Poolary

Log pool & hot tub water tests, get instant safe-range alerts and exact dosing amounts for your volume. 100% offline and private — no account.

Poolary is the offline pool chemistry calculator and water test log that helps you keep crystal-clear, perfectly balanced water all season long — without guesswork, messy spreadsheets, or a monthly subscription.

Whether you own a backyard swimming pool, a saltwater pool, or a relaxing hot tub or spa, balancing the water by hand is stressful. How much chlorine should you add? Is the pH too low to swim? When did you last shock it? Poolary answers all of that in seconds, right on your phone, and works completely offline so your data always stays private.

LOG EVERY WATER TEST

• Record free chlorine, total chlorine, pH, total alkalinity, cyanuric acid (CYA / stabilizer), calcium hardness, salt and water temperature.
• Keep a complete, searchable history of every reading for each pool or spa you own.
• Add notes for shock treatments, filter cleans, rain, heavy bather loads and more.

INSTANT SAFE-RANGE WARNINGS

• Every reading is checked against recommended safe ranges for pools and hot tubs.
• Clear color-coded alerts tell you immediately when chlorine, pH or alkalinity is too high or too low.
• Understand exactly which value is out of balance before anyone gets in the water.

SMART DOSING CALCULATOR

• Tell Poolary your pool volume once and it calculates exactly how much chemical to add.
• Get precise dosing amounts for chlorine, pH up and pH down, alkalinity increaser, stabilizer, calcium and salt.
• No more overshooting or wasting expensive chemicals — add the right amount the first time.

MAINTENANCE SCHEDULE & REMINDERS

• Set recurring tasks for testing, shocking, brushing, backwashing and filter cleaning.
• Get gentle reminders so routine pool maintenance never slips through the cracks again.
• Build a healthy weekly care routine that keeps water balanced all summer.

STATS & INSIGHTS

• Visualize pH, chlorine and alkalinity trends over time with clear, attractive charts.
• Spot recurring problems before they turn green water into a costly weekend fix.
• Track how stable your water chemistry stays week after week and season after season.

PERFECT FOR

• Backyard swimming pool owners who want clear water without hiring a weekly service.
• Saltwater pool owners tracking salt and stabilizer levels.
• Hot tub and spa owners who need quick, reliable water care between soaks.
• Anyone tired of paper logs, confusing pool-store printouts, or pure guesswork.

100% OFFLINE & PRIVATE

• Poolary works entirely on your device with no account and no sign-up.
• Your pool data is never uploaded to a server and is never sold to anyone.
• Export and import your full history as JSON or CSV whenever you like.

SAFETY NOTE Dosing recommendations are estimates meant to guide your routine. Always follow the directions printed on your chemical product labels, add chemicals one at a time, and retest before swimming. Poolary does not replace professional advice for pool equipment, electrical, or water-safety issues.

Download Poolary today and turn pool and hot tub water care into a simple, confident, repeatable routine.