PoolChem Tracker
Chemistry Calculator & Dosing
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Opening your pool this season? Enter your readings, get told exactly what to add. Free to start, dosing calculator, health score, and LSI balance in one app.
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.
WHAT YOU GET FOR FREE
• 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
• Reference guide with ideal ranges scaled to your pool
• Chemical inventory tracking
UPGRADE TO PRO — $4.99 (one-time, no subscription)
• Unlimited reading history with charts and trend tracking
• Health Score breakdown — see exactly which parameters are costing you points
• Score Simulator — adjust FC, pH, and CYA to preview the impact before touching your water
• Climate-specific ranges for 6 zones (Desert, Tropical, Coastal, Mountain, Cold, Temperate)
• Trend detection and actionable insights across readings
• CSV export and import
• All 4 reminder types (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 following TFP 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.
User request: Inventory now lets you type any item you want to add by name. Also added algaecide, clarifier and metal remover the drop down.
Calcium hardness recommendations are smarter: drain advice only appears when your water chemistry is actually scale-forming.
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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jeffrey Thompson
- Size
- 12.1 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. - Apple Vision
Requires visionOS 26.4 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- PoolChem Pro $4.99
- Copyright
- © 2026 Jeffrey Thompson