# SmarTech vs HVAC/R AI Pro

The clearest difference is rating: HVAC/R AI Pro at 4.6 against SmarTech's 3.6. HVAC/R AI Pro also leads on update cadence (every 5 weeks vs every 12 months). SmarTech's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. HVAC/R AI Pro sells 2 in-app purchases, starting at $7.99 per month. SmarTech asks for nothing beyond the download.

HVAC/R AI Pro holds the better App Store score, 4.6 against 3.6. Both are backed by a comparable volume of ratings — 9 and 5 respectively.

SmarTech ships an update every 12 months, HVAC/R AI Pro every 5 weeks. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SmarTech | HVAC/R AI Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (9 ratings)](https://appshunter.io/ios/app/smartech/id1071783318/reviews) | **[4.6 (5 ratings)](https://appshunter.io/ios/app/hvacr-ai-pro/id6747730624/reviews)** |
| Number of ratings | **9** | 5 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 5 weeks** |
| Monetization | **Free** | Freemium |
| Size | 21 MB | 59 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Uniweld Products, Inc.](https://appshunter.io/developer/1097526384) | [Christopher Brown](https://appshunter.io/developer/1822667807) |

## What reviewers say

### SmarTech

[App page](https://appshunter.io/ios/app/smartech/id1071783318)

This app connects to a digital manifold to display accurate pressure and temperature readings. It offers real-time Superheat and Subcooling calculations, supports over 109 refrigerants, and features a "Smart Charge Zone" for optimal system charging. Users can also generate and export system performance reports.

**Highlights:** Real-time pressure and temperature readings, Superheat and Subcooling calculations, 109+ refrigerant types supported, Smart Charge Zone indicator, System performance reporting, PDF/CSV report export

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 | $7.99 | per month |
| Pro | $19.99 | per month |


## Frequently asked questions

### Is SmarTech free?

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

### Is HVAC/R AI Pro free?

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

### Which has better reviews, SmarTech or HVAC/R AI Pro?

HVAC/R AI Pro is rated higher. SmarTech averages 3.6 out of 5 from 9 ratings, while HVAC/R AI Pro averages 4.6 from 5 ratings.

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

Neither SmarTech nor HVAC/R AI Pro shows ads.

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

SmarTech ships an update every 12 months, and HVAC/R AI Pro every 5 weeks. Most recently, SmarTech was updated on October 1, 2026 and HVAC/R AI Pro on October 10, 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.*