# HVAC Calculator ProX vs MicButton

The clearest difference is price: MicButton at Free against HVAC Calculator ProX's $0.99. HVAC Calculator ProX's advantage is iOS requirement (18.4 vs 26.5). On ads, in-app purchases and device support there is nothing between them.

MicButton is free to download; HVAC Calculator ProX costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | HVAC Calculator ProX | MicButton |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 10 MB | 3 MB |
| Requires iOS | **18.4** | 26.5 |
| Devices | iPhone, iPad | **iPhone, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Grzegorz Rakoca](https://appshunter.io/developer/1778459428) | [nedrelow, LLC](https://appshunter.io/developer/474024242) |

## What reviewers say

### HVAC Calculator ProX

[App page](https://appshunter.io/ios/app/hvac-calculator-prox/id6746761599)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MicButton

[App page](https://appshunter.io/ios/app/micbutton/id6805187262)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Calculator ProX free?

HVAC Calculator ProX costs $0.99, with no in-app purchases.

### Is MicButton free?

MicButton is free to download, with no in-app purchases.

### Do HVAC Calculator ProX or MicButton have ads?

Neither HVAC Calculator ProX nor MicButton shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*