# HVAC Toolkit Ultimate vs AirPro

The clearest difference is price: AirPro at Free against HVAC Toolkit Ultimate's $59.99. AirPro also leads on rating (5.0 vs 3.0) and update cadence (every 4 days vs every 6 months). HVAC Toolkit Ultimate's advantage is in-app purchases (none vs 2) and ads (none vs shown). On ratings volume and device support there is nothing between them.

AirPro is free to download; HVAC Toolkit Ultimate costs $59.99 up front. AirPro sells 2 in-app purchases, starting at $7.99 per month. HVAC Toolkit Ultimate asks for nothing beyond the download.

AirPro holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively.

HVAC Toolkit Ultimate ships an update every 6 months, AirPro every 4 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HVAC Toolkit Ultimate | AirPro |
| --- | --- | --- |
| Price | $59.99 | **Free** |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/hvac-toolkit-ultimate/id391408247/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/airpro-btu-calculator/id6470185437/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 59 MB | 18 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Igor Ilijovski](https://appshunter.io/developer/1492982127) |

## What reviewers say

### HVAC Toolkit Ultimate

[App page](https://appshunter.io/ios/app/hvac-toolkit-ultimate/id391408247)

This comprehensive application offers a suite of tools for HVAC professionals, including load calculations, equipment tracking, refrigerant charts, duct and pipe sizing, and psychrometric analysis. It consolidates multiple functionalities into a single, powerful utility for field and office use.

**Highlights:** Residential load calculations, Equipment nameplate data tracking, Refrigerant pressure-temperature charts, Superheat and subcool calculations, Duct and pipe sizing analysis, Psychrometric calculations, Steam table property calculations

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

**In-app purchases:** none


### AirPro

[App page](https://appshunter.io/ios/app/airpro-btu-calculator/id6470185437)

This tool helps you calculate the right size for air conditioners, heat pumps, and furnaces. It provides detailed analysis of heating and cooling costs, energy consumption, and temperature data. You can also evaluate domestic hot water needs and financial aspects like payback periods.

**Highlights:** BTU estimation for HVAC systems, Monthly heating and cooling cost calculation, Energy consumption and temperature analysis, Domestic hot water needs evaluation, Financial analysis including payback periods, Data export to CSV and PDF reports

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AirPro Premium - Monthly | $7.99 | per month |
| AirPro Premium - Annual | $29.99 | per year |


## Frequently asked questions

### Is HVAC Toolkit Ultimate free?

HVAC Toolkit Ultimate costs $59.99, with no in-app purchases.

### Is AirPro free?

AirPro is free to download, with in-app purchases available.

### Which has better reviews, HVAC Toolkit Ultimate or AirPro?

AirPro is rated higher. HVAC Toolkit Ultimate averages 3.0 out of 5 from 4 ratings, while AirPro averages 5.0 from 5 ratings.

### Do HVAC Toolkit Ultimate or AirPro have ads?

AirPro shows ads; HVAC Toolkit Ultimate does not.

### Which is updated more often, HVAC Toolkit Ultimate or AirPro?

HVAC Toolkit Ultimate ships an update every 6 months, and AirPro every 4 days. Most recently, HVAC Toolkit Ultimate was updated on November 1, 2026 and AirPro on November 3, 2026.

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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.*