Pool Calculator
Test in, doses out. Enter your readings and get exact amounts of chlorine, acid and more, in cups and pounds.
Listed in the stores as "Pool Calculator: Chlorine & pH". For iPhone and Android.
Coming soon. Pool Calculator is in final testing and store links will appear here when it is live.
What it does
- Enter free chlorine, combined chlorine, pH, alkalinity, calcium, CYA and salt from any test kit or strip.
- Get a step-by-step dosing plan in the units on the product label, ordered so each step does not undo the last.
- Targets follow the TroubleFreePool (TFP) method, including the free-chlorine to CYA relationship and a salt-water generator mode (Pro).
- A pool profile with a volume helper for rectangle, round, oval and kidney shapes.
- History with free-chlorine and pH trend charts and a shaded target band, plus test reminders (Pro).
- A clear reminder on every result: calculations are estimates, so always follow the product label.
Screenshots
A dosing plan 
History and trends 
First run
Privacy and support
Pool Calculator keeps your data on your device and has no ads, accounts or analytics. Read the Pool Calculator privacy policy or visit Pool Calculator support for answers to common questions. Email pool-calc@foursailsapps.com any time.