# HVAC Master AI vs Aireub Tech

The clearest difference is in-app purchases: Aireub Tech at none against HVAC Master AI's 1. Aireub Tech also leads on update cadence (every 5 days vs every 11 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. HVAC Master AI sells 1 in-app purchase, starting at $4.99 per month. Aireub Tech asks for nothing beyond the download.

HVAC Master AI ships an update every 11 days, Aireub Tech every 5 days. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | HVAC Master AI | Aireub Tech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/hvac-master-ai/id6738960643/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 159 MB | 76 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [alexis atilano](https://appshunter.io/developer/1783149667) | [Aireub LLC](https://appshunter.io/developer/1833157638) |

## What reviewers say

### HVAC Master AI

[App page](https://appshunter.io/ios/app/hvac-master-ai/id6738960643)

This mobile assistant helps HVAC technicians diagnose, repair, and optimize heating, ventilation, and air conditioning systems. It provides expert advice, refrigerant information, EPA 608 guidance, and heat pump insights for quick access to solutions.

**Highlights:** Comprehensive HVAC troubleshooting advice, Refrigerant expertise, EPA 608 compliance guidance, Heat pump system insights, Quick access to solutions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly  Subscription | $4.99 | per month |


### Aireub Tech

[App page](https://appshunter.io/ios/app/aireub-tech/id6751023417)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Master AI free?

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

### Is Aireub Tech free?

Aireub Tech is free to download, with no in-app purchases.

### Do HVAC Master AI or Aireub Tech have ads?

Neither HVAC Master AI nor Aireub Tech shows ads.

### Which is updated more often, HVAC Master AI or Aireub Tech?

HVAC Master AI ships an update every 11 days, and Aireub Tech every 5 days. Most recently, HVAC Master AI was updated on September 30, 2026 and Aireub Tech on September 29, 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.*