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What’s New Version 1.18
• 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.
Description
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.
In-App Purchases US pricing
One-Time Purchases
PoolChem Pro$4.99
Capabilities
In-App Purchases
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Version history 16 versions
Build 887461312v1.182026-06-30 03:24:47
• 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.
Build 887410717v1.162026-06-25 15:28:12
Log form redesigned. The entry form is now split into two labeled sections. "Readings for Calculations & Recommendations" groups the parameters that drive your health score, LSI, and dosing advice (Temp, FC, TC, pH, TA, CH, CYA, Salt). "Tracking Only" groups Iron, Copper, and Phosphates below a clear divider — still logged, just visually separated from what the app calculates with.
History table. Column order now matches the log form, making it easier to cross-reference past readings with what you just entered.
Desert / Arid climate fix. Corrected the pH target range for users with Desert or Arid climate selected. Previous range was 7.7–7.9 (target 7.8); corrected to 7.6–7.8 (target 7.6).
Smarter chlorine recommendations. Fixed a case where a chlorine boost recommendation appeared unnecessarily when both CYA was low and FC was deficient at the same time. The app now correctly holds the chlorine step until after CYA is corrected, with clearer guidance on sequencing. Shock step notes also updated to clarify that CYA should be added after shock is complete, not during.
Build 887062329v1.142026-06-17 17:47:40
What's New in v1.14
Smarter recommendations — Fixed several cases where the app showed conflicting or redundant advice: shocking no longer generates a separate "add chlorine" step, and the app won't tell you to stop adding chlorine while also telling you to shock. When both pH and alkalinity need acid, the cards now explain that the pH dose also lowers TA — add one at a time and retest. When both CYA and calcium hardness need a drain, both cards flag it so you can do a single combined drain.
Reminder fix — Weekly and custom reminders no longer reset their countdown every time you open the app. Reminders now fire reliably on schedule.
SWG salt range updated — The target range for saltwater pools has been widened to 2,700–4,000 ppm, better reflecting real-world SWG operating ranges.
More context in the log form — Tap any ⓘ icon next to a field while logging a reading to learn what that parameter means and why it matters. New quick-reference cards for beginners and dose calculators added to the Reference tab.
Build 886806696v1.12.82026-06-11 17:14:48
Bug Fixes
•Reminders now fire correctly. Notifications were being cancelled and rescheduled every time the app opened, resetting the countdown. Fixed — existing timers are preserved across app launches.
• Improved chemical dose accuracy. Dosing recommendations for muriatic acid, baking soda, CYA stabilizer, and pool salt have been recalibrated. If previous doses felt off, retesting after adding chemicals remains the best practice.
Build 886678412v1.12.62026-06-09 16:35:04
Fixed an issue where SWG (salt water generator) pool tips were appearing for non-SWG pools. Recommendations and trend insights that reference electrolysis and pH drift are now only shown when your pool is configured as a salt system in Settings.
Build 886593986v1.12.42026-06-06 16:17:16
Fixed reminder notifications (inventory, SWG cell, filter) that were not firing due to timers resetting on every app launch. Also fixed the water test reminder re-enabling itself after logging a reading.
Fixed FC recommendations now correctly scale thresholds to your CYA level — pools with higher stabilizer were seeing inaccurate sanitizer minimums and swim-safe guidance.
Build 886512479v1.12.12026-06-04 22:49:02
Tap ⓘ on any recommendation card to read a plain-language article about the chemistry behind it. Shock and Boost chlorine recommendations now show a starting-dose calculation so you know exactly where to begin.
Build 886063908v1.122026-05-25 00:08:11
Fixed recommendation order so CYA always shows before chlorine when both are low
UI fix for long recommendation cards on smaller iPhones
Cleaner upgrade prompts that show exactly what each Pro feature unlocks
Reminder: Pro is a one-time $4.99 purchase, no subscription
Build 885913555v1.10.12026-05-20 23:18:44
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.
Build 885759653v1.102026-05-17 21:00:09
Bug fixes and improvements:
• Fixed dosing recommendation ordering, CYA is now correctly prioritized before chlorine when both need attention
• Fixed text overflow in dosing recommendation tiles on smaller screens
• Fixed alert bar text layout breaking into columns on the Log screen
Build 885583270v1.82026-05-12 21:21:03
Chlorine targets now follow the FC/CYA relationship with climate-adjusted ranges. Shock & Maintain recommendations use accurate breakpoint chlorination levels. Added trichlor CYA buildup warnings.
Build 885339977v1.7.12026-05-06 20:57:57
Updated App Store Listing
Build 885195743v1.72026-05-03 01:58:04
1. Edit existing readings — users can now modify previously saved readings
2. Health score chart — visual chart tracking health score over time
3. Chart gap interpolation — smoother handling of gaps in chart data
4. Combined Chlorine (CC) input field — new field in the reading form
5. Chlorine auto-calculation — auto-computes CC from TC and FC
6. Dependency warnings on save — alerts when related values are missing or inconsistent
Build 885098469v1.4.12026-04-30 03:01:54
Updated screenshots, description, and privacy policy link. No app changes.
Build 885129376v1.62026-04-30 21:14:30
Combined Chlorine (CC) field — Enter CC directly from your DPD test, or enter TC from a pool store report. The app auto-calculates the other.
Smarter save warnings — The app now alerts you when missing fields (like CYA) could affect your dosing recommendations, with the option to go back and enter them.
Build 884736773v1.42026-04-29 19:39:29
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| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
| US | en-US | Free | 3 | 5.0 | 1.18 |
Change log 20 changes · US
✎
releaseNotes updated
• Tasks tab — new equipment maintenance tracker with due dates, overdue alerts, and a red dot badge when something needs attention. Tracks skimmer, pump basket,
✎
description updated
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
✎
subtitle updated
Pool Calculator & Tracker
✎
name updated
PoolChem Tracker
◆
Version 1.18 released
• 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
◆
Version 1.16 released
Log form redesigned. The entry form is now split into two labeled sections. "Readings for Calculations & Recommendations" groups the parameters that drive your health score, LSI, and dosing advice (Temp, FC, TC, pH, TA, CH, CYA, Salt). "Tr
◆
Version 1.14 released
What's New in v1.14
Smarter recommendations — Fixed several cases where the app showed conflicting or redundant advice: shocking no longer generates a separate "add chlorine" step, and the app won't tell you to stop adding chlorine while a
◆
Version 1.12.8 released
Bug Fixes
•Reminders now fire correctly. Notifications were being cancelled and rescheduled every time the app opened, resetting the countdown. Fixed — existing timers are preserved across app launches.
• Improved chemical dose accuracy.
◆
Version 1.12.6 released
Fixed an issue where SWG (salt water generator) pool tips were appearing for non-SWG pools. Recommendations and trend insights that reference electrolysis and pH drift are now only shown when your pool is configured as a salt system in Sett
◆
Version 1.12.4 released
Fixed reminder notifications (inventory, SWG cell, filter) that were not firing due to timers resetting on every app launch. Also fixed the water test reminder re-enabling itself after logging a reading.
Fixed FC recommendations now corre
◆
Version 1.12.1 released
Tap ⓘ on any recommendation card to read a plain-language article about the chemistry behind it. Shock and Boost chlorine recommendations now show a starting-dose calculation so you know exactly where to begin.
◆
Version 1.12 released
Fixed recommendation order so CYA always shows before chlorine when both are low
UI fix for long recommendation cards on smaller iPhones
Cleaner upgrade prompts that show exactly what each Pro feature unlocks
Reminder: Pro is a one-time $4
◆
Version 1.10.1 released
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
◆
Version 1.10 released
Bug fixes and improvements:
• Fixed dosing recommendation ordering, CYA is now correctly prioritized before chlorine when both need attention
• Fixed text overflow in dosing recommendation tiles on smaller screens
• Fixed alert bar
◆
Version 1.8 released
Chlorine targets now follow the FC/CYA relationship with climate-adjusted ranges. Shock & Maintain recommendations use accurate breakpoint chlorination levels. Added trichlor CYA buildup warnings.
◆
Version 1.7.1 released
Updated App Store Listing
◆
Version 1.7 released
1. Edit existing readings — users can now modify previously saved readings
2. Health score chart — visual chart tracking health score over time
3. Chart gap interpolation — smoother handling of gaps in chart data
4. Combined Chlorine (CC) i
◆
Version 1.6 released
Combined Chlorine (CC) field — Enter CC directly from your DPD test, or enter TC from a pool store report. The app auto-calculates the other.
Smarter save warnings — The app now alerts you when missing fields (like CYA) could affect your do
◆
Version 1.4.1 released
Updated screenshots, description, and privacy policy link. No app changes.
◆
Version 1.4 released