidance. (iPhone/iPad app by ONDILO.) - Source: https://appshunter.io/ios/app/ico-smart-poolspa-partner/id1132611479 (this page in markdown: same URL + `.md`) - Developer: [ONDILO](https://appshunter.io/developer/1132611478) - Category: Lifestyle, Utilities - Price: Free - Rating: 3.95/5 from 38 App Store ratings · 109 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 78 MB - Languages: Czech, Danish, Dutch, English, French, German, Hungarian, Italian, Portuguese, Romanian and 2 more - Released: 2017-07-06 - Data updated: 2026-08-28 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ico-smart-poolspa-partner/id1132611479/reviews.md ## What is ICO? 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. ## Key features - Measures critical water parameters - Promotes healthier, cleaner water - Personalized chemical dosing guidance - Protects pool equipment - Provides best swimming experience - Accessible from anywhere, anytime ## Recent user reviews (10 of 109) All indexed reviews: https://appshunter.io/ios/app/ico-smart-poolspa-partner/id1132611479/reviews.md ### 1/5 — Um *2026-04-17, version 4.5.0* Honestly I can vibe code a better app in an hour. Can’t even change temperature from C to F ### 4/5 — Please use 24h clock!! *2026-03-27, version 4.5.0* Please can you let the app follow system preferences for measurement times and not just am/pm ### 3/5 — Great device, app needs improvement *2025-12-28, version 4.3.1* The device is great but the app doesn’t give you Imperial values in the Home Screen. Only when you look at the charts deeper in the app ### 5/5 — Perfekter Helfer *2025-11-02, version 4.3.1* Die Unterstützung als Dosierhilfe super. Auf‘s Gramm genaue Info wieviel Chlor, PH+ oder PH- Das Wasser ist IMMER glasklar, schäumt nicht und richt seit dem wir den ICO benutzen überhaupt nicht nach Chlor 😊 Ich würde mir nur für die Temperatur eine Echtzeiübertragung wünschen. Beim hochheizen vom Hottube nutzt mir die Temperatur von vor 1 Stunde gar nichts Ja, der ICO ist nicht billig aber wie ich finde sein Geld wert. ### 4/5 — Need acid added *2025-10-11, version 4.3.1* I have a quantity of muriatic acid used with my previous monitor. Need it added as a selection on this app. ### 4/5 — Where is muriatic acid? *2025-08-02, version 4.2.0* As a saltwater pool, owner and new owner of an ICO, I’m surprised that muriatic acid is not included in the list of chemicals. ### 5/5 — Parfais *2025-05-19, version 4.1.4* L’appareil reste onéreux, mais reste très efficace et donne de bonne mesure ### 2/5 — Problème de durée de vie *2025-05-15, version 4.1.4* Très pratique pour mesurer et suivre l’entretien. Quelques pertes de connexion. Premier ico en panne et changé avant les deux ans bien pris en garantie. Mais moins de deux après le second ico en panne aussi mais pas pris en garantie cette fois. Si nous devons en acheter un tous les 4 ans c’est pas terrible ! Du coup, on me propose une remise pour le remplacer mais je pas très rassuré sur la durée de vie du produit… ### 2/5 — Gutes Gerät, schlechte Batterie, schlechte Sensoren *2024-10-22, version 4.1.2* Wenn es mal läuft ist es super. Allerdings sind die Batterien Indie Sensoren ständig kaputt. ### 5/5 — ICO *2024-09-23, version 4.1.2* ICO est un appareil sensationnel et très efficace Je ne saurais plus m’en passer Il me permet aussi de faire des économies sur les produits ## Frequently asked questions about ICO ### What does the ICO app do? The ICO app helps you master your pool or spa water quality. It constantly measures critical water parameters, promotes healthier and cleaner water, and protects your pool equipment. It also offers personalized guidance for chemical dosing and best practices. ### What are the key features of the ICO app? Key features include constant measurement of critical water parameters, personalized guidance for chemical dosing, best practices for saving money and protecting swimmers, and remote accessibility from anywhere, anytime. It aims to provide a convenient way to monitor water quality. ### Is the ICO app free to use? Based on the provided information, the application itself is free. However, a connected ICO device is necessary to take full advantage of its functionalities. There are no in-app purchases or ads mentioned. ### What is required to use the ICO app? To fully utilize the ICO app, you will need a connected ICO device. This hardware is essential for the app to measure water parameters and provide its smart monitoring and guidance features. ### Who would benefit from using the ICO app? This app is ideal for pool and spa owners who want an easy and convenient way to monitor and maintain their water quality. It's designed for those who wish to ensure a healthier swimming experience, protect their equipment, and potentially save money on chemicals. ## Version history (last 5 releases) ### 4.5.0 — 2026-02-19 - Allow device calibration even without a Bluetooth connection, and even from an account that is not the device owner's. - Update of the “factory reset” button on the remote control page. - Display calibration results with 1 decimal place to better match the accuracy of the sensors. - Removal of the regeneration step from the device configuration process. ### 4.4.0 — 2026-01-16 Display of pH values less than 5 and greater than 10. Display of day names on graphs. New Calibration section to view the latest calibration. New Sensors section to indicate the presence of a conductivity probe. Enhanced recommendations. Access bug fixed and image display improved. ### 4.3.1 — 2025-09-02 v4.3 is here! This update makes calibration easier with a step-by-step tutorial and clear display of measured values. Recommendations are now more readable, highlighting their detailed explanations. The lid closing animation during water immersion has also been redesigned to better illustrate the right gesture. An update designed to bring you more simplicity and peace of mind every day! ### 4.3.0 — 2025-08-29 v4.3 is here! This update makes calibration easier with a step-by-step tutorial and clear display of measured values. Recommendations are now more readable, highlighting their detailed explanations. The lid closing animation during water immersion has also been redesigned to better illustrate the right gesture. An update designed to bring you more simplicity and peace of mind every day! ### 4.2.0 — 2025-06-19 - Calibration pop-up replaced by proper recommendation - New shortcut to usage guidelines in Help & Support - Smoother installation flow after account creation and QR scan - Startup animation adapted to ICO v1/v2 - Clear error message if server is unavailable - Plus a few bug fixes, including a display issue during Wi-Fi setup ## Apps similar to ICO | App | Rating | Price | Category | | --- | --- | --- | --- | | [Flipr](https://appshunter.io/ios/app/flipr/id1225898851) | 4.5 (12) | Free | Lifestyle | | [Crystal Water Monitor](https://appshunter.io/ios/app/crystal-water-monitor/id1616195969) | 3.8 (5) | Free | Lifestyle | | [Blueriiot - Blue Connect](https://appshunter.io/ios/app/blueriiot-blue-connect/id1109733256) | 4.7 (116) | Free | Lifestyle | | [WIS - connection to your spa](https://appshunter.io/ios/app/wis-connection-to-your-spa/id1564046576) | 3.8 (24) | Free | Lifestyle | | [in.touch 2 edition](https://appshunter.io/ios/app/intouch-2-edition/id1126466135) | 1.8 (110) | Free | Lifestyle | | [Wellis Spa Control](https://appshunter.io/ios/app/wellis-spa-control/id1492131457) | 1.3 (4) | Free | Lifestyle | ## Related topics [ico ondilo](https://appshunter.io/ios/topics/ico-ondilo) · [ondilo](https://appshunter.io/ios/topics/ondilo) · [smart pools](https://appshunter.io/ios/topics/smart-pools) · [4words by sanmarco informatica spa](https://appshunter.io/ios/topics/4words-by-sanmarco-informatica-spa) · [henden smart chlorinator](https://appshunter.io/ios/topics/henden-smart-chlorinator) · [seko spa](https://appshunter.io/ios/topics/seko-spa) · [smart pool connect](https://appshunter.io/ios/topics/smart-pool-connect) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*