# HVAC Formulator vs Conduit HVAC Toolkit

The clearest difference is review sentiment: Conduit HVAC Toolkit at 100% against HVAC Formulator's 9%. Conduit HVAC Toolkit also leads on price (Free vs $4.99) and rating (4.9 vs 2.0). On ads, device support and iOS requirement there is nothing between them.

Conduit HVAC Toolkit is free to download; HVAC Formulator costs $4.99 up front. HVAC Formulator sells 1 one-off in-app purchase. Conduit HVAC Toolkit asks for nothing beyond the download.

Conduit HVAC Toolkit holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: Conduit HVAC Toolkit has 40 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 Conduit HVAC Toolkit's.

HVAC Formulator ships an update every 2 months, Conduit HVAC Toolkit every 3 weeks. The most recent releases landed on October 18, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | HVAC Formulator | Conduit HVAC Toolkit |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/hvac-formulator/id318898907/reviews) | **[4.9 (40 ratings)](https://appshunter.io/ios/app/conduit-hvac-toolkit/id6444496270/reviews)** |
| Number of ratings | 1 | **40** |
| Positive reviews | 9.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 73 MB | 87 MB |
| Requires iOS | 18.6 | 18.6 |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Conduit Tech](https://appshunter.io/developer/1654960982) |

## 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 |


### Conduit HVAC Toolkit

[App page](https://appshunter.io/ios/app/conduit-hvac-toolkit/id6444496270)

This iPad app empowers HVAC contractors to quickly scan homes, generate 3D models, and perform certified load calculations. Visualize installations with augmented reality and create professional reports to build customer trust and close more sales.

**Highlights:** LiDAR-powered home scanning, 3D model creation, ACCA-certified load calculations, Augmented reality equipment visualization, Professional report generation, Faster sales process

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Formulator free?

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

### Is Conduit HVAC Toolkit free?

Conduit HVAC Toolkit is free to download, with no in-app purchases.

### Which has better reviews, HVAC Formulator or Conduit HVAC Toolkit?

Conduit HVAC Toolkit is rated higher. HVAC Formulator averages 2.0 out of 5 from 1 ratings, while Conduit HVAC Toolkit averages 4.9 from 40 ratings.

### Do HVAC Formulator or Conduit HVAC Toolkit have ads?

Neither HVAC Formulator nor Conduit HVAC Toolkit shows ads.

### Which is updated more often, HVAC Formulator or Conduit HVAC Toolkit?

HVAC Formulator ships an update every 2 months, and Conduit HVAC Toolkit every 3 weeks. Most recently, HVAC Formulator was updated on October 18, 2026 and Conduit HVAC Toolkit on October 27, 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.*