Know when your pool needs attention, before it's a problem.
Most pool apps record what your water did. Pool Predictor Pro forecasts what it's going to do, days ahead, so you test and dose on a schedule instead of reacting to green water.
HOW IT WORKS
1. Tell us about your pool: size, surface, sanitizer, equipment, cover and sun.
2. Log a water test, typed in or read from your test kit with the camera.
3. See every parameter charted days ahead, with your next test date and the exact dose to fix whatever is drifting.
A REAL FORECAST, NOT A LOGBOOK
A daily simulation of your whole pool water chemistry: free and combined chlorine, pH, total alkalinity, cyanuric acid (CYA), calcium hardness, salt, water temperature and overall balance, projected forward with a confidence range.
WEATHER-AWARE PREDICTIONS
Your local UV, temperature, humidity, wind and rain drive the model: sun-driven chlorine loss, evaporation and rain dilution, from your actual sky, not a seasonal average.
IT LEARNS YOUR POOL
The app measures your pool's real chlorine loss, pH rise and alkalinity and calcium trends from your own tests, after subtracting your logged treatments. The more you test, the tighter the predictions get.
EXACT DOSES, YOUR PRODUCTS
A built-in pool chemical calculator: set a target and get the amount in real units for the product you actually own, like "add about 1.2 qt of muriatic acid to bring pH down to 7.5." It's built into the treatment log, so you see the effect before you save it.
GUIDED ALGAE CLEANUP (SLAM)
Green or cloudy pool? A step-by-step SLAM guide (Shock Level And Maintain) works out your target chlorine level from your CYA, tells you how much liquid chlorine to add and when to test next, tracks the overnight chlorine loss test, and tells you when the water is clear. While it runs, the rest of the app knows the high chlorine is on purpose.
WATER BALANCE, EXPLAINED
Your Langelier Saturation Index (LSI) shows whether water is balanced, corrosive or scaling, which parameter is driving it, and how to fix it.
SPECIAL FEATURES FOR SALT POOLS
Set your salt cell's output percentage and the forecast models its chlorine generation day by day against real demand. See what a change will do to your chlorine at +1, +3 and +7 days before you commit, and log a temporary boost separately from an ongoing setting change.
PUMP AND TURNOVER
Dial in runtime and speed for your ideal daily turnover, with flow from your pump's performance curve. Great for variable-speed pumps, where the right schedule saves real money.
COVER-SMART
Solar, safety and automatic covers change chlorine loss, evaporation, pH and heat, scaled by how often yours is closed.
CATCHES PROBLEMS EARLY
Every test is screened for common trouble: chloramines, high chlorine demand, a stabilizer crash, green and yellow algae, cloudy water, foaming, staining, and scaling or corrosive water. Flag what the water looks like and get a plain explanation plus a ready-to-log fix.
READ YOUR TEST KIT WITH THE CAMERA
Photograph your test kit's color scale and the app reads it for you. Works with the pool water testing kit you already have.
BUILT FOR REAL USE
Works without a signal, reminds you on your next test date, and moves to a new phone with one backup file.
TRY IT FREE
Start free with one pool, two water tests and two treatment logs, no credit card. Pro is $24.99 a year: unlimited tests and logs, up to two pools, and cloud sync across devices. Cancel any time in Google Play.
No proprietary sensors. No subscription pods. Just your test kit and the phone in your pocket.
Pool Predictor Pro is a planning and guidance tool, not a substitute for professional pool service. Always handle and store pool chemicals according to their label instructions.
Forecast your pool water chemistry: test reminders, exact chlorine & pH doses.