Most pool apps record what your water did. Pool Predictor Pro forecasts what it's going to do, days ahead and with a confidence range, so you test and dose on a schedule instead of reacting to green water.
Try it free: 2 water tests and 2 treatment logs on one pool, with the full forecast engine and no credit card. Keep going for $24.99 a year.
You've spent time and money getting your pool just right: the test kit, the reagents, the trip to the pool store, the afternoon spent chasing pH back down. The numbers finally land in range and the water looks perfect.
Then comes the part nothing answers. When should you test next? Tomorrow, or Saturday? What is happening in there each day while you're not looking? Is the chlorine holding, or will four days of full sun burn through it before you next pick up a strip?
Pool Predictor Pro gives you a view into the future. It runs your water forward day by day, factoring in your pool, your equipment and your local weather, then tells you the date each reading drifts out of range, before it does.
So you stop testing on a hunch. Every test you didn't need is reagent you didn't spend, and every drift you catch early is the expensive correction you never have to make.
Size, surface, sanitizer, equipment, cover, sun exposure and ZIP code for local weather. Tell us which chemicals you use and doses are sized to the products you actually own.
Enter your readings to start the model, or photograph your test-kit color scale and let the app read it. One test is enough to start predicting.
Every parameter charted days ahead, with your next check date and the exact dose to fix whatever is drifting.
A dosing calculator tells you what to add today. A forecast tells you what tomorrow looks like, and whether you need to act at all.
Simulates your entire water chemistry days ahead: chlorine, pH, alkalinity, stabiliser, calcium, salt and overall balance, each with a confidence range rather than just today's numbers.
Pulls your local UV, temperature, humidity, wind and rainfall to model sun-driven chlorine loss, evaporation and rain dilution. Your forecast reflects your actual sky.
Calibrates to your pool's real chlorine-loss rate from your own test history, getting more accurate the more you use it.
Set a target and get the amount in real units for the product you own (add about 0.4 gal of liquid chlorine to reach 8.0 ppm), sized to your pool's volume and current chemistry. It works in both directions, and it's built into the treatment log, so you see the effect before you save it.
No advertising SDKs, no advertising identifiers, no third-party tracking, and we never sell your data or hand it to advertisers. Your pools, tests and treatment logs live on your device and the app works offline. You can export or delete everything at any time.
We do email you occasionally about a product or an offer we think suits your pool, chosen by us from the profile you entered rather than by an ad network. One tap unsubscribes, and nothing else about your account changes.
No credit card to get started, either. Just a validated email address and password. The free tier covers one pool with two water tests and two treatment logs, which is enough to see a real forecast before you pay for anything, though not enough for the model to calibrate to your pool, so those forecasts use industry-standard drift rates and a wider prediction band.
Take control of your pool's chemistry with confidence. No hardware, no guessing, no sensors to replace each season.
Try it free: one pool, two water tests, two treatment logs, no credit card. Keep going for $24.99 a year, billed through Google Play, cancel any time.
Pool Predictor