# Pool Math by TroubleFreePool — Easy pool care and maintenance

> Pool water chemistry calculator and maintenance tracker. (iPhone/iPad app by TroubleFreePool.)

- Source: https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359 (this page in markdown: same URL + `.md`)
- Developer: [TroubleFreePool](https://appshunter.io/developer/1228819358)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 3.68/5 from 272 App Store ratings · 123 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 314 MB
- Languages: English
- Released: 2017-06-16
- Data updated: 2026-08-25
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359/reviews.md

## What is Pool Math by TroubleFreePool?

PoolMath makes swimming pool care, maintenance and management easy by tracking chlorine, pH, alkalinity and other levels to help calculate how much salt, bleach and other chemicals to add.  Keep swimming in your TroubleFreePool with Pool Math.

Crystal clear algae free pool water is what Trouble Free Pool Math is committed to.  Pool Math performs all the calculations you need to keep your chlorine, pH, calcium, alkalinity, and stabilizer levels balanced.  

Why choose Pool Math over the others?

Other apps claim to make testing easy by using test strips and your phone's camera.  Unfortunately, this is simply too good to be true.  Test strips are notoriously inaccurate and end up costing you much more money in both chemicals and the tests themselves in the long run.  Trouble Free Pool believes using a proper test kit is much easier, effective, and economical in the long run.

By following these calculations the pool owner achieves and maintains crystal clear water without reliance on the often unproductive advice and unneeded expense from pool stores.

Pool Math's great features include:
  • Calculators for pH, Free Chlorine, Calcium Hardness, Salt, Total Alkalinity, Calcium Hardness, Borates, CSI
  • Track Maintenance: Backwashing, Vacuuming, Filter Cleaning, Filter Pressure, SWG Cell %, Flow Rate
  • Track Chemical Additions
  • Track Weather conditions with your logs
  • Calculate the Effects of Adding chemicals to your pool
  • Bleach Price Calculator - Find the best deals on bleach easily
  • Summary page to see an overview of test results and chemical additions
  • Data backup / Export

Premium Subscribers get access to these additional features:
  • Unlimited Test Log History Storage
  • Maintenance Reminders
  • Cloud Sync/Backup
  • Sync across multiple devices
  • Unlimited Pool / Spa Configurations
  • Test Log CSV Import / Export

Pool Math Premium Subscription details:
  • Auto-renewable subscription
  • 1 year for $7.99 USD
  • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration of 1 year) unless auto-renew is turned off at least 24 hours before the end of the current period.
  • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase.
  • Privacy Policy & Terms of Use: http://poolmathapp.com/privacy/

## Key features

- Chemical level calculators (pH, Chlorine, Alkalinity, etc.)
- Track pool maintenance tasks
- Log chemical additions
- Weather condition tracking
- Chemical addition effect calculations
- Bleach price comparison
- Data backup and export

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pool Math Premium Subscription | $7.99 | per year |


## What do users think of Pool Math by TroubleFreePool?

Overall sentiment: positive

**Pros**

- 💎 Excellent for maintaining a clean, balanced pool
- 🔍 Comprehensive tracking of test results and chemical additions
- 🧠 Helpful recommendations for chemical adjustments
- ⚙️ Useful features like SLAM mode and timeline
- 🤖 Automatic weather data logging

**Cons**

- 🐛 Issues with data syncing and backup
- 🤔 Unintuitive interface and navigation
- 💰 Subscription model and lack of one-time purchase
- 🚫 Limited support for non-chlorine sanitizers and spa-specific options
- 🔄 Bugs with chemical addition logging and target value retention

**Commonly reported bugs**

- Subscription issues and inability to restore purchases
- App crashes and freezes on certain actions
- Incorrect chemical recommendations and calculations
- Disappearing historical data after updates

**Most requested features**

- Custom target ranges and alerts
- Ability to log non-standard chemical additions
- Export options for data analysis
- Apple Watch integration
- Improved user guidance and on-boarding

## Recent user reviews (10 of 123)

All indexed reviews: https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359/reviews.md

### 1/5 — Desktop version is better

*2026-07-10, version 512*

For whatever reason, this does not give the same recommendations as the desk top application. Desktop app said 56oz of autistic acid. The app said 8 oz was needed. Follows the app and needless to say….needed 56 ounces 🤦🏻‍♀️

### 1/5 — Pointless

*2026-07-02, version 512*

App is completely pointless. It will not log anything, even if I lie to it and tell it added something, it does nothing. Every category says “no test logs”.

### 4/5 — Good but Room for Improvement

*2026-06-30, version 512*

Overall, I like what this app does and I think it is definitely worth the cost of the subscription. I love having this app to keep track of pool test results and to easily calculate chemical additions needed. Love that it is designed to help with SLAM, too. 

My two requests are: 
1. Please add limited account sharing between (at least) two people. I want to be able to “share” my pool with my husband so we can both **add** and view the data for our mutual pool. It’s so annoying that only one of us can “own” the pool data 
2. Graphs. Please, please, please add the ability to view data as graphs over time. Seeing a monthly graph and an annual graph would be so interesting and helpful.

Anyway, I like and appreciate the app, hope it will continue to improve

### 3/5 — At least it works on the iPhone

*2026-06-29, version 512*

I have been using this app on my iPad for years. And it has worked very well with most of their enhancements being pretty useful.

About two months it just stopped being functional on the iPad. The moment you tap any field and enter anything it freezes and is just utter garbage.

Fortunately it still works perfectly on my iPhone so I have had to shift over to that which is why I gave it three stars.

### 1/5 — App ok-IMPOSSIBLE TO CANCEL! 🤬

*2026-06-15, version 512*

Way too hard to cancel. It’s been years and still being charged.

### 4/5 — Kinda Glitchy

*2026-06-10, version 512*

Since taking over my pool maintenance, this app has been beyond helpful. My pool tech was clearly doing bare minimums. 

However, app is a little glitchy. 

I have an SWG and I can’t get a recommendation on chlorine treatment other than running my chlorination at a higher %. Troubleshooting says to toggle back to free chlorine, but that doesn’t work and it’s annoying. 

Also, when a reading is within a target range (like calcium hardness) it shows I’m outside of the actual number I may have provided. Either let us put in ranges or respect the ranges provided!

### 1/5 — Sure wants me to buy premium

*2026-06-02, version 512*

If I try to do ANYTHING it tells me to upgrade to premium. It let me enter exactly one pool test result. Now?  Constant prompts. Looked everywhere, as I assumed the free version would be one pool, one test result per day. But apparently it’s one pool, one test result ever?

### 1/5 — Cheap, wrong, misleading

*2026-05-06, version 512*

This app is literally wrong in some cases and misleading in others. Best avoid if you care about your pool!

### 5/5 — Test Logs & Recommendations at your fingertips!

*2026-04-21, version 511*

The title says it all; test the water, record results, follow the suggested chemical additions. Buh bye pool store testing!!

### 2/5 — The app seems handy, but lacks features and support

*2025-11-16, version 511*

The app seems very handy in helping you figure out what chemicals to add to keep your pool, clean and beautiful but my biggest draw to the app was the ability to set reminders for things like backwashing and filter clean out. The issue is I don’t receive any notifications regarding these reminders. I checked both the app settings in iOS and in the app itself and don’t see any notification options. I’m not sure why it’s called a reminder if it doesn’t remind you to do these tasks or that these tasks are overdue. I tried to reach out to support via the App Store listing but get an error message saying I’m not allowed to access their support portal. If I can receive push notifications regarding these types of routine maintenance task, this would be five star app.

## Frequently asked questions about Pool Math by TroubleFreePool

### What does Pool Math do?

Pool Math helps you easily manage your swimming pool's care and maintenance. It tracks essential water levels like chlorine, pH, and alkalinity, and calculates the exact amounts of chemicals you need to add to keep your water clear and algae-free.

### What are the key features of Pool Math?

Key features include calculators for various chemical levels such as pH, Free Chlorine, and Calcium Hardness. It also allows you to track maintenance tasks like backwashing and filter cleaning, log chemical additions, and even compare bleach prices.

### How much does Pool Math cost?

The app offers a freemium model. Basic features are available for free, while a premium subscription unlocks additional benefits like unlimited test history, maintenance reminders, cloud sync, and multi-device support. The premium subscription is $7.99 USD per year.

### What are the benefits of using Pool Math over test strips?

The app emphasizes that test strips can be inaccurate and lead to overspending on chemicals and tests. By using a proper test kit and the app's precise calculations, users can achieve and maintain crystal clear water more effectively and economically.

### Who is Pool Math designed for?

This app is designed for swimming pool owners who want a straightforward and cost-effective method for managing their pool's water chemistry and maintenance. It aims to provide accurate calculations and reduce reliance on potentially unhelpful advice from pool stores.

## Version history (last 5 releases)

### 512 — 2026-05-03

• NEW: Track swimmer loads as logs on your timeline
• NEW: Siri Shortcuts for adding test logs and chemical logs
• Visual polish, including Liquid Glass support
• General stability improvements and bug fixes

### 511 — 2025-08-20

You can now filter the timeline based on log type and note text!  There's also a slightly updated look and feel, and of course several bugs were fixed!

### 510 — 2024-08-01

- Tweaked more font sizes, styles and colors
- Stability improvements and bug fixes

### 509 — 2024-07-14

- Fixed incorrect degrees symbol in some places
- Added Salt Bag size option in Salt advice page
- Dark/Light mode theme changes are slightly faster on app startup

### 508 — 2024-07-14

- Dates are more human readable again "eg: 2 days ago"
- Made some text colors more legible, less colorful
- Font sizes optimized
- Summary page shows added amounts again instead of just PPM
- Target range is visible on overview tiles again
- Targets and other preferences are better remembered on many pages
- Text warnings are back on the home screen again!
- More weather details can be seen in log details
- Font scaling can be changed in the app
- Added "Past 30 days" option to summary page
- Added Cal-Hypo 78
- Fixed a number of bugs that led to crashes

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*