Summer heat hits pool chemistry hard. Enter readings, get told exactly what to add. Accurate LSI and health score. Free to start, one-time Pro, no subscription, no ads.
Stop guessing your pool chemistry. Enter your test results, get told exactly what to add, how much, and in what order. PoolChem Tracker calculates precise doses for your specific pool size, with a health score that tells you how balanced your water really is.
No account. No ads. Works completely offline. Your data never leaves your device.
Works with chlorine, salt water (SWG), and all pool types. Imperial or Metric.
START FREE — 5 COMPLETE WATER TESTS INCLUDED
• Dosing recommendations — exact amounts of chlorine, acid, baking soda, and more based on your pool size
• Pool Health Score (0–100) — know at a glance if your water is safe
• Prioritized action list — tells you what to fix first so you don't over-treat
• Chlorine targets that adjust based on your CYA level — not the "1–3 ppm" advice that ignores stabilizer
• Log FC, TC, pH, alkalinity, calcium hardness, CYA, salt, iron, copper, and phosphates
• Smart validation catches mistakes before you save
• LSI calculator — the real Langelier formula, not the simplified version
• Equipment maintenance tracker — skimmer, pump basket, filter, and SWG cell with due dates and overdue alerts
• Reference guide with ideal ranges scaled to your pool
• Chemical inventory tracking
UPGRADE TO PRO — $4.99 (one-time, no subscription)
• Unlimited water test logging — keep tracking all season without limits
• Full reading history with charts and trend tracking
• Health Score breakdown — see exactly which parameters are costing you points
• Climate-specific ranges for 6 zones (Desert, Tropical, Coastal, Mountain, Cold, Temperate)
• Trend detection and actionable insights across readings
• Task completion history — full log of past maintenance dates per task
• Custom maintenance intervals — set your own schedule for each task
• CSV export and import
• All 4 reminder types with custom intervals (testing, inventory, SWG cell, filter)
• Muriatic acid concentration setting (14.5% or 31.45%)
• Full LSI factor breakdown with "What If?" simulator
WHY POOL OWNERS SWITCH
Most pool apps use a simplified LSI formula and generic chlorine targets. PoolChem Tracker uses CYA-corrected alkalinity, polynomial temperature factors, and salt-adjusted TDS for the most accurate water balance calculation on mobile. If you've been using other apps or calculators or doing your own chemistry, this is the app that actually gets the math right.
Built by a pool owner who got tired of spreadsheets and pool store inconsistency.
A simple way to understand your data and protect the investment of your pool~
tracy v.
I liked the detailed corrections suggestions; and the explanations within each result on how to correct. The sliding scales were cool too! Helpful app for any climate whether you use your pool three months or 12 months out of the year~Also, reasonably priced and no reoccurring cost. One, and done!
Pool Owners: Get This APP
Leigh Veigh
So useful, great resource, everything you need at your fingertips!!
• Tasks tab — new equipment maintenance tracker with due dates, overdue alerts, and a red dot badge when something needs attention. Tracks skimmer, pump basket, filter, SWG cell, and more based on your pool setup.
• Filter pressure tracker — log baseline and current PSI for sand/DE filters to know exactly when to backwash.
• Task completion history (Pro) — tap any task to see a full log of past completion dates. Custom intervals per task also now available for Pro users.
• Inventory improvements — chemical name now uses a native picker, and each inventory item shows "On hand" and "Last added" as separate labeled fields.
• Free tier update — the free tier now includes 5 complete water tests with full recommendations. Upgrade to Pro for unlimited logging.
Version 1.18
The developer, Jeffrey Thompson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Jeffrey Thompson
Size
12.2 MB
Category
Utilities
Compatibility
Requires iOS 26.4 or later.
iPhone Requires iOS 26.4 or later.
iPad Requires iPadOS 26.4 or later.
Mac Requires macOS 26.4 or later and a Mac with Apple M1 chip or later.