# HVAC Pipe Sizer vs Conduit HVAC Toolkit

The clearest difference is price: Conduit HVAC Toolkit at Free against HVAC Pipe Sizer's $7.99. Conduit HVAC Toolkit also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 10 months). On rating, ads, device support and iOS requirement there is nothing between them.

Conduit HVAC Toolkit is free to download; HVAC Pipe Sizer costs $7.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase. Conduit HVAC Toolkit asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for HVAC Pipe Sizer against 4.9 for Conduit HVAC Toolkit. 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 are what separate them: 80% of HVAC Pipe Sizer's written reviews are positive against 100% of Conduit HVAC Toolkit's.

HVAC Pipe Sizer ships an update every 10 months, Conduit HVAC Toolkit every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | Conduit HVAC Toolkit |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-plus/id342239204/reviews)** | [4.9 (40 ratings)](https://appshunter.io/ios/app/conduit-hvac-toolkit/id6444496270/reviews) |
| Number of ratings | 1 | **40** |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 87 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, iPad** | iPad |
| Age rating | +4 | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Conduit Tech](https://appshunter.io/developer/1654960982) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-plus/id342239204)

Calculate gas piping systems for low and high pressure. Input flow, pressure, or diameter to find pipe sizes, velocity, and equivalent lengths. Supports English and metric units, with extensive pipe fitting data.

**Highlights:** Low and high pressure gas pipe sizing, Calculate flow, pressure drop, diameter, and velocity, Universal app for iPhone and iPad, English and metric unit support, Built-in pipe fitting equivalent length tables, Slider controls for quick adjustments

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | 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 Pipe Sizer free?

HVAC Pipe Sizer costs $7.99, 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 Pipe Sizer or Conduit HVAC Toolkit?

HVAC Pipe Sizer is rated higher. HVAC Pipe Sizer averages 5.0 out of 5 from 1 ratings, while Conduit HVAC Toolkit averages 4.9 from 40 ratings.

### Do HVAC Pipe Sizer or Conduit HVAC Toolkit have ads?

Neither HVAC Pipe Sizer nor Conduit HVAC Toolkit shows ads.

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

HVAC Pipe Sizer ships an update every 10 months, and Conduit HVAC Toolkit every 3 weeks. Most recently, HVAC Pipe Sizer was updated on November 1, 2026 and Conduit HVAC Toolkit on November 3, 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.*