# HVAC Formulator vs HVAC Super Tech

The clearest difference is review sentiment: HVAC Super Tech at 100% against HVAC Formulator's 9%. HVAC Super Tech also leads on price (Free vs $4.99) and rating (5.0 vs 2.0). On ads, in-app purchases and device support there is nothing between them.

HVAC Super Tech is free to download; HVAC Formulator costs $4.99 up front. HVAC Formulator sells 1 one-off in-app purchase and HVAC Super Tech sells 3 in-app purchases, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.

HVAC Super Tech holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: HVAC Super Tech has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 9% of HVAC Formulator's written reviews are positive against 100% of HVAC Super Tech's.

HVAC Formulator ships an update every 2 months, HVAC Super Tech fortnightly. The most recent releases landed on October 18, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | HVAC Formulator | HVAC Super Tech |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/hvac-formulator/id318898907/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/hvac-super-tech/id6744416563/reviews)** |
| Number of ratings | 1 | **5** |
| Positive reviews | 9.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Paid** | Subscription |
| Size | 73 MB | 21 MB |
| Requires iOS | 18.6 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [BUILDING SOLUTIONS TECHNICAL SERVICES LLC](https://appshunter.io/developer/1807618125) |

## What reviewers say

### HVAC Formulator

[App page](https://appshunter.io/ios/app/hvac-formulator/id318898907)

This app provides HVAC professionals with over 900 essential formulas and calculations for load calculations and system design. It supports both US and Metric units, offers instant switching, and includes 23 calculator categories and over 460 unit conversions. Designed for field use, it works offline and allows users to save and share results.

**Highlights:** Over 900 formulas and calculations, US & Metric unit support, 23 calculator categories, 460+ unit conversions, 8 temperature scales, Offline functionality, Save and share results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Pro | $3.99 | one-time |


### 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 |


## Frequently asked questions

### Is HVAC Formulator free?

HVAC Formulator costs $4.99, and also offers in-app purchases.

### Is HVAC Super Tech free?

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

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

HVAC Super Tech is rated higher. HVAC Formulator averages 2.0 out of 5 from 1 ratings, while HVAC Super Tech averages 5.0 from 5 ratings.

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

Neither HVAC Formulator nor HVAC Super Tech shows ads.

### Which is updated more often, HVAC Formulator or HVAC Super Tech?

HVAC Formulator ships an update every 2 months, and HVAC Super Tech fortnightly. Most recently, HVAC Formulator was updated on October 18, 2026 and HVAC Super Tech on October 21, 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.*