# HVAC RefCharge vs HVAC/R AI Pro

The clearest difference is price: HVAC/R AI Pro at Free against HVAC RefCharge's $9.99. HVAC/R AI Pro also leads on update cadence (every 5 weeks vs every 11 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

HVAC/R AI Pro is free to download; HVAC RefCharge costs $9.99 up front. HVAC RefCharge sells 1 one-off in-app purchase and HVAC/R AI Pro sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

HVAC RefCharge ships an update every 11 months, HVAC/R AI Pro every 5 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | HVAC RefCharge | HVAC/R AI Pro |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[4.6 (5 ratings)](https://appshunter.io/ios/app/hvacr-ai-pro/id6747730624/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 5 weeks** |
| Monetization | Paid | **Freemium** |
| Size | 6 MB | 94 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +4 | 17+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Cowboy G Industries LLC](https://appshunter.io/developer/1822667807) |

## What reviewers say

### HVAC RefCharge

[App page](https://appshunter.io/ios/app/hvac-refcharge/id577005428)

This app helps HVAC technicians quickly calculate refrigerant superheat and subcool levels. It supports over 100 refrigerants and offers interactive adjustments for precise charging decisions. Features include atmospheric pressure adjustments and unit customization.

**Highlights:** Superheat and subcool calculations, Supports 100+ refrigerants, Interactive slider for adjustments, Atmospheric pressure compensation, Customizable input types, Project photo assignment, Email report generation, English/Metric unit display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


### HVAC/R AI Pro

[App page](https://appshunter.io/ios/app/hvacr-ai-pro/id6747730624)

This app provides HVAC and refrigeration technicians with AI-powered diagnostic assistance, duct sizing calculations, and job estimation tools. It offers step-by-step troubleshooting, airflow analysis, and photo-based equipment support to streamline service calls.

**Highlights:** AI Diagnostic Assistant, Step-by-step troubleshooting, Duct sizing calculations, Airflow analysis, Job estimate tool, Photo-based equipment support, Chat history

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $9.99 | per month |
| Pro | $19.99 | per month |


## Frequently asked questions

### Is HVAC RefCharge free?

HVAC RefCharge costs $9.99, and also offers in-app purchases.

### Is HVAC/R AI Pro free?

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

### Do HVAC RefCharge or HVAC/R AI Pro have ads?

Neither HVAC RefCharge nor HVAC/R AI Pro shows ads.

### Which is updated more often, HVAC RefCharge or HVAC/R AI Pro?

HVAC RefCharge ships an update every 11 months, and HVAC/R AI Pro every 5 weeks. Most recently, HVAC RefCharge was updated on November 1, 2026 and HVAC/R AI Pro on October 30, 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.*