Pool Bible

Scan your test log or bleach label. Get exact liquid chlorine doses, CYA-based targets, trend charts, and weekly reminders — on your iPhone.

Pool Bible tells you exactly how much liquid chlorine to add after every water test.

INSTANT DOSING Enter free chlorine and cyanuric acid (CYA). Pool Bible calculates your target from CYA using common pool-care rules, then shows how many ounces or gallons of liquid chlorine to add for your pool volume and product strength.

SCAN INSTEAD OF TYPING • Scan photos of test logs, app screenshots, or worksheets • Scan your bleach bottle label to capture strength (10%, 12.5%, etc.) • On-device Vision and Apple Intelligence where available

TRACK THE SEASON • Log FC, CYA, pH, alkalinity, and more • Trend charts with target bands • Export CSV for service records

STAY ON SCHEDULE • Weekly test reminders • Alerts when chlorine or CYA drift out of range

PRIVATE BY DESIGN All pool data stays on your device. No account required.

Pool Bible is a homeowner helper, not a substitute for professional water testing. Always follow product label instructions.