PoolCoach: Water Calculator
Exact Chemical Dosage
Only for iPhone
Free · In‑App Purchases
iPhone
Chlorine targets now adjust to your CYA level for accurate dosing. Plus a new Pool School glossary, daily chlorine reminders, and adjustable shock alerts.
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
Ratings & Reviews
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!
The developer, Coach Platform LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Coach Platform LLC
- Size
- 39.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- In-App Purchases
Yes
- PoolCoach Annual $29.99
- PoolCoach Monthly $3.99
- Copyright
- © 2026 Coach Platform LLC
