# HVAC PT Chart — user reviews

> 9 indexed App Store user reviews of HVAC PT Chart by Carmel Software Corporation, rated 4.00/5 from 8 ratings.

- Source: https://appshunter.io/ios/app/hvac-pt-chart/id508212589/reviews
- App overview in markdown: https://appshunter.io/ios/app/hvac-pt-chart/id508212589.md
- Rating breakdown: 5★ 4 · 4★ 1 · 3★ 2 · 2★ 1 · 1★ 0

## Most critical reviews (9 lowest-rated)

### 1/5 — Fail

*2012-10-21*

Don't believe "For a limited time only, this app is FREE".  The fee has been taken from me!!!  Unbelievable that Apple would allow blatant theft.

This app does provide a lot of useful info, however the font is tiny!  And this app does not have a side by side refrigerant comparison which is often needed when critical repair decisions have to be made.

The hunt continues for an app that fills the needs of this HVACR professional.

### 3/5 — Dark Mode

*2019-10-20*

The app is great, but it’s almost unusable if your phone or tablet is in dark mode. Hopefully there’s an update to address that issue soon.

### 3/5 — Doesn’t work in dark mode

*2019-10-15*

Good overall UI. Just doesn’t display text in dark mode on the iPhone XS Max

### 3/5 — Ui a little funny

*2013-01-19*

Have to agree, the refrig selection is spaced out bigger than needs be snd the data you need to read is shrunk a little. In the help there is mixed font sizes and no option to email devs.

For a self proclaimed big time computational programmers this app sure looks unpolished. And i wonder how their $50 and up apps look now... Its the small things that count.

### 4/5 — Pretty good but needs tweaking

*2012-06-20*

This PT chart app is probably the best on iTunes because it has every refrigerant on the planet, but the interface could be better. On my iPhone the refrigerant selection window takes up half the screen. That leaves a lot less space to view the temps and pressures I need. You guys need to shrink down the refrigerant selection window so it is easier to use the buttons and slider. Also it would free up space to make the readout windows a little bigger so it's easier to see the numbers. 

Other than that the app works great and is pretty accurate. The info is good, it just needs a better presentation.

### 5/5 — Love this app

*2021-09-30*

I use it multiple times per day out in the field. I like that it has so many refrigerants in the list and I can also email.

### 5/5 — Practical and useful

*2016-12-05*

Exactly what I needed. Free app but wouldn't have minded paying for it. Gets the job done. Simple to use. Great all around app

### 5/5 — Great app

*2014-09-11*

So easy to find pressure temp

### 5/5 — Help to much

*2014-04-20*

So faster to find pressure and temp.

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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 2026-08-27.*