# Pool Doctor

> Pool chemical calculator and maintenance guide for professionals and enthusiasts. (iPhone/iPad app by Gazzini Ventures.)

- Source: https://appshunter.io/ios/app/pool-doctor/id375459618 (this page in markdown: same URL + `.md`)
- Developer: [Gazzini Ventures](https://appshunter.io/developer/1503581197)
- Category: Utilities, Productivity
- Price: $19.99
- Rating: 4.40/5 from 134 App Store ratings · 90 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 7 MB
- Languages: American English
- Released: 2010-06-22
- Data updated: 2026-09-07
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/pool-doctor/id375459618/reviews.md

## What is Pool Doctor?

Thousands of professionals across the world already use Pool Doctor to keep their pools blue... you should too!

This app is not for total beginners -- It is a powerful digital tool for professionals or enthusiasts.

But don't worry! Instructions are constantly scrolling across the screen. Just enter whatever chemical readings you prefer using any test kit you own, and Pool Doctor will tell you exactly what chemicals to put into your pool and why.

With Pool Doctor, you can adjust the chlorine, bromine, salt, pH, total alkalinity, calcium hardness, and even the cyanuric acid levels in all of your pools. You can even configure the ideal ranges and chemicals used to treat the pools (see screenshots).

Pool Doctor gives all results and explanations in pounds, ounces, grams, kilograms, liters, gallons, or even in the number of scoops (you can enter custom scoop sizes); and changing units is as easy as pressing a button! This app supports regular, salt-water, or even bromine pools.

Pool Doctor now saves basic reading and treatment records for all of your pools!

Pool Doctor only shows you readings that apply to your pool type, so there is no unnecessary confusion!

Pool Doctor will now calculate the Langelier Index automatically if you take all of the required readings!

Pool Doctor now includes a shock calculator! Just enter the free and total chlorine levels, and Pool Doctor will automatically calculate how much of your preferred shock chemical is necessary to bring your pool to breakpoint chlorination.

## Key features

- Chemical level adjustment (chlorine, pH, alkalinity, etc.)
- Supports regular, salt-water, and bromine pools
- Multiple unit of measurement options
- Customizable ideal ranges and chemicals
- Saves reading and treatment records
- Langelier Index calculation
- Shock calculator

## What do users think of Pool Doctor?

Overall sentiment: positive

**Pros**

- 👍 Easy to use and intuitive interface
- 🎯 Accurate chemical calculations and recommendations
- 💡 Customizable pool parameters and chemical selection
- 📊 Helpful for pool maintenance beginners
- 🔄 Multiple unit conversions (lbs, oz, kg, metric)
- 📝 Ability to log and track chemical treatments
- 🎨 Clear layout and well-organized design
- ⚡ Quick calculation results
- 🌟 Excellent developer support and responsiveness
- 💰 Good value for money
- 🏊 Works well for various pool types

**Cons**

- 🐛 App crashes frequently
- ❌ Email functionality doesn't work
- ⚠️ Inaccurate recommendations for some pool types
- 🔧 Settings don't persist or sync across devices
- 💸 Price increased from free to $20
- 🚫 Limited chemical options available
- 📱 Poor keyboard handling and input controls
- 🔌 Requires internet connection unnecessarily
- ❓ Unclear documentation and support
- 🎯 One-size-fits-all approach ignores pool-specific needs

**Commonly reported bugs**

- App crashes after entering readings
- Phone keyboard won't close, preventing navigation
- Entered values change automatically (pH decreases, chlorine increases)
- Chemical settings don't save or remember user preferences
- Recommendations ignore user-specified chemical concentrations
- Metric calculations don't work properly
- App requires internet connection despite being offline-capable
- Support page/links no longer available
- Inconsistent shock chemical recommendations despite selection changes

**Most requested features**

- Customizable input field order to match test kit order
- Support for Baquacil pool products
- Cyanuric acid reading support
- Ability to select specific chemical types (liquid vs powdered chlorine)
- Salt level adjustment based on salt water generator (SWG) ranges
- Support for additional chemicals like Borax for pH adjustment
- Water temperature and wind data tracking
- Graphing and historical data visualization
- Multi-user sync for shared pool maintenance
- Pool volume estimator tool
- Support for hot tubs and spas
- Metric-only interface for non-US users
- More detailed information on calcium hardness and other parameters

## Recent user reviews (10 of 90)

All indexed reviews: https://appshunter.io/ios/app/pool-doctor/id375459618/reviews.md

### 4/5 — Email doesn’t work

*2026-05-16, version 3.51*

Takes the guess work out. Thank you! But email option doesn’t work.

### 1/5 — Do not purchase

*2025-07-08, version 3.51*

This was an absolute waste of money. There are free apps that give more information than this.

### 1/5 — Not for Baquacil pool

*2025-07-02, version 3.51*

Unfortunately I purchased the app and didn’t realize it does not work for pools using Baquacil products

### 5/5 — Great App

*2024-06-15, version 3.51*

Great for basic needs of daily pool management.

### 5/5 — Perfect pool chemistry

*2023-08-13, version 3.51*

My pool is easy to keep perfect with this app and a testing kit

### 2/5 — Need to be able to adjust salinity based on swg

*2023-07-08, version 3.51*

Used this on my pool for the first time today and it says to lower my salt level.  My swg salinity range is 3500 - 4500.  It’s at 4500 so no need to lower it.  There is no one size fits all for salt level

### 3/5 — Good but not

*2023-05-28, version 3.51*

it’s now $20 but it used too be free. it doesn’t even have cyanuric acid as a reading

### 5/5 — Accurate

*2023-04-26, version 3.51*

When I compare the chemical recommendations between Pool Doctor and the store I take samples to test, Pool Doctor matches their recommendations closer than any other pool app I’ve tried. I wanted to compare apps to store tests before I started testing myself and adding chemicals. 

Great app!

### 4/5 — Improve App

*2023-04-25, version 3.51*

Should be able to customize the order of the readings input page from top to bottom. If i want pH first then i should be able to move it there. Be nice to mirroe the test strip or test equip in the same order

### 5/5 — Best Pool Operator App!!

*2023-04-24, version 3.51*

Best pool chemical calculator on the App Store hands down.

## Frequently asked questions about Pool Doctor

### What does the Pool Doctor app do?

The Pool Doctor app is a digital tool designed for pool professionals and enthusiasts. It helps users maintain their pools by calculating the exact chemicals needed based on user-inputted chemical readings. It provides explanations for the recommended treatments and supports various pool types and units of measurement.

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

Key features include the ability to adjust chlorine, bromine, salt, pH, total alkalinity, calcium hardness, and cyanuric acid levels. It supports multiple units of measurement (pounds, ounces, gallons, liters, etc.), allows customization of ideal ranges and chemicals, saves treatment records, calculates the Langelier Index, and includes a shock calculator.

### Is Pool Doctor free to use?

Based on the provided information, Pool Doctor is a paid application. It does not have in-app purchases or advertisements, indicating a one-time purchase model for access to its full functionality.

### What types of pools does Pool Doctor support?

Pool Doctor supports a variety of pool types, including regular pools, salt-water pools, and bromine pools. The app intelligently displays only the readings and calculations relevant to the specific pool type configured by the user, preventing confusion.

### Who is the target audience for Pool Doctor?

This app is intended for pool professionals or enthusiasts who have some existing knowledge of pool maintenance. It is described as a powerful digital tool that goes beyond beginner-level guidance, offering detailed calculations and explanations for advanced pool care.

## Version history (last 5 releases)

### 3.51 — 2023-04-24

Includes support for Borax to raise the pH

Includes support for 68% calcium hypochlorite

### 3.5 — 2023-04-03

* Fixed some keyboard bugs:
  * When editing or adding a pool, the fields sometimes displayed behind the keyboard.
  * When changing target levels for the Free Chlorine, the fields were hard to see because of the keyboard.

* Adds pool-care instructions to home page.

### 3.4.2 — 2021-07-22

- We updated the pooldash link to open the App Store, not the website.
- We corrected a time issue.

### 3.4 — 2021-07-16

We made a small change to the database so it will be easier to support you in the future!

### 3.33 — 2019-11-13

Includes more dark-mode bug fixes, specifically on the chemical-selection screen (whoops!)

## Apps similar to Pool Doctor

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Pool Math by TroubleFreePool](https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359) | 3.7 (272) | Free | Utilities |
| [Pool Time ClearPool Expert™](https://appshunter.io/ios/app/pool-time-clearpool-expert/id1066930911) | 4.7 (5,257) | Free | Utilities |
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| [Livly Hub](https://appshunter.io/ios/app/livly-hub/id1464225200) | 4.7 (13) | Free | Utilities |
| [Miitems](https://appshunter.io/ios/app/miitems/id1464179200) | — | Free | Utilities |

## More apps by Gazzini Ventures

- [Pool Cloud](https://appshunter.io/ios/app/pool-cloud/id899283859)
- [Pooldash](https://appshunter.io/ios/app/pooldash/id1505607801)
- [Pool Care by Swim University](https://appshunter.io/ios/app/pool-care-by-swim-university/id6479329322)
- [Say the Sight Words](https://appshunter.io/ios/app/say-the-sight-words/id6798885805)

All apps by Gazzini Ventures: https://appshunter.io/developer/1503581197

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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 2026-09-07.*