# HVAC Toolkit Ultimate vs HVAC Toolkit Lite

The clearest difference is price: HVAC Toolkit Lite at Free against HVAC Toolkit Ultimate's $59.99. HVAC Toolkit Lite also leads on rating (5.0 vs 3.0) and update cadence (every 11 days vs every 6 months). HVAC Toolkit Ultimate's advantage is ratings volume (4 vs 1). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

HVAC Toolkit Lite is free to download; HVAC Toolkit Ultimate costs $59.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC Toolkit Lite holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

HVAC Toolkit Ultimate ships an update every 6 months, HVAC Toolkit Lite every 11 days. The most recent releases landed on October 12, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | HVAC Toolkit Ultimate | HVAC Toolkit Lite |
| --- | --- | --- |
| Price | $59.99 | **Free** |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/hvac-toolkit-ultimate/id391408247/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hvac-toolkit-lite/id1628371325/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 11 days** |
| Monetization | Paid | **Free** |
| Size | 59 MB | 61 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Mohamad Jaber](https://appshunter.io/developer/1623246777) |

## 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


### HVAC Toolkit Lite

[App page](https://appshunter.io/ios/app/hvac-toolkit-lite/id1628371325)

This tool assists HVAC engineers with design checks and quick calculations. It offers various tools for ducting friction loss, pipe sizing, ventilation, and heat load estimations, providing instructions and formulas for each calculation.

**Highlights:** Friction loss calculation, Pipe sizing, Ventilation calculations, Heat load estimation, Pump head calculation, Fan ESP calculation, Metric/Imperial units, English/Arabic language support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Toolkit Ultimate free?

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

### Is HVAC Toolkit Lite free?

HVAC Toolkit Lite is free to download, with no in-app purchases.

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

HVAC Toolkit Lite is rated higher. HVAC Toolkit Ultimate averages 3.0 out of 5 from 4 ratings, while HVAC Toolkit Lite averages 5.0 from 1 ratings.

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

Neither HVAC Toolkit Ultimate nor HVAC Toolkit Lite shows ads.

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

HVAC Toolkit Ultimate ships an update every 6 months, and HVAC Toolkit Lite every 11 days. Most recently, HVAC Toolkit Ultimate was updated on October 12, 2026 and HVAC Toolkit Lite on September 11, 2026.

---

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