# HVAC Pipe Sizer vs Steam Worx

The clearest difference is price: Steam Worx at Free against HVAC Pipe Sizer's $4.99. Steam Worx also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 8 months). On ads and device support there is nothing between them.

Steam Worx is free to download; HVAC Pipe Sizer costs $4.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase. Steam Worx asks for nothing beyond the download.

HVAC Pipe Sizer ships an update every 8 months, Steam Worx every 2 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | Steam Worx |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/steam-worx/id6467222774/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 18 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 17+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Watson McDaniel Company](https://appshunter.io/developer/1708408873) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-liquid/id325069065)

Calculate pipe sizes for liquid systems, including hot and chilled water. Input flow rate, head loss, diameter, or velocity to determine other properties. Supports various liquids, pipe materials, and fittings, with English or metric units.

**Highlights:** Liquid pipe sizing, Hydronic system calculations, Input flow, head loss, diameter, or velocity, Calculate fluid flow and head loss, Supports various liquids and pipe materials, English and metric unit options, Email results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


### Steam Worx

[App page](https://appshunter.io/ios/app/steam-worx/id6467222774)

This application assists engineers and technicians with complex fluid dynamics calculations. It provides tools for sizing and selecting pressure relief valves, control valves for steam and water, and heat exchangers. The app also includes calculators for pipe sizing, noise levels, and unit conversions.

**Highlights:** Pilot-Operated PRV Sizing, Control Valve Sizing (Steam & Water), Heat Exchanger Sizing, Pipe Sizing & Velocities, Noise Level & Cavitation Calculations, Unit Conversions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer free?

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

### Is Steam Worx free?

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

### Do HVAC Pipe Sizer or Steam Worx have ads?

Neither HVAC Pipe Sizer nor Steam Worx shows ads.

### Which is updated more often, HVAC Pipe Sizer or Steam Worx?

HVAC Pipe Sizer ships an update every 8 months, and Steam Worx every 2 months. Most recently, HVAC Pipe Sizer was updated on October 27, 2026 and Steam Worx on October 30, 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.*