# PoolCoach: Water Calculator — Exact Chemical Dosage Math Fix > Exact chemical dosing calculator for pools and spas based on water test results. (iPhone/iPad app by Coach Platform LLC.) - Source: https://appshunter.io/ios/app/poolcoach-water-calculator/id6786476585 (this page in markdown: same URL + `.md`) - Developer: [Coach Platform LLC](https://appshunter.io/developer/6786476587) - Category: Utilities - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 17+ - Requires: iOS 15.1 · 38 MB - Languages: American English - Released: 2026-08-22 - Data updated: 2026-10-02 - Monetization: subscription - User reviews in markdown: https://appshunter.io/ios/app/poolcoach-water-calculator/id6786476585/reviews.md ## What is PoolCoach? PoolCoach turns your water test results into exact chemical dosing — calculated for your exact pool or spa volume, not a generic chart. KNOW EXACTLY WHAT TO ADD, AND HOW MUCH Enter your chlorine, pH, alkalinity, calcium, and stabilizer readings. PoolCoach calculates the precise amount of each chemical you need, in the right order, with timing notes — so you're never guessing. BUILT FOR EVERY POOL TYPE Whether you have a standard chlorine pool, a saltwater pool with a salt water generator (SWG), a hot tub, or a spa, PoolCoach adjusts its calculations and targets specifically for your setup. NEVER MISS A SHOCK OR FILTER CLEANING PoolCoach reminds you to shock your pool on a 7-day cycle — adjustable during higher-use summer months — and to clean your filter every 90 days, with follow-ups if you haven't marked it done, so nothing falls through the cracks. DIAGNOSE AND FIX COMMON PROBLEMS Green water, cloudy pool, black or mustard algae, red eyes, staining — pick your symptom and get a complete, step-by-step treatment plan built from real pool chemistry. TRACK YOUR EQUIPMENT Log your pump, filter, and vacuum by brand and model, with automatic reminders for 90-day filter cleaning cycles. SEE YOUR FULL SEASON HISTORY Every reading you log is saved automatically, so you can spot trends and catch small problems before they become expensive ones. SHOP THE EXACT PRODUCT YOU NEED Every recommendation links directly to the specific product and amount — no more guessing what to grab at the store. FULLY BILINGUAL Every screen, label, and notification is available in both English and Spanish — switch instantly with one tap. PoolCoach is built for real pool owners who want straightforward answers, not a chemistry degree. No ads, no free tier — just accurate, exact guidance every time you test your water. Subscription pricing: - Monthly: $3.99/month - Annual: $29.99/year (save 37%) Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription anytime in your iPhone Settings. Privacy Policy: https://coachplatform.app/privacy.html ## Key features - Exact chemical dosing calculations - Pool and spa type specific adjustments - Maintenance reminders (shock, filter) - Problem diagnosis and treatment plans - Equipment tracking - Full season history logging - Bilingual (English/Spanish) ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | PoolCoach Monthly | $3.99 | per month | | PoolCoach Annual | $29.99 | per year | ## Frequently asked questions about PoolCoach ### How does PoolCoach calculate chemical dosages? PoolCoach calculates precise chemical dosages by taking your specific water test readings (chlorine, pH, alkalinity, calcium, stabilizer) and your pool or spa's exact volume. It then provides the exact amount of each chemical needed, in the correct order, with timing notes. ### Does PoolCoach support different pool types? Yes, PoolCoach is built for various pool types, including standard chlorine pools, saltwater pools with a salt water generator (SWG), hot tubs, and spas. It adjusts its calculations and targets specifically for your setup. ### What kind of reminders does PoolCoach offer? PoolCoach reminds you to shock your pool on a 7-day cycle (adjustable) and to clean your filter every 90 days. It provides follow-ups if you haven't marked these tasks as done. ### Can PoolCoach help diagnose pool problems? Yes, PoolCoach can help diagnose common pool problems like green water, cloudy pools, algae, red eyes, and staining. It provides a complete, step-by-step treatment plan based on real pool chemistry. ### What is the subscription cost for PoolCoach? PoolCoach offers two subscription plans: a monthly subscription for $3.99/month and an annual subscription for $29.99/year, which saves you 37%. Payment is charged to your Apple ID and subscriptions auto-renew. ### How do I cancel my PoolCoach subscription? You can manage or cancel your PoolCoach subscription anytime within your iPhone Settings. Subscriptions must be canceled at least 24 hours before the end of the current period to avoid renewal. ### Is PoolCoach available in multiple languages? Yes, PoolCoach is fully bilingual and available in both English and Spanish. You can switch between languages instantly with one tap on any screen, label, or notification. ### Does PoolCoach have ads? No, PoolCoach is ad-free. The app is designed to provide accurate, exact guidance without advertisements, focusing solely on its utility features. ## Version history (last 5 releases) ### 1.0.5 — 2026-09-28 Updated subtitle and search keywords for better App Store discovery. No app changes in this version. ### 1.0.4 — 2026-09-23 Now with 7-day free trial. Try every feature free before you subscribe. Updated subscription screen with clearer pricing. Added app preview video. Minor text and performance improvements. ### 1.0.3 — 2026-09-12 More accurate chlorine dosing, plus new tools to help you stay ahead of your pool's chemistry. SMARTER CHLORINE TARGETS Your chlorine target now automatically adjusts based on your CYA (stabilizer) level, using the same formula trusted pool professionals use. Higher CYA means you need more chlorine to keep the same sanitizing power — PoolCoach now accounts for that everywhere: Test, Dose, Plan, and History. BETTER ALGAE TREATMENT The Shock calculator now calculates the exact amount needed to kill algae based on your CYA level and current chlorine reading, instead of a generic flat dose. Fix It guides for algae have been updated with the same accurate guidance. NEW: DAILY LIQUID CHLORINE OPTION Prefer adding small amounts of liquid chlorine daily or every other day instead of tablets? PoolCoach now supports that routine with its own reminder schedule and a built-in calculator that tells you exactly how much to add. NEW: ADJUSTABLE SHOCK REMINDERS Set your weekly shock reminder to whatever cycle fits your pool — from every day up to once a week — instead of a fixed 7-day schedule. NEW: POOL SCHOOL A new glossary explaining the pool chemistry terms used throughout the app — FC, CYA, SLAM, pH, alkalinity, and more — in plain language. Find it under Settings. ALSO IN THIS UPDATE - Fixed an issue where the keyboard could cover input fields on the Pool Size and Test screens - Fixed a bug where the Shock calculator could close unexpectedly - Brightened secondary text throughout the app for better readability outdoors - Various other bug fixes and improvements Thank you for using PoolCoach! ### 1.0.2 — 2026-09-08 App Store listing updates. ### 1.0.1 — 2026-09-02 Bug fixes and improvements, including a smoother experience entering pool measurements and test results. ## Apps similar to PoolCoach | App | Rating | Price | Category | | --- | --- | --- | --- | | [Rheem Calcu Save](https://appshunter.io/ios/app/rheem-calcu-save/id1110121420) | 4.4 (38) | Free | Utilities | | [My Armory](https://appshunter.io/ios/app/my-armory/id1491569076) | 4.8 (148) | Free | Utilities | | [Auto Key Max](https://appshunter.io/ios/app/auto-key-max/id6636536386) | 3.2 (9) | Free | Utilities | | [TailWind Smart](https://appshunter.io/ios/app/tailwind-smart/id1255530678) | 3.4 (89) | Free | Utilities | | [ChefsTemp](https://appshunter.io/ios/app/chefstemp/id1665502676) | 4.2 (76) | Free | Utilities | | [MyFW](https://appshunter.io/ios/app/myfw/id1463082731) | 4.1 (31) | Free | Utilities | ## More apps by Coach Platform LLC - [AutoCoach: Track My Car](https://appshunter.io/ios/app/autocoach-track-my-car/id6797131122) All apps by Coach Platform LLC: https://appshunter.io/developer/6786476587 --- *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 2026-10-02.*