# HVACsim vs HVAC AI

The clearest difference is update cadence: HVACsim at every 2 months against HVAC AI's every 12 months. HVACsim also leads on iOS requirement (13.4 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HVACsim sells 1 one-off in-app purchase and HVAC AI sells 4 in-app purchases, starting at $5.69 per 7 days. Whichever you choose, the download price is not the number that matters.

HVACsim ships an update every 2 months, HVAC AI every 12 months. The most recent releases landed on September 20, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | HVACsim | HVAC AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (10 ratings)](https://appshunter.io/ios/app/hvacsim/id6740935191/reviews)** | — |
| Number of ratings | **10** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 390 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nauman Innovation Group LLC](https://appshunter.io/developer/1764933586) | [RODRIGO DIAZ](https://appshunter.io/developer/1575990541) |

## What reviewers say

### HVACsim

[App page](https://appshunter.io/ios/app/hvacsim/id6740935191)

This app offers interactive learning and real-world data analysis to help HVAC professionals diagnose and troubleshoot systems. It provides personalized training plans, skill assessments, and team management tools for contractors.

**Highlights:** Technical Knowledge Evaluator, Individualized Learning Plans, Real-World Data Analysis, Team Management Tools, Continuous Learning Library

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $29.99 | one-time |


### HVAC AI

[App page](https://appshunter.io/ios/app/hvac-ai-tools-and-simulator/id6747603414)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Offer | $5.69 | per 7 days |
| Weekly | $5.69 | per 7 days |
| Annual Offer | $46.49 | per year |
| Annual Subscription | $57.90 | per year |


## Frequently asked questions

### Is HVACsim free?

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

### Is HVAC AI free?

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

### Do HVACsim or HVAC AI have ads?

Neither HVACsim nor HVAC AI shows ads.

### Which is updated more often, HVACsim or HVAC AI?

HVACsim ships an update every 2 months, and HVAC AI every 12 months. Most recently, HVACsim was updated on September 20, 2026 and HVAC AI on August 15, 2026.

---

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