Track pool chemistry, get exact dosing recommendations, and monitor LSI balance — all private and offline on your device.
Free to start. Pro upgrade $4.99 one-time — no subscription.
Know what chemicals to add and how much, based on your pool size and readings.
Full Langelier Saturation Index with CYA-corrected alkalinity. Not the simplified version.
One number, 0-100, that tells you instantly if your water is balanced.
Interactive charts show how your chemistry changes over time.
All data stays on your device. No account, no cloud, no tracking.
No internet needed. Use it poolside, anywhere.
Start free with up to 5 readings. Upgrade once for unlimited history, charts, and more.
Join pool owners who've stopped guessing and started tracking.
