# Steam Worx vs Pipefitter Calculator (e4bc01)

The clearest difference is in-app purchases: Steam Worx at none against Pipefitter Calculator (e4bc01)'s 2. Steam Worx also leads on ads (none vs shown). Pipefitter Calculator (e4bc01)'s advantage is update cadence (every 4 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Pipefitter Calculator (e4bc01) sells 2 in-app purchases, starting at $4.99 per month. Steam Worx asks for nothing beyond the download.

Steam Worx ships an update every 2 months, Pipefitter Calculator (e4bc01) every 4 weeks. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Steam Worx | Pipefitter Calculator (e4bc01) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/steam-worx/id6467222774/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 18 MB | 50 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Watson McDaniel Company](https://appshunter.io/developer/1708408873) | [Justin Walls](https://appshunter.io/developer/6782460947) |

## What reviewers say

### 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


### Pipefitter Calculator (e4bc01)

[App page](https://appshunter.io/ios/app/pipefitter-calculator-e4bc01/id6782460945)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipefitter Pro | $4.99 | per month |
| Remove Ads Forever | $9.99 | one-time |


## Frequently asked questions

### Is Steam Worx free?

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

### Is Pipefitter Calculator (e4bc01) free?

Pipefitter Calculator (e4bc01) is free to download, with in-app purchases available.

### Do Steam Worx or Pipefitter Calculator (e4bc01) have ads?

Pipefitter Calculator (e4bc01) shows ads; Steam Worx does not.

### Which is updated more often, Steam Worx or Pipefitter Calculator (e4bc01)?

Steam Worx ships an update every 2 months, and Pipefitter Calculator (e4bc01) every 4 weeks. Most recently, Steam Worx was updated on September 30, 2026 and Pipefitter Calculator (e4bc01) on October 6, 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.*