# HVAC Formulas Tech Calculator vs HVAC Hero

The clearest difference is rating: HVAC Hero at 4.7 against HVAC Formulas Tech Calculator's 3.7. HVAC Formulas Tech Calculator's advantage is update cadence (every 4 days vs monthly) and ratings volume (15 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HVAC Hero holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: HVAC Formulas Tech Calculator has 15 ratings behind it against 3, so its average is the more settled of the two.

HVAC Formulas Tech Calculator ships an update every 4 days, HVAC Hero monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | HVAC Formulas Tech Calculator | HVAC Hero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (15 ratings)](https://appshunter.io/ios/app/hvac-formulas-tech-calculator/id1551053530/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/hvac-hero/id6480479348/reviews)** |
| Number of ratings | **15** | 3 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | Free | Free |
| Size | 1 MB | 68 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sergio Bost](https://appshunter.io/developer/1550113896) | [HVAC Hero](https://appshunter.io/developer/1815876091) |

## What reviewers say

### HVAC Formulas Tech Calculator

[App page](https://appshunter.io/ios/app/hvac-formulas-tech-calculator/id1551053530)

This app provides a comprehensive collection of HVAC formulas for technicians. It simplifies complex calculations for heating, ventilation, and air conditioning systems, saving time and effort compared to manual methods or general calculators. Designed by an industry professional, it offers an easy-to-use interface for quick access to essential formulas.

**Highlights:** Comprehensive HVAC formula collection, Formulas for air, fan laws, and heat, Simplified calculations for technicians, Easy-to-use interface, Designed by an HVAC technician, Saves time searching the web

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

**In-app purchases:** none


### HVAC Hero

[App page](https://appshunter.io/ios/app/hvac-hero/id6480479348)

This app provides HVAC professionals with AI-powered instant answers, a comprehensive resource library, and NFC tag scanning for quick access to manuals and warranty information. It aims to enhance efficiency and accuracy in field service.

**Highlights:** AI Chatbot for technical questions, Comprehensive HVAC resource library, NFC tag scanning for unit information, Manual search for troubleshooting, Up-to-date information database, Intuitive interface for technicians

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Formulas Tech Calculator free?

HVAC Formulas Tech Calculator is free to download, with no in-app purchases.

### Is HVAC Hero free?

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

### Which has better reviews, HVAC Formulas Tech Calculator or HVAC Hero?

HVAC Hero is rated higher. HVAC Formulas Tech Calculator averages 3.7 out of 5 from 15 ratings, while HVAC Hero averages 4.7 from 3 ratings.

### Do HVAC Formulas Tech Calculator or HVAC Hero have ads?

Neither HVAC Formulas Tech Calculator nor HVAC Hero shows ads.

### Which is updated more often, HVAC Formulas Tech Calculator or HVAC Hero?

HVAC Formulas Tech Calculator ships an update every 4 days, and HVAC Hero monthly. Most recently, HVAC Formulas Tech Calculator was updated on October 25, 2026 and HVAC Hero on October 24, 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.*