# HVAC Pipe Sizer Plus vs W

The clearest difference is price: W at Free against HVAC Pipe Sizer Plus's $13.99. W also leads on update cadence (every 3 months vs every 15 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

W is free to download; HVAC Pipe Sizer Plus costs $13.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC Pipe Sizer Plus ships an update every 15 months, W every 3 months. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer Plus | W |
| --- | --- | --- |
| Price | $13.99 | **Free** |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/hvac-pipe-sizer-plus/id352069594/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 27 MB | 29 MB |
| Requires iOS | 15.6 | **15** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [LumenRadio AB](https://appshunter.io/developer/1443137236) |

## What reviewers say

### HVAC Pipe Sizer Plus

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-plus/id352069594)

This utility app combines three specialized pipe sizing tools for HVAC systems: liquid, steam, and gas. It offers flexible input options, unit conversions, and an equipment locator for comprehensive HVAC design.

**Highlights:** Liquid pipe sizing, Steam pipe sizing with steam table calculator, Gas pipe sizing (low and high pressure), HVAC Equipment Locator, Slider controls for input adjustments, English and Metric unit display

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

**In-app purchases:** none


### W

[App page](https://appshunter.io/ios/app/w-bacnet/id6472276160)

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer Plus free?

HVAC Pipe Sizer Plus costs $13.99, with no in-app purchases.

### Is W free?

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

### Do HVAC Pipe Sizer Plus or W have ads?

Neither HVAC Pipe Sizer Plus nor W shows ads.

### Which is updated more often, HVAC Pipe Sizer Plus or W?

HVAC Pipe Sizer Plus ships an update every 15 months, and W every 3 months. Most recently, HVAC Pipe Sizer Plus was updated on October 8, 2026 and W on October 11, 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.*