# SeaMatrix Keys vs HVAC AI

The clearest difference is in-app purchases: SeaMatrix Keys at none against HVAC AI's 4. HVAC AI's advantage is update cadence (every 12 months vs every 52 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. HVAC AI sells 4 in-app purchases, starting at $5.69 per 7 days. SeaMatrix Keys asks for nothing beyond the download.

SeaMatrix Keys ships an update every 52 months, HVAC AI every 12 months. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SeaMatrix Keys | HVAC AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/hvac-ai-tools-and-simulator/id6747603414/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 52 months | **Every 12 months** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 390 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SeaMatrix Technology LLC](https://appshunter.io/developer/1323109965) | [RODRIGO DIAZ](https://appshunter.io/developer/1575990541) |

## What reviewers say

### SeaMatrix Keys

[App page](https://appshunter.io/ios/app/seamatrix-keys/id1291853601)

**Features:** macOS Compatibility

**In-app purchases:** none


### HVAC AI

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

This app provides HVAC technicians with AI-powered diagnostic tools, a refrigerant slider, calculators, and a simulator. It helps diagnose faults, calculate values, and create professional quotes, all from a mobile device.

**Highlights:** AI-powered fault diagnosis, Digital refrigerant PT chart, Superheat and subcooling calculators, Interactive HVAC simulator, Gamified learning path, Professional quote builder, AI technical support

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

**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 SeaMatrix Keys free?

SeaMatrix Keys is free to download, with no in-app purchases.

### Is HVAC AI free?

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

### Do SeaMatrix Keys or HVAC AI have ads?

Neither SeaMatrix Keys nor HVAC AI shows ads.

### Which is updated more often, SeaMatrix Keys or HVAC AI?

SeaMatrix Keys ships an update every 52 months, and HVAC AI every 12 months. Most recently, SeaMatrix Keys was updated on October 29, 2026 and HVAC AI 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.*