# Pool Chemical Dose Calculator — user reviews

> 8 indexed App Store user reviews of Pool Chemical Dose Calculator by Hasa Inc., rated 2.90/5 from 13 ratings.

- Source: https://appshunter.io/ios/app/pool-chemical-dose-calculator/id1148385163/reviews
- App overview in markdown: https://appshunter.io/ios/app/pool-chemical-dose-calculator/id1148385163.md
- Rating breakdown: 5★ 5 · 4★ 1 · 3★ 0 · 2★ 2 · 1★ 5

## Most critical reviews (8 lowest-rated)

### 1/5 — App crashes No support

*2023-05-23*

This app was great and a very valuable tool. But for nearly two years there has been no update for iOS so it doesn’t work. 
Please get it back up and running then it will easily be a 5 star app.

### 1/5 — Just a calculator

*2017-06-04*

App provides no recommendations or shift from current levels.  Must have specific knowledge of what differential level you wish to achieve. 

Does not provide any logging or graphing of existing levels for ongoing maintenance. Way too much money for a basic calculator.

### 1/5 — Useless

*2016-11-07*

Doesn't ask for your current level.

### 2/5 — No options for pH change

*2017-10-23*

No options for calculations to decrease or increase pH. Huge downfall of this app, in my opinion.

### 4/5 — Not updated since 2017

*2023-01-18*

Lowery, I use your app everyday. Love the simplicity of it. Professional since 1999. But if I update my phone to ios16 I know it will not work after that. Please update I don’t like all the other apps there too complicated. I would be happy to pay for it or subscribe.

### 5/5 — Some how when I select the item the app closes and i keep trying and still closing

*2022-10-24*

Thanks it used to work fine pleas help

### 5/5 — All you need

*2022-04-06*

This app is all you need for acid dosing your pool or spa. Disregard the other negative reviews. The creator of this app is Bob Lowry and his team. Bob has been in the water chemistry and chemical business almost 50 years. He wrote the books and gave the knowledge the modern and old school pool service techs used and use still today. Extensive research has gone into making this app. You will need to know basic water chemistry. If you want an app for all other chemicals. Download the other app “pool chem dose calculator.” I service pools and I highly recommend using these apps.

### 5/5 — Fantastic buy

*2020-10-23*

Great app if using borates for adjusting alk!

---

*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 2026-08-24.*