# HVAC School vs HVAC 3D Design Learning Studio

The clearest difference is price: HVAC School at Free against HVAC 3D Design Learning Studio's $9.99. HVAC School also leads on iOS requirement (13.4 vs 16.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

HVAC School is free to download; HVAC 3D Design Learning Studio costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC School ships an update every 5 weeks, HVAC 3D Design Learning Studio every 3 weeks. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | HVAC School | HVAC 3D Design Learning Studio |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.8 (85 ratings)](https://appshunter.io/ios/app/hvac-school/id1436085954/reviews)** | — |
| Number of ratings | **85** | — |
| Positive reviews | 82.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 30 MB | 207 MB |
| Requires iOS | **13.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Kalos Services Inc.](https://appshunter.io/developer/1435107751) | [Yuhsiu Lai](https://appshunter.io/developer/433114647) |

## What reviewers say

### HVAC School

[App page](https://appshunter.io/ios/app/hvac-school/id1436085954)

This app serves as a comprehensive resource for HVAC technicians, offering a podcast, tech tip articles, and interactive calculators. It aims to enhance knowledge of HVAC theory, industry updates, and essential mathematics for both current and aspiring professionals.

**Highlights:** HVAC School podcast episodes, Tech tip articles by professionals, Interactive HVAC equation calculators, Industry knowledge and theory, Up-to-date industry information

**Features:** macOS Compatibility

**In-app purchases:** none


### HVAC 3D Design Learning Studio

[App page](https://appshunter.io/ios/app/hvac-3d-design-learning-studio/id6766627551)

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC School free?

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

### Is HVAC 3D Design Learning Studio free?

HVAC 3D Design Learning Studio costs $9.99, with no in-app purchases.

### Do HVAC School or HVAC 3D Design Learning Studio have ads?

Neither HVAC School nor HVAC 3D Design Learning Studio shows ads.

### Which is updated more often, HVAC School or HVAC 3D Design Learning Studio?

HVAC School ships an update every 5 weeks, and HVAC 3D Design Learning Studio every 3 weeks. Most recently, HVAC School was updated on November 2, 2026 and HVAC 3D Design Learning Studio on November 9, 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.*