# ChlorCast — Pool Water Testing & Balance > Pool water testing, chemistry guidance, and chlorine forecasting app. (iPhone/iPad app by Sean OBrien.) - Source: https://appshunter.io/ios/app/chlorcast/id6777863208 (this page in markdown: same URL + `.md`) - Developer: [Sean OBrien](https://appshunter.io/developer/6777834311) - Category: Utilities - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 26.0 · 6 MB - Languages: American English - Released: 2026-06-18 - Data updated: 2026-07-21 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/chlorcast/id6777863208/reviews.md ## What is ChlorCast? ChlorCast helps you stay ahead of water problems by combining fast test logging, clear chemistry guidance, chlorine forecasting, and maintenance tracking in one simple app. Whether you want a quick daily chlorine and pH check or a full chemistry snapshot, ChlorCast helps you understand your pool and know exactly what to do next. With every test you log, ChlorCast turns your readings into practical next steps. Instead of leaving you with numbers alone, the app highlights what needs attention, estimates chemical adjustments, and helps you keep your water balanced with more confidence. Weather-aware chlorine forecasting also helps you prepare for days when heat, sun, and rain may drive chlorine down faster than usual. ChlorCast is designed for real-world pool ownership, not just calculations. It gives you a current water snapshot, tracks test history over time, helps you monitor chemical inventory, and keeps useful pool-side references close at hand. The result is a cleaner, more organized way to manage your pool all season long. Features: • Log quick tests for free chlorine and pH • Record full chemistry tests including FC, pH, CC, TA, CH, CYA, and temperature • Get fix recommendations based on your latest readings • See when water needs attention and what action to take next • Forecast chlorine loss using weather conditions and upcoming trends • Track test history and monitor changes over time • View a current water health snapshot and seasonal metrics • Manage chemical inventory and estimated chemical costs • Keep maintenance records in one place • Use built-in conversion references while testing pool-side • Set reminders for quick tests, full tests, and forecast-driven chlorine checks ChlorCast is built to help pool owners stay proactive, reduce uncertainty, and spend less time guessing at water care. From daily upkeep to longer-term chemistry trends, it gives you a clearer picture of your pool and a better plan for keeping it swim-ready. If you want a smarter way to test, track, forecast, and maintain your pool water, ChlorCast is ready to help. ## Key features - Log quick and full chemistry tests - Get chemistry fix recommendations - Forecast chlorine loss with weather data - Track test history and water changes - Manage chemical inventory - Set maintenance reminders ## Frequently asked questions about ChlorCast ### What pool chemistry parameters can ChlorCast test? ChlorCast allows logging of quick tests for free chlorine and pH. It also supports full chemistry tests including FC, pH, CC, TA, CH, CYA, and temperature. ### Does ChlorCast offer guidance on water balance? Yes, ChlorCast provides fix recommendations based on your latest readings. It highlights what needs attention and suggests chemical adjustments to keep your water balanced. ### How does ChlorCast forecast chlorine levels? ChlorCast uses weather-aware forecasting to predict chlorine loss. It considers heat, sun, and rain to help you prepare for days when chlorine may deplete faster. ### Can I track my pool's water history with ChlorCast? Absolutely. ChlorCast tracks your test history over time, allowing you to monitor changes and understand seasonal metrics for your pool's water health. ### Does ChlorCast help manage pool chemicals? Yes, ChlorCast helps you monitor your chemical inventory and provides estimates of chemical costs, aiding in better management of your pool supplies. ### What devices is ChlorCast available on? ChlorCast is available for iPhone and iPad devices. ### How often is ChlorCast updated? The latest version, 1.3, was released on June 28, 2026, indicating regular updates to improve functionality and reliability. ### What is the age rating for ChlorCast? ChlorCast has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 4 releases) ### 1.4 — 2026-07-10 - Added "top-off" recommender for when chlorine is within normal limits but on the low end and may go out within the day or the next day to prevent users from having to constantly test water. - Fixed small bug where stabilizer recommendation would show zero if the recommended dosing was too small - Added Metric conversion option ### 1.3 — 2026-06-28 Minor bug fixes ### 1.2 — 2026-06-20 Tightened testing metrics, added support for granular chlorine, UI/UX improvements ### 1.1 — 2026-06-18 No release notes. ## More apps by Sean OBrien - [DoughPilot](https://appshunter.io/ios/app/doughpilot/id6777865050) All apps by Sean OBrien: https://appshunter.io/developer/6777834311 --- *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 2026-07-21.*