Comparison

Construction Master Pro Calc vs Roof Pitch Factor

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

Roof Pitch Factor

Measure roof pitch accurately using your device's camera or manually. Get results in both pitch factor and degrees without complex calculations. Includes location data for saved photos.

Highlights
  • Measure pitch with camera
  • Manual pitch measurement
  • Displays pitch factor
  • Displays degrees
  • Location information
Features
Read full description

Quickly and easily find the pitch to a roof just by looking through your camera. Get the pitch factor or degrees without remembering any complex equations or doing any calculating. Features: + Displays both Pitch Factor and Degrees + Use with or without the camera + Location information, current address, on saved photos (not required) Check out our other roofing apps: - RoofSketchPro (The ultimate roofing helper, sketch a roof, turn the measurements into materials and cost reports, even sign and send a final proposal all from within the app) - The Roofing Pitchbook (Sales guide for roofing professionals) Find out even more: http://techtoolbelt.com

Screenshots

Construction Master Pro Calc4 screens
Roof Pitch Factor2 screens

Verdict

The call

The clearest difference is rating: Construction Master Pro Calc at 4.8 against Roof Pitch Factor's 3.8. Construction Master Pro Calc also leads on ratings volume (40K vs 494) and review sentiment (60% vs 39%). Roof Pitch Factor's advantage is in-app purchases (none vs 20) and iOS requirement (7.0 vs 15.0). 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. Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month. Roof Pitch Factor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Construction Master Pro Calc holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 494, so its average is the more settled of the two. Written reviews point the same way: 60% of Construction Master Pro Calc's written reviews are positive against 39% of Roof Pitch Factor's.

UpkeepUpdate frequency

Construction Master Pro Calc ships an update every 3 weeks, Roof Pitch Factor every 3 months. The most recent releases landed on October 29, 2026 and October 23, 2026 respectively.

Scorecard8 real differences · 3 level
Construction Master Pro Calc versus Roof Pitch Factor: the parameters behind the verdict, then further details
ParameterConstruction Master Pro CalcRoof Pitch Factor
PriceFreeFree
Rating4.8 (40K ratings) — better3.8 (494 ratings)
Positive reviews60.4% of reviews — better39.3% of reviews
Number of ratings40K — better494
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#40 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.07.0 — better
Further details — not scored
Size111 MB5 MB
Age rating12+4+
DeveloperCalculated IndustriesBeOriginal

Customer experience

Construction Master Pro Calc

All ratings40,354 ratings
Positive96.4%
Neutral1.2%
Negative2.4%
Written reviews326 reviews
Positive60.4%
Neutral5.2%
Negative34.4%

Roof Pitch Factor

All ratings456 ratings
Positive70.6%
Neutral4.6%
Negative24.8%
Written reviews84 reviews
Positive39.3%
Neutral3.6%
Negative57.1%

User reviews

Construction Master Pro Calc

From 40K App Store ratings

What we love

  • 🚀 Convenient and always available
  • ⚙️ Comprehensive construction calculations
  • 💪 Industry-standard tool
  • 🔍 Accurate and reliable
  • 📱 Integrates well with mobile devices

Room to improve

  • 💰 Subscription model too expensive
  • 🔒 Locks data behind subscription
  • 🔄 Forced to re-purchase after device changes
  • 🔍 Lacks full metric support
  • 🔧 Occasional UI/UX issues

Roof Pitch Factor

From 494 App Store ratings

What we love

  • 🚀 Reliable roof pitch measurement
  • 👍 Useful for residential developments
  • 💡 Allows taking photos to document pitch
  • 👍 Accurate and easy to use

Room to improve

  • 🐛 Crashes on iOS updates
  • 🐛 Compatibility issues with newer iOS versions
  • 🐛 Camera and location permission problems
  • 🐛 Difficulty closing the app

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

Roof Pitch Factor

Reported bugs

4 issues
  • App crashes immediately on launch
  • Unable to access camera and location services
  • App freezes and locks up the phone
  • Pitch measurements not always accurate

Requested features

2 requests
  • Add an exit option or ability to close the app easily
  • Create a dedicated folder for saved roof pitch photos

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
None

Roof Pitch Factor

No in-app purchases

Questions

Is Construction Master Pro Calc free?
Construction Master Pro Calc is free to download, with in-app purchases available.
Is Roof Pitch Factor free?
Roof Pitch Factor is free to download, with no in-app purchases.
Which has better reviews, Construction Master Pro Calc or Roof Pitch Factor?
Construction Master Pro Calc is rated higher. Construction Master Pro Calc averages 4.8 out of 5 from 40K ratings, while Roof Pitch Factor averages 3.8 from 494 ratings.
Do Construction Master Pro Calc or Roof Pitch Factor have ads?
Neither Construction Master Pro Calc nor Roof Pitch Factor shows ads.
Which is updated more often, Construction Master Pro Calc or Roof Pitch Factor?
Construction Master Pro Calc ships an update every 3 weeks, and Roof Pitch Factor every 3 months. Most recently, Construction Master Pro Calc was updated on October 29, 2026 and Roof Pitch Factor on October 23, 2026.

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