Comparison

Construction Master Pro Calc vs Pipe Flow Gas Pressure Drop

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

Head to head
About

Construction Master Pro Calc

This app is a powerful construction calculator designed for professionals working with dimensions. It offers a wide range of solutions for dimensional math, right angle calculations, area and volume, and special functions, helping to improve speed and accuracy in layouts, bids, and estimates.

Highlights
  • Dimensional math and conversions
  • Right angle and rafter calculations
  • Area and volume solutions
  • Full trigonometric functions
  • Built-in user's guide and help
  • Save and share calculations
  • Project notes and attachments
Features
Read full description

FREE Try Before You Buy 14 Day Trial; your App Store account is not charged by Apple during the free trial. Rated 4.8 stars with over 1.12M downloads. The trusted construction calculator used by professionals across the US and the world. The go-to feet-inch-fraction calculator for framers, contractors, and builders. Includes Construction Master Pro and Construction Master Pro Trig in one app, with the CMPro Training Guide built in. Built with the same core engine that powers the industry-standard advanced construction-math calculators from Calculated Industries. Award-winning tools trusted by the industry for 40 years. BUILT FOR THE JOBSITE • Framers and carpenters: rafter cuts, stair layouts, lumber quantities, and framing calculations on the job • Builders and general contractors: estimates, material takeoffs, and building layouts • Concrete and masonry: footing volume, block counts, and unit conversions • Roofing contractors: bundles, squares, pitch, and slope in seconds WHY PROFESSIONALS CHOOSE CONSTRUCTION MASTER® PRO • Powerful built-in calculations make CMPro ideal for completing layouts, plans, bids, and estimates • Work in and convert between all common building dimensional formats US & Metric • Built-in right angle functions simplify square-ups, rafters, slopes, and more • Handles framing, roofing, concrete, lumber, and stair calculations in one app • Full trigonometric functions for advanced construction math BUILT-IN SOLUTIONS • Dimensional Math and Conversions • Feet-Inch-Fraction, Inch Fraction, Yards • Decimal Feet and Inches (10ths, 100ths) • Preset Fractions (1/2" through 1/64") • D:M:S, Decimal Degree Entry and Conversions • Full Metric Function (m, cm, mm) RIGHT ANGLE SOLUTIONS • Complete Right Angle/Rafter Calculations • Pitch Key (Slope and Grade) • Rise, Run, Diagonal/Common Rafter Keys • Regular and Irregular Hip/Valley & Jack Rafter Keys • Rafter Cutting Angles (Plumb, Cheek, and Level Cuts) • Stair Layouts (including – Riser Limit, Stairwell Opening, Headroom, Floor Thickness) • Rake-Wall (including Arched) AREA AND VOLUME SOLUTIONS • Square and Cubic • Roof – Bundles, Squares, 4x8 Sheets, Pitch, Plan Area • Drywall, Siding and Paneling 4x8, 4x9 and 4x12 • Column/Cone Area and Volume -- • Basic & Advanced Circular Calculations • Weight per Volume Conversions • Length, Width, and Height Keys • Blocks, Footings SPECIAL FUNCTIONS • Trigonometric Function Keys: Sine, Cosine, Tangent, Arcsine, Arccosine, Arctangent • Board Feet • Studs: Find number On-center • User-Definable Preferences • Cost per Unit (total costs based on unit price) • Equal-Sided Polygon • Compound Miters • Crown Angle • Advanced Paperless Tape APP-ENHANCED FEATURES • Ask CMPro – exact steps for any calculation. AI built on CMPro’s 40 years of proven math • CMPro Toolbelt -- quick access to every tool, customizable for your workflow • Fast Fractions Mode -- dedicated fraction keys for faster, more precise entry • Materials Mode -- streamlined estimating for drywall, roofing, lumber, and more • Project Notes -- create text or voice-to-text notes, set up folders by project or client, add attachments, and share with your crew • EZ Calcs – 100+ forms-based calculators with illustrations for framing, concrete, roofing quantities, and much more. • Searchable Help and how-to videos • Context-sensitive Help -- press and hold any function key for Help text, diagrams, and videos • Save and share calculations and outputs (e.g., cut lists) with others on your crew • Bosch GLM integration -- send measured values into live calculations or Notes SUBSCRIPTION INFORMATION Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Manage or cancel in Apple account Settings > Account (Apple ID) > Subscriptions. TRADEMARKS Construction Master® and Calculated Industries® are registered trademarks of Calculated Industries, Inc. Copyright 2026

About

Pipe Flow Gas Pressure Drop

This app calculates gas pressure loss in pipes using various compressible flow equations. It automatically handles gas density changes and provides detailed results including Reynolds number and friction factors. Users can customize pipe materials, fittings, and gases from integrated or custom databases.

Highlights
  • Friction and fitting loss calculations
  • Multiple compressible flow equations
  • Automatic gas density handling
  • Customizable pipe, fitting, and gas data
  • Imperial and Metric unit support
  • Professional Excel and PDF reports
  • Results verification against published data
Features
Read full description

Pipe Flow Gas Pressure Drop is a pressure loss calculator app from Pipe Flow Software that performs calculations using compressible isothermal equations to calculate friction loss and fitting loss results. Pressure losses can be calculated using the General Fundamental Flow, Complete Isothermal Flow, AGA, IGT, Panhandle A, Panhandle B and Weymouth equations. Changes in gas density are handled automatically using the Ideal Gas Law together with either a calculated CNGA compressibility factor or a specified a custom compressibility. The atmospheric pressure and standard volume conditions can also be defined as required. Pipe Flow Software applications are used by engineers in over 100 countries worldwide. The Gas Pressure Drop App has an intuitive user interface that allows for easy entry of the input data, including changes in elevation, and selection of valves & fittings. Comprehensive results include Reynolds number, friction factor, friction losses, fitting losses, fluid velocities and more. Each result is clearly displayed using expandable sections that reveal further information as needed. Users can select pipe materials, pipe diameters, pipe fittings (k factors) and gases from the integrated databases, and these can also be extended with user specific data for custom pipe materials, diameters, fittings, and gas properties. An integrated gas properties calculator assists the user with the creation of user defined gas data at a specific temperature and pressure condition. The App can operate in Imperial or Metric units and each individual field can be further customised to use a specific unit. Results values can be displayed to a specified number of decimal places. Pipe Flow Gas Pressure Drop calculation results have been verified against multiple cases of published data from well known sources. The results of these calculations are included in the Compressible Results Verification PDF document which can be accessed from within the App. Engineers can easily perform their gas pressure drop calculations in the office or on site. Professional Excel and PDF reports can easily be shared with others. Results can also be saved to the library within the App. The Pipe Flow Gas Pressure Drop software has unrivalled functions and features: - 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 iOS, macOS and Windows. - Calculation engine based on the same reliable calculation engine that is used by Pipe Flow Software's premier Pipe Flow Expert software, which is trusted by users in over 100 countries worldwide. - High quality, reliable software, and unrivalled customer support. Pipe Flow Gas Pressure Drop is offered as as a free trial download and can be purchased for a one-time fee within the App. Terms of Use: https://www.pipeflow.com/pipe-flow-mobile-software/pipe-flow-mobile-software-license-terms

Screenshots

Construction Master Pro Calc4 screens
Pipe Flow Gas Pressure Drop4 screens

Verdict

The call

The clearest difference is monetization model: Pipe Flow Gas Pressure Drop at free against Construction Master Pro Calc's free with in-app purchases. Pipe Flow Gas Pressure Drop also leads on iOS requirement (11.0 vs 15.0). Construction Master Pro Calc's advantage is ratings volume (40K vs 13) and chart position (#43 vs unranked). On price, rating, update cadence and ads 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. Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month and Pipe Flow Gas Pressure Drop sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Construction Master Pro Calc against 4.8 for Pipe Flow Gas Pressure Drop. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 13, so its average is the more settled of the two.

UpkeepUpdate frequency

Construction Master Pro Calc ships an update every 3 weeks, Pipe Flow Gas Pressure Drop fortnightly. The most recent releases landed on September 25, 2026 and September 3, 2026 respectively.

Scorecard4 real differences · 7 level
Construction Master Pro Calc versus Pipe Flow Gas Pressure Drop: the parameters behind the verdict, then further details
ParameterConstruction Master Pro CalcPipe Flow Gas Pressure Drop
PriceFreeFree
Rating4.8 (40K ratings)4.8 (13 ratings)
Positive reviews60.1% of reviews—
Number of ratings40K — better13
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
Best chart rank#43 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size111 MB67 MB
Age rating12+4+
DeveloperCalculated IndustriesPipe Flow Software

Customer experience

Construction Master Pro Calc

All ratings39,604 ratings
Positive96.4%
Neutral1.2%
Negative2.3%
Written reviews321 reviews
Positive60.1%
Neutral5.3%
Negative34.6%

Pipe Flow Gas Pressure Drop

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Construction Master Pro Calc

Reported bugs

3 issues
  • Crashes or freezes on certain devices
  • Calculation errors in some scenarios
  • Inconsistent behavior after updates

Requested features

5 requests
  • Add metric unit support
  • Offer one-time purchase option
  • Improve backup and data transfer
  • Add more customization options
  • Enhance overall user experience

Pipe Flow Gas Pressure Drop

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Construction Master Pro Calc

Subscriptions12
  • 1 Month Full Access7 Days trial2 variants$3.691 Month
  • 1 Month Full Access14 Days trial4 variants$4.991 Month
  • 1 Month Full Access7 Days trial$4.991 Month
Show 9 more
  • 1 Month Full Access1 Month trial$4.991 Month
  • CMPro Full Access7 Days trial$9.991 Year
  • 6 Months Full Access7 Days trial$19.996 Months
  • 1 Year Full Access7 Days trial$19.991 Year
  • 1 Year Full Access7 Days trial2 variants$29.991 Year
  • 1 Year Full Access14 Days trial4 variants$39.991 Year
  • 1 Year Full Access7 Days trial$39.991 Year
  • 1 Year Full Access1 Month trial$39.991 Year
  • 1 Year Full Access3 Months trial$39.991 Year
1 purchases

Pipe Flow Gas Pressure Drop

One-time1
  • Pipe Flow Gas Pressure Drop$4.99

Questions

Is Construction Master Pro Calc free?
Construction Master Pro Calc is free to download, with in-app purchases available.
Is Pipe Flow Gas Pressure Drop free?
Pipe Flow Gas Pressure Drop is free to download, with in-app purchases available.
Which has better reviews, Construction Master Pro Calc or Pipe Flow Gas Pressure Drop?
Construction Master Pro Calc and Pipe Flow Gas Pressure Drop are both rated 4.8 out of 5 on the App Store, from 40K and 13 ratings respectively.
Do Construction Master Pro Calc or Pipe Flow Gas Pressure Drop have ads?
Neither Construction Master Pro Calc nor Pipe Flow Gas Pressure Drop shows ads.
Which is updated more often, Construction Master Pro Calc or Pipe Flow Gas Pressure Drop?
Construction Master Pro Calc ships an update every 3 weeks, and Pipe Flow Gas Pressure Drop fortnightly. Most recently, Construction Master Pro Calc was updated on September 25, 2026 and Pipe Flow Gas Pressure Drop on September 3, 2026.

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