# HVAC Super Tech vs Units

The clearest difference is in-app purchases: Units at none against HVAC Super Tech's 3. Units also leads on ratings volume (9 vs 2). On price, rating, ads and device support there is nothing between them.

Both are free to download. HVAC Super Tech sells 3 in-app purchases, starting at $29.99 per month. Units asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for HVAC Super Tech against 4.9 for Units. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

## The numbers

| Metric | HVAC Super Tech | Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hvac-super-tech/id6744416563/reviews)** | [4.9 (9 ratings)](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020/reviews) |
| Number of ratings | 2 | **9** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Subscription | **Free** |
| Size | 21 MB | 33 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [BUILDING SOLUTIONS TECHNICAL SERVICES LLC](https://appshunter.io/developer/1807618125) | [Matys Bouziane](https://appshunter.io/developer/1785637310) |

## What reviewers say

### HVAC Super Tech

[App page](https://appshunter.io/ios/app/hvac-super-tech/id6744416563)

This app provides certified-level HVAC technical support, offering fast troubleshooting for error codes and system faults. It features smart image analysis for diagrams and hands-free voice assistance for technicians.

**Highlights:** Fast error code diagnosis, System fault analysis, Image analysis of diagrams, Hands-free voice commands, 24/7 technical support, All manufacturer brands supported

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Level-Monthly Subscription | $29.99 | per month |
| Pro Level-Yearly Subscription | $199.99 | per year |
| Part Timer-30 Day Access | $49.99 | one-time |


### Units

[App page](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020)

Instantly convert any unit with this comprehensive tool. It offers 57 categories, built-in calculators for finance and health, and size lookup tables for clothing and hardware. Enjoy offline functionality and a clean, ad-free experience.

**Highlights:** 57 conversion categories, Built-in calculators (currency, finance, health), Size lookup tables, Offline functionality, Conversion history, Favorites, Multi-language support

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Super Tech free?

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

### Is Units free?

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

### Which has better reviews, HVAC Super Tech or Units?

HVAC Super Tech is rated higher. HVAC Super Tech averages 5.0 out of 5 from 2 ratings, while Units averages 4.9 from 9 ratings.

### Do HVAC Super Tech or Units have ads?

Neither HVAC Super Tech nor Units shows ads.

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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.*