Comparison

Pipe Flow Wizard vs Gastite Sizing App

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

Head to head
About

Pipe Flow Wizard

Calculate fluid flow rate and pressure loss in pipes. This app helps engineers determine pipe diameter, maximum pipe length, and friction loss for both liquid and gas flows, including fittings and elevation changes. Results can be shared as Excel or PDF reports.

Highlights
  • Flow rate calculations
  • Pressure loss calculations
  • Pipe diameter sizing
  • Maximum pipe length calculation
  • Liquid and gas flow support
  • Customizable material, fluid, and fitting databases
  • Imperial and metric unit support
  • Excel and PDF report generation
Features
Read full description

Pipe Flow Wizard is a fluid flow rate and pressure loss calculator app from Pipe Flow Software. Perform flow rate calculations, calculate pressure drop in a pipe, size a pipe diameter, or calculate a maximum pipe length for a given flow rate at an allowed pressure loss. The original Pipe Flow Wizard software is used by engineers in over 100 countries worldwide and now the new mobile version for iOS brings the same calculations to iPhone and iPad. Find friction loss, find flow rate, find minimum size of pipe diameter for given flow rate and pressure loss, or find length of pipe for a specified maximum pressure loss. Pipe Flow Wizard works for liquid and gas flow and allows for the inclusion of valves, fittings, and changes in elevation. Pressure losses for non-compressible fluids (liquids) are calculated using the Darcy-Weisbach formula, and for compressible fluids (gases), the user can choose from the General Fundamental Flow, Complete Isothermal Flow, AGA, IGT, Panhandle A, Panhandle B, or the Weymouth equation. Pipe Flow Wizard has databases for pipe materials, pipe diameters, pipe fittings (k factors), and fluids. Users can also specify and add their own data for pipe materials, sizes, fittings and fluids. Data and results can be entered and displayed in either imperial or metric units and the units of each individual field can be specified separately. Calculation results include Reynolds number, friction factor, flow type (laminar or turbulent), friction losses, fitting losses, fluid velocities and more. Pipe Flow Wizard calculation results have been verified against 50 cases of published results from well known sources. These include calculated results for both liquid and gas systems. The results of these calculations are included in two Results Verification PDF documents which can be accessed from within the App. There is also a compressible gas flow equations document and a comprehensive user guide. The Pipe Flow Wizard App makes it easy for pipe system engineers to perform flow rate and pressure drop calculations, where the calculation results can easily be shared as an Excel or PDF Report. Calculations can also be saved to the iPhone or iPad and data files can be shared with other users of the software on either macOS or Windows. The Pipe Flow Wizard software has unrivalled functions and features that aren't often found in other flow rate and pressure loss calculator apps: - Liquid properties database for water, oils, acids, and other fluids. - Gas properties database for air, nitrogen, natural gas, and other compressible fluids. - Pipe material database for various Steel, Aluminium, Copper, HDPE, and other pipes. - Fitting database for standard valves and bends, with associated K factor values. - User definable custom materials, fluids and fittings. - Gas properties calculator to help with the creation of user defined gas data at a specific temperature and pressure condition. - Professional Excel and PDF reports showing calculation results. - Results verification against published data to provide confidence in the calculation results. - Configurable post decimals for display on screen and in reports. - Automatic conversion between a wide range of units. - Compatibility with Pipe Flow Wizard files for macOS and Windows. - High quality, reliable software, and unrivalled customer support. Pipe Flow Software programs are trusted and used by engineers in over 100 countries worldwide. Pipe Flow Wizard offers auto-renewable subscriptions. Purchasing a subscription will remove all calculation restrictions and enable full use of the Pipe Flow Wizard App. When a subscription expires, the App will return to Trial Mode, where certain calculations are restricted. Terms of Use: https://www.pipeflow.com/pipe-flow-wizard-software/pipe-flow-wizard-software-license-terms

About

Gastite Sizing App

This app simplifies calculating the required size of Gastite® CSST for gas installations. Input gas type, CSST length, and appliance power to instantly determine the correct size. It offers easy navigation, user-friendly design, and access to FAQs and installation guides.

Highlights
  • CSST sizing calculation
  • Natural gas or LPG selection
  • Access to FAQs
  • Downloadable installation guide
  • User-friendly design
  • Contact support
Features
Read full description

With the Gastite® Sizing APP it is easy to calculate the size of Gastite® CSST your next gas installation will require. Simply add basic information, including gas type, CSST length and appliance Max KW, and the app will instantly identify the size of Gastite® CSST the installation will require. Key features include: • Easy navigation • Intuitive, user-friendly design • Choose from natural gas or LPG depending on the installation • Access a range of frequently asked questions • Download the comprehensive Design & Installation Guide • Contact us Cost-effective and flexible, the Gastite® system has been designed to offer ease of installation and is suitable for both internal and external installation, including direct burial, according to manufacturer’s instructions. Supplied in one continuous, pre-marked by the metre, length, Gastite® CSST requires only simple hand tools and no hot works for successful installation. The Gastite® system should only be installed according to manufacturer’s instructions. Gas installation work should only be carried out by a business or self-employed operative who is a member of a class of persons approved by the Health & Safety Executive (HSE). The current registration body is the Gas Safe Register.

Screenshots

Pipe Flow Wizard4 screens
Gastite Sizing App3 screens

Verdict

The call

The clearest difference is review sentiment: Gastite Sizing App at 100% against Pipe Flow Wizard's 50%. Gastite Sizing App also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 2 months). Pipe Flow Wizard's advantage is iOS requirement (11.0 vs 13.0). On price, 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

Both are free to download. Pipe Flow Wizard sells 3 in-app purchases, starting at $9.99 per month. Gastite Sizing App asks for nothing beyond the download.

UpkeepUpdate frequency

Pipe Flow Wizard ships an update every 2 months, Gastite Sizing App every 3 weeks. The most recent releases landed on September 12, 2026 and June 5, 2026 respectively.

Scorecard5 real differences · 5 level
Pipe Flow Wizard versus Gastite Sizing App: the parameters behind the verdict, then further details
ParameterPipe Flow WizardGastite Sizing App
PriceFreeFree
Rating4.5 (102 ratings) — better—
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings102 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size73 MB15 MB
Age rating4+4+
DeveloperPipe Flow SoftwareGastite Systems Limited

Customer experience

Pipe Flow Wizard

All ratings102 ratings
Positive88.2%
Neutral5.9%
Negative5.9%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Gastite Sizing App

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Pipe Flow Wizard

Subscriptions3
  • Pipe Flow Wizard - 1M7 Days trial$9.991 Month
  • Pipe Flow Wizard - 1Y7 Days trial$19.991 Year
  • Pipe Flow Wizard - 3M7 Days trial$20.493 Months
None

Gastite Sizing App

No in-app purchases

Questions

Is Pipe Flow Wizard free?
Pipe Flow Wizard is free to download, with in-app purchases available.
Is Gastite Sizing App free?
Gastite Sizing App is free to download, with no in-app purchases.
Do Pipe Flow Wizard or Gastite Sizing App have ads?
Neither Pipe Flow Wizard nor Gastite Sizing App shows ads.
Which is updated more often, Pipe Flow Wizard or Gastite Sizing App?
Pipe Flow Wizard ships an update every 2 months, and Gastite Sizing App every 3 weeks. Most recently, Pipe Flow Wizard was updated on September 12, 2026 and Gastite Sizing App on June 5, 2026.

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