# HVAC Duct Size Calculator — user reviews

> 19 indexed App Store user reviews of HVAC Duct Size Calculator by Alan Cave, rated 5.00/5 from 1 ratings.

- Source: https://appshunter.io/ios/app/hvac-duct-size-calculator/id485800827/reviews
- App overview in markdown: https://appshunter.io/ios/app/hvac-duct-size-calculator/id485800827.md
- Rating breakdown: 5★ 1 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 0

## Newest reviews (2 of 19)

### 1/5 — HVAC tech

*2012-12-15, version 1.1*

Probably great for engineers but not very helpful for tradespeople.

### 1/5 — no metric

*2012-10-08*

no metric...

## Most critical reviews (10 lowest-rated)

### 1/5 — Please don’t waste your money

*2020-01-04*

Simply Rubbish 
I don’t know why apple let them sale this kind of apps in App Store

### 1/5 — Doesn’t Work On My iPhone 7

*2018-10-05*

For some reason the app doesn’t show all of it’s functions that are advertised. Pretty much useless on my iPhone 7

### 1/5 — Horrible app

*2016-06-28*

Do a favor to your self don't buy this app is just a waste of your time.

### 1/5 — Absolute ripoff

*2015-07-13*

Doesn't do anything. A useless toy

### 1/5 — Not worth the storage

*2015-06-12*

This app is so basic and so simple it is not worth taking up any storage on your device. Let alone actually paying for it.

### 1/5 — Tech

*2015-04-16*

Junk

### 1/5 — Junk

*2015-04-02*

Not what you think stick to the cardboard version you always used its way off     I give it half star

### 1/5 — Very Basic

*2014-09-25*

Doesn't allow you to enter a rectangular duct size, it does provide various sizes based on input criteria but that's not much help if you are working with already installed duct.

### 1/5 — Useless

*2014-03-29*

This app is another fail for the hvac apps

### 1/5 — Worst app ever

*2013-03-12*

There's only about ten duct sizes I just got robbed.

## Most praised reviews (7 highest-rated)

### 5/5 — Every Day Duct Sizing Tool

*2024-09-25*

I use this every day all day, no other duct calculator app compares to the simplicity and accuracy of this app.  I hope this never goes away…

### 5/5 — Good easy and ok

*2014-03-25*

Facile à utiliser

### 5/5 — Me. Chadwick 78

*2012-12-26*

Very accurate and helpful to use in the field, also saves time compared to the wheel.

### 5/5 — Awesome app!!

*2012-01-17*

Must have for out of the office. Great job. Really helpful.

### 4/5 — Excellent App for quick sizing

*2011-12-17*

Excellent for quick sizing and decision making, well worth the purchase. Only one constructive suggestion the ability to limit the list of rectangular sizes by aspect ratio 1:1, 3:1 , etc

### 3/5 — Tech man

*2013-01-11*

How do you determine between flex duct vs. hard pipe? This app needs lots of improvements. Good for a novice maybe. Should be able to select duct size (flex or hp ) and get aprox. Cfm based off length of run. Simplify your processes. 
Good start.

### 2/5 — More duct sizes, please?

*2012-04-20*

I wish there were more duct sizes to choose from or a way for the user to input the duct size.

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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 2026-08-15.*