Comparison

HVAC Pipe Sizer vs Seitron Smart Analysis

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 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
Read full description

The "HVAC Pipe Sizer - Gas Plus" application allows you to quickly size a simple low (less than or equal to 1.5 psi) and/or high (greater than 1.5 psi) pressure gas piping system by inputting a number of piping and gas properties. This application combines the functionality of our popular "HVAC Pipe Sizer - Gas Low" and "HVAC Pipe Sizer - Gas High" applications. This app is now a universal app meaning that it works on both the iPhone and iPad and adjusts its screen size accordingly. For low pressure gas piping, you can specify the total gas flow in ft3/hr (m3/hr) and one of either pressure drop (in. wg or Pa), pipe internal diameter (inches) or gas velocity (ft/s) parameters. The results include both the exact and nominal pipe diameters and the calculated velocity and total pipe equivalent length. If you are analyzing an existing pipe system, there is an option to input the existing pipe internal diameter and one of either pressure drop or gas velocity parameters to derive the calculated gas flow and other remaining properties. For high pressure gas piping, you can specify the total gas flow in ft3/hr (m3/hr), the upstream pressure (psig or kPa), and one of either downstream pressure (psig or kPa), pipe internal diameter (inches) or gas velocity (ft/s) parameters. The results include both the exact and nominal pipe diameters and the calculated velocity and total pipe equivalent length. If you are analyzing an existing pipe system, there is an option to input the existing pipe internal diameter, the upstream pressure, and one of either downstream pressure or gas velocity parameters to derive the calculated gas flow and other remaining properties. You can specify additional parameters such as the type of gas, various properties of the gas, 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. This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 The "HVAC Pipe Sizer - Gas Plus" application was designed by Carmel Software Corporation, a leader in HVAC design software since 1995. In fact, Autodesk (the makers of AutoCAD) acquired our load calculation software and incorporated it into their leading 3D modeling software called Revit. In addition, we developed a number of customized apps for ASHRAE, DNV GL, and other organizations. We also offer the following additional apps for the iPhone and iPad: 1. HVAC Residential Load Calcs for iPhone and iPad 2. HVAC Quick Load Plus 3. HVAC Quick Load 4. HVAC Toolkit 5. HVAC Pipe Sizer – Gas Low Pressure 6. HVAC Pipe Sizer - Gas High Pressure 7. HVAC Pipe Sizer – Liquid 8. HVAC Pipe Sizer – Steam 9. Steam Tables 10. Psychrometric Plus 11. Psychrometric LT 12. HVAC Pipe Sizer Plus 13. HVAC Pipe Sizer Gas Plus 14. HVAC Toolkit Ultimate 15. HVAC Equipment Locator 16. HVAC ResLoad-J 17. HVAC Psych HD

About

Seitron Smart Analysis

Connect to your combustion analyzer via Bluetooth to view live data, start analyses, and generate reports in various formats. Store and print your findings directly from your smartphone or tablet.

Highlights
  • Bluetooth connectivity
  • Live analysis data display
  • Start analysis remotely
  • Generate CSV, PDF, XML reports
  • Store analysis data
  • Print analysis reports
Features
Read full description

Seitron Smart Analysis allows you to interact with your Seitron mbustion analyzer through the Bluetooth Low Energy communication protocol (Bluetooth 4.0 or greater). Pair your analyzer with the smartphone/tablet via Bluetooth and: • display live analysis data • start an analysis on the instrument • create a report (csv, pdf or xml format) and share it • store in the smartphone/tablet the analyses • print the live/stored analyses For more information on compatibility with our analyzers, visit the Firmware Updates' section on our website (https://seitron.com/en/analyzers-service).

Screenshots

HVAC Pipe Sizer4 screens
Seitron Smart Analysis4 screens

Verdict

The call

HVAC Pipe Sizer and Seitron Smart Analysis both sit at 5.0 stars, but that hides the real split: 80% of HVAC Pipe Sizer's written reviews are positive against 0% of Seitron Smart Analysis's. HVAC Pipe Sizer also leads on chart position (#197 vs unranked). Seitron Smart Analysis's advantage is price (Free vs $7.99) and in-app purchases (none vs 1). On rating, ratings volume, 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

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for HVAC Pipe Sizer against 5.0 for Seitron Smart Analysis. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 80% of HVAC Pipe Sizer's written reviews are positive against 0% of Seitron Smart Analysis's.

UpkeepUpdate frequency

HVAC Pipe Sizer ships an update every 12 months, Seitron Smart Analysis weekly. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

Scorecard6 real differences · 5 level
HVAC Pipe Sizer versus Seitron Smart Analysis: the parameters behind the verdict, then further details
ParameterHVAC Pipe SizerSeitron Smart Analysis
Price$7.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews80.0% of reviews — better0.0% of reviews
Number of ratings11
Update frequencyEvery 12 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
Best chart rank#197 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.614.0 — better
Further details — not scored
Size18 MB70 MB
Age rating4+4+
DeveloperCarmel Software CorporationSeitron Spa

Customer experience

HVAC Pipe Sizer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Seitron Smart Analysis

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

1 purchases

HVAC Pipe Sizer

One-time1
  • HVAC Equipment Locator$9.99
None

Seitron Smart Analysis

No in-app purchases

Questions

Is HVAC Pipe Sizer free?
HVAC Pipe Sizer costs $7.99, and also offers in-app purchases.
Is Seitron Smart Analysis free?
Seitron Smart Analysis is free to download, with no in-app purchases.
Which has better reviews, HVAC Pipe Sizer or Seitron Smart Analysis?
HVAC Pipe Sizer and Seitron Smart Analysis are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do HVAC Pipe Sizer or Seitron Smart Analysis have ads?
Neither HVAC Pipe Sizer nor Seitron Smart Analysis shows ads.
Which is updated more often, HVAC Pipe Sizer or Seitron Smart Analysis?
HVAC Pipe Sizer ships an update every 12 months, and Seitron Smart Analysis weekly. Most recently, HVAC Pipe Sizer was updated on October 12, 2026 and Seitron Smart Analysis on October 13, 2026.

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