# H2OCHK Hayward > Pool and spa water quality testing with chemical dosage recommendations. (iPhone/iPad app by Digital Concepts of Missouri, Inc..) - Source: https://appshunter.io/ios/app/h2ochk-hayward/id1367373317 (this page in markdown: same URL + `.md`) - Developer: [Digital Concepts of Missouri, Inc.](https://appshunter.io/developer/1159162920) - Category: Utilities - Price: Free - Rating: 3.00/5 from 4 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 13.6 · 17 MB - Languages: American English, German (Germany), European Spanish - Released: 2020-03-04 - Data updated: 2026-06-01 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/h2ochk-hayward/id1367373317/reviews.md ## What is H2OCHK Hayward? This app allows any pool or spa user to quickly and accurately measure 5 important water quality parameters: pH, Chlorine, Total Alkalinity, Total Hardness and Cyanuric Acid. No guesswork, just fast accurate results every time. Based on pool size, App will recommend chemical dosages for perfect water balance. ## Key features - Measures 5 water quality parameters - Accurate and fast results - Recommends chemical dosages - Supports pool and spa water - Helps achieve perfect water balance ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/h2ochk-hayward/id1367373317/reviews.md ### 1/5 — Does not work with any iPhone that has more than one camera lens *2023-06-23* Anything newer than the iPhone X series won’t work as the camera can’t get close to the strip without going blurry and there’s no way to zoom in on the strip from farther away where it’s clear. ### 1/5 — Crash *2023-03-15, version 1.6* Muy mala; se me cae cada 2 semanas y no funciona en iPh 14 ### 1/5 — App muy mala *2023-03-12, version 1.6* Simplemente no funciona ni para recuperar el usuario. ### 1/5 — Malísima *2023-03-04, version 1.6* Imposible leer las tiras con iPhone 13 Pro Max. ### 1/5 — No funciona! *2023-02-18, version 1.6* Mal ### 1/5 — No funciona *2023-01-27, version 1.6* No lee la tira y no le saca la foto ### 1/5 — No funciona *2023-01-15, version 1.6* Muy mala, no funciona casi nunca, es muy difícil que el teléfono Lena las tiras y con el I phone 13 pro es imposible leer las tiras ### 1/5 — Falla lecturas *2022-08-26, version 1.4* Aplicación se cae cuando trato de leer tira y con inicio de sesión no ingresa a ningún lado. La única forma de leer las tiras es creando una cuenta desde el principio ### 1/5 — The help is not working *2022-04-20* Not working. Cannot login most of the time. The app will not read my strip. ### 5/5 — Kneel before the powerful *2021-07-14* There’s only one review which means I have the power to bring this perfect 5 star app to a 2.5 star. The choice is yours… ## Frequently asked questions about H2OCHK Hayward ### What water parameters does H2OCHK Hayward measure? H2OCHK Hayward measures five important water quality parameters: pH, Chlorine, Total Alkalinity, Total Hardness, and Cyanuric Acid. This allows for a comprehensive understanding of your pool or spa's water condition. ### How accurate are the results from H2OCHK Hayward? The app is designed to provide fast and accurate results every time, eliminating guesswork. While specific accuracy metrics are not detailed, the description emphasizes precision for optimal water balance. ### Does H2OCHK Hayward offer guidance on chemical treatments? Yes, based on your pool size and the measured water parameters, H2OCHK Hayward will recommend specific chemical dosages. This feature helps users achieve perfect water balance without manual calculations. ### What devices is H2OCHK Hayward compatible with? H2OCHK Hayward is available for iPhone and iPod devices. It was last updated on December 2, 2022, with version 1.6. ### What is the age rating for H2OCHK Hayward? H2OCHK Hayward has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals assisting with pool maintenance. ### Is H2OCHK Hayward free to use? Yes, H2OCHK Hayward is available for free. However, the app does contain advertisements, as indicated by its ad-supported monetization model. ### How often is H2OCHK Hayward updated? The latest version of H2OCHK Hayward, 1.6, was released on December 2, 2022. While specific update frequency isn't detailed, this indicates recent maintenance and potential for future updates. ### What do users think of H2OCHK Hayward? User feedback for H2OCHK Hayward is limited, with a current rating of 3.0 stars from 4 ratings. This suggests a mixed reception, with potential areas for improvement based on user experience. ## Version history (last 5 releases) ### 1.6 — 2022-12-02 Bugfixes and performance improvements. ### 1.4 — 2021-03-17 Bugfixes and performance improvements. ### 1.3 — 2020-04-26 Bugfixes and performance improvements. ### 1.1 — 2020-04-14 Bugfixes and performance improvements. ### 1.0.7 — 2020-03-31 Bugfixes and performance improvements. ## Apps similar to H2OCHK Hayward | App | Rating | Price | Category | | --- | --- | --- | --- | | [Pool Doctor](https://appshunter.io/ios/app/pool-doctor/id375459618) | 4.4 (130) | $19.99 | Utilities | | [Test Strip Scanner](https://appshunter.io/ios/app/test-strip-scanner/id6453356600) | 3.2 (9) | Free | Utilities | | [Hayward PoolComm®](https://appshunter.io/ios/app/hayward-poolcomm/id600090247) | 3.2 (6) | Free | Utilities | | [HPOWER](https://appshunter.io/ios/app/hpower/id1436773059) | 1.0 (1) | Free | Utilities | | [Pooldash](https://appshunter.io/ios/app/pooldash/id1505607801) | 4.6 (11) | $19.99 | Utilities | | [Pool Plus](https://appshunter.io/ios/app/pool-plus/id1488707868) | 5.0 (2) | $0.99 | Utilities | ## More apps by Digital Concepts of Missouri, Inc. - [H2OCHK](https://appshunter.io/ios/app/h2ochk/id1159162921) - [Beachcomber H2OCHK](https://appshunter.io/ios/app/beachcomber-h2ochk/id1358839104) - [H2OCHK Doughboy](https://appshunter.io/ios/app/h2ochk-doughboy/id1475946709) All apps by Digital Concepts of Missouri, Inc.: https://appshunter.io/developer/1159162920 --- *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 2026-06-01.*