Stop guessing. Start knowing.
Enter your water test results and get exact dosing recommendations for your pool size: what to add, how much, and in what order. A simple Pool Health Score (0-100) shows you where your water stands at a glance.

No account. No ads. No internet required. Your data stays on your device.

Works with chlorine pools, saltwater (SWG) pools, and all pool types. Imperial and Metric units supported.

Free: includes 5 complete water test logs
• Precise chemical doses calculated for your pool size
• Pool Health Score with prioritized treatment steps to avoid overcorrecting
• CYA-adjusted chlorine targets
• Log FC, TC, pH, Total Alkalinity, Calcium Hardness, CYA, Salt, Iron, Copper, and Phosphates
• Full LSI (Langelier Saturation Index) calculator
• Smart validation to catch typos before saving
• Equipment maintenance tracker with reminders for skimmer, pump basket, filter, and SWG cell
• Chemical inventory tracking
• Built-in reference guide with recommended ranges
• Automatic light and dark mode

Pro: one-time purchase, no subscription
• Unlimited water test history
• Charts and long-term trend tracking
• Detailed Health Score breakdown with per-parameter analysis
• Trend detection with actionable insights
• Six climate zone presets for more accurate water balance targets
• Borate tracking (30-50 ppm target range)
• Maintenance history and custom maintenance schedules
• Advanced reminders with custom intervals
• Liquid chlorine and muriatic acid concentration settings
• Advanced LSI factor breakdown with a "What If?" simulator
• CSV export and import

Built by a pool owner who wanted accurate, straightforward chemistry guidance without the guesswork or the subscription fee.