# PoolCalc

> Pool water Langelier Saturation Index calculator with location and reading management. (iPhone/iPad app by Bonham Customs.)

- Source: https://appshunter.io/ios/app/poolcalc/id514707093 (this page in markdown: same URL + `.md`)
- Developer: [Bonham Customs](https://appshunter.io/developer/514707096)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.1 · 8 MB
- Languages: American English
- Released: 2012-04-04
- Data updated: 2026-06-05
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/poolcalc/id514707093/reviews.md

## What is PoolCalc?

This calculator helps you determine the scaling potential of your pool water by using the Langelier Saturation Index. 

Save and edit readings.
Save and edit locations.
Add notes to each reading.
Quick add button. Add readings to locations with a single tap.

If you are a pool professional then with a paid upgrade you will be able to save multiple locations for your pool route. 

I want to make this app something that you will use and see a benefit from. If there is something that you wish to see added please use the feedback form in the app and let me know!

## Key features

- Langelier Saturation Index calculation
- Save and edit readings
- Save and edit locations
- Add notes to readings
- Quick add readings to locations
- Paid upgrade for multiple location routes

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pool Professional Upgrade | $2.99 | one-time |


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/poolcalc/id514707093/reviews.md

### 1/5 — Lame

*2015-03-15, version 3.3*

This is just a half assed preview that has zero features. Waste of time

### 1/5 — Junk

*2013-05-12, version 3.1*

Junk.  What good is this?

### 5/5 — Great for me

*2012-10-16, version 2.6*

While I agree the ads get in the way, and the slider is useless, you can manually enter data using the keyboard, and the ability to calculate quickly on my phone is very valuable.  Considering its free, I like it a lot

### 1/5 — Very buggy

*2012-07-25, version 2.5.5*

This app is very buggy. The ad bar keeps jumping up and blocking important information on the screen. Can't view or edit the values. Worthless app. Not sure how anyone would "upgrade" to pro when the free version is so bad. Fix defects and try again :-)

### 2/5 — Input difficult

*2012-06-30, version 2.5*

I find the sliders used to enter data difficult to use. Something more like the interface Apple uses for the built-in apps or even just text boxes would be preferable. I also might prefer more precision for some parameters (pH) and maybe less for others (CH).  Also, the TDS input maxes out too low for pools using liquid chlorine  (Although TDS is not such a major factor in the calculation anyway - some calculators omit it entirely).

### 3/5 — It doesn't work properly, has potential though

*2012-06-28, version 2.5*

When you're trying to set some of the parameters, the slider never gives you the exact number, it keeps jumping around like crazy. This app does have some potential, if you fix this problem I believe that it would be useful, right now it's mostly frustrating.

## Frequently asked questions about PoolCalc

### What is PoolCalc used for?

PoolCalc is used to determine the scaling potential of your pool water by calculating the Langelier Saturation Index. It helps you manage your pool's water chemistry effectively.

### Can I save my pool readings with PoolCalc?

Yes, PoolCalc allows you to save and edit all your pool water readings. You can also save and edit specific locations for your readings and add notes to each entry.

### Is there a cost to use PoolCalc?

PoolCalc is free to download and use. However, there is a paid upgrade available for pool professionals that unlocks advanced features, such as saving multiple locations for pool routes.

### What devices does PoolCalc support?

PoolCalc is supported on iPhone and iPod devices. It is designed for iOS users who need a reliable pool water calculation tool.

### How often is PoolCalc updated?

The latest version of PoolCalc is 3.3, which was last updated on March 7, 2015. While updates have been infrequent, the core functionality remains stable for its intended purpose.

### What is the age rating for PoolCalc?

PoolCalc has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### Does PoolCalc have ads?

No, PoolCalc does not contain advertisements. The app is ad-free, ensuring an uninterrupted user experience.

### What do users think of PoolCalc?

Based on the available data, PoolCalc has received one rating of 1.0 stars. User feedback is limited, but this initial rating suggests potential areas for improvement.

## Version history (last 5 releases)

### 3.3 — 2015-03-07

This app has been updated by Apple to display the Apple Watch app icon.

New layout and updated for iOS 8

### 3.2 — 2013-08-17

iOS 6 support.
Minor bug fixes

### 3.1 — 2013-04-15

Added notes to readings.
Minor bug fixes.

### 3.0 — 2013-01-30

Major update. 
Graphics completely redone. 
You can now edit locations and readings. 
Improved entering data.
Bug fixes

### 2.6 — 2012-10-01

iOS 6 compatibility updates
iPhone 5 layout adjustments
Bug fixes for stability

## Apps similar to PoolCalc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Pro Series Pool & Spa](https://appshunter.io/ios/app/pro-series-pool-and-spa/id1500461028) | 4.3 (9) | Free | Utilities |
| [Pooldash](https://appshunter.io/ios/app/pooldash/id1505607801) | 4.6 (11) | $19.99 | Utilities |
| [Pool Math by TroubleFreePool](https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359) | 3.7 (272) | Free | Utilities |
| [Swimming Pool Calculator](https://appshunter.io/ios/app/swimming-pool-calculator/id1591745680) | 3.9 (36) | $4.99 | Utilities |
| [Pool Chem Calculator](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222) | 3.5 (17) | Free | Utilities |
| [Pool Doctor](https://appshunter.io/ios/app/pool-doctor/id375459618) | 4.4 (130) | $19.99 | Utilities |

## Related topics

[bonham customs](https://appshunter.io/ios/topics/bonham-customs)

---

*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 2026-06-05.*