Comparison

HVAC Pipe Sizer vs Steam Worx

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

HVAC Pipe Sizer

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
Read full description

The "HVAC Pipe Sizer - Liquid" application allows you to quickly size a simple pipe system by inputting a number of piping and liquid properties, including hot and chilled water (hydronic). This app is a universal app that works on both the iPhone and iPad and adjusts its screen size accordingly. This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 You can specify the total fluid flow in GPM (or L/s) and one of either unit head loss (ft/100ft), pipe internal diameter (inches) or fluid velocity (ft/s) parameters. The results include both the exact and nominal pipe diameters and the calculated velocity and total head loss. If you are analyzing an existing pipe system, there is an option to input the existing pipe internal diameter and one of either unit head loss or fluid velocity parameters to derive the calculated fluid flow and other remaining properties. You can specify additional parameters such as the type of liquid, various properties of the liquid, the pipe material type, the total length of pipe, quantities for up to 11 different types of pipe fittings, and much more. You can also choose to display values in either english or metric units. This application includes built-in pipe fitting equivalent length and nominal pipe sizing tables for a wide variety of pipe material types and diameters. This application uses slider controls that allow you to quickly increment or decrement the input values and immediately observe the calculated results. You can also manually input exact values. The app allows you to email inputs and results once you have completed an analysis. We also offer the following additional applications for the iPhone/iPad: 1. HVAC Duct Sizer 2. HVAC Pipe Sizer – Gas Low Pressure 3. HVAC Pipe Sizer - Gas High Pressure 4. HVAC Pipe Sizer – Liquid 5. HVAC Pipe Sizer – Steam 6. Steam Tables 7. Psychrometric Plus 8. Psychrometric LT 9. HVAC Pipe Sizer Plus 10. HVAC Pipe Sizer Gas Plus 11. HVAC Toolkit 12. HVAC Toolkit Ultimate 13. HVAC Residential Load Calcs 14. HVAC Load Plus 15. HVAC Equipment Locator 16. ASHRAE Duct Fitting Database 17. ASHRAE 62.1 Ventilation Load Calcs 18. HVAC Psych HD 19. HVAC ResLoad-J 20. HVAC Residential Load Calcs HD

About

Steam Worx

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
Read full description

The Steam Worx app is your complete resource for: o Pilot-Operated PRV Sizing & Selection o Control Valve Sizing for Steam & Water o Full models codes for Watson McDaniel HD & HB Series Valves o Heat Exchanger Sizing o Pipe Sizing and Velocities o Noise Levels and Cavitation Calculations o Noise Attenuation & Anti-Cavitation Adapter Design o Steam Calculators o Comprehensive Unit Conversions

Screenshots

HVAC Pipe Sizer4 screens
Steam Worx4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
HVAC Pipe Sizer versus Steam Worx: the parameters behind the verdict, then further details
ParameterHVAC Pipe SizerSteam Worx
Price$4.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews71.4% of reviews—
Number of ratings—2 — better
Update frequencyEvery 8 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size1 MB18 MB
Age rating+417+
DeveloperCarmel Software CorporationWatson McDaniel Company

Customer experience

HVAC Pipe Sizer

Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

Steam Worx

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

HVAC Pipe Sizer

One-time1
  • HVAC Equipment Locator$9.99
None

Steam Worx

No in-app purchases

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.

Other comparisons