Comparison

Measures Unit Converter vs Construction Master Pro Calc

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

Head to head
About

Measures Unit Converter

This app offers a comprehensive unit conversion tool with over 971 units across 40 categories, including 173 currencies with real-time exchange rates. It features an intuitive interface, a scientific calculator, and offline functionality, making it ideal for precise conversions.

Highlights
  • 971 units across 40 categories
  • 173 currencies with real-time rates
  • Offline conversion functionality
  • Scientific calculator
  • Intuitive redesigned interface
  • Customizable themes
Features
Read full description

Measures is the ultimate unit converter for iOS featuring 971 units across 40 categories and 173 currencies with real-time rates. NEW VERSION - COMPLETELY REDESIGNED: • 971 units across 40 categories • 173 currencies with automatic real-time rates • Completely redesigned, intuitive interface • Scientific calculator with advanced functions • Enhanced favorites with drag & drop reordering • Intelligent search with instant results • Fully customizable with 5 beautiful themes and many options • Works completely offline - no internet required for conversions PROFESSIONAL CATEGORIES: • Traditional: Length, mass, volume, area, temperature • Scientific: Energy, force, pressure, density, viscosity • Specialized: Clothing sizes, blood sugar, typography • Currencies: 173 countries with real-time rates • Plus 32 additional categories! Perfect for scientists, engineers, students, and professionals who need precise conversions.

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

Screenshots

Measures Unit Converter4 screens
Construction Master Pro Calc4 screens

Verdict

The call

The clearest difference is price: Construction Master Pro Calc at Free against Measures Unit Converter's $1.99. Construction Master Pro Calc also leads on rating (4.8 vs 4.4) and ratings volume (40K vs 30). Measures Unit Converter's advantage is review sentiment (91% vs 60%) and update cadence (every 8 days vs every 3 weeks). On ads, in-app purchases, monetization model 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

Construction Master Pro Calc is free to download; Measures Unit Converter costs $1.99 up front. Measures Unit Converter sells 4 one-off in-app purchases and Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Construction Master Pro Calc holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 30, so its average is the more settled of the two. Written reviews complicate that: 91% of Measures Unit Converter's written reviews are positive against 60% of Construction Master Pro Calc's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Measures Unit Converter ships an update every 8 days, Construction Master Pro Calc every 3 weeks. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

Scorecard7 real differences · 4 level
Measures Unit Converter versus Construction Master Pro Calc: the parameters behind the verdict, then further details
ParameterMeasures Unit ConverterConstruction Master Pro Calc
Price$1.99Free — better
Rating4.4 (30 ratings)4.8 (40K ratings) — better
Positive reviews91.4% of reviews — better60.1% of reviews
Number of ratings3040K — better
Update frequencyEvery 8 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank—#49 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size18 MB111 MB
Age rating4+12+
DeveloperNeuwert Media GmbHCalculated Industries

Customer experience

Measures Unit Converter

All ratings30 ratings
Positive83.3%
Neutral3.3%
Negative13.3%
Written reviews833 reviews
Positive91.4%
Neutral2.3%
Negative6.4%

Construction Master Pro Calc

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

User reviews

Measures Unit Converter

From 30 App Store ratings

What we love

  • 👍 Simple and intuitive interface
  • 🚀 Comprehensive range of conversions
  • 💡 Customizable unit selection
  • 🔍 Accurate and up-to-date currency rates
  • 🔢 Handy built-in calculator

Room to improve

  • 🐛 Occasional crashes or bugs
  • 🔀 Cumbersome navigation for some conversions
  • 🔍 Lack of customization options for some units
  • 💤 Outdated or inaccurate conversion factors in some cases

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

Bugs and requests

Measures Unit Converter

Reported bugs

2 issues
  • Crashes on launch with iOS 7.0.2
  • Inconsistent behavior when changing units in calculator

Requested features

4 requests
  • Add ability to swap conversion directions
  • Improve currency conversion to show tourist rates
  • Expand RF/frequency conversion options
  • Add support for more advanced unit types (e.g. wind chill, biblical currencies)

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

In-app purchases

4 purchases

Measures Unit Converter

One-time4
  • Coffee$1.99
  • Breakfast$4.99
  • Lunch$9.99
Show 1 more
  • Dinner$19.99
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

Questions

Is Measures Unit Converter free?
Measures Unit Converter costs $1.99, and also offers in-app purchases.
Is Construction Master Pro Calc free?
Construction Master Pro Calc is free to download, with in-app purchases available.
Which has better reviews, Measures Unit Converter or Construction Master Pro Calc?
Construction Master Pro Calc is rated higher. Measures Unit Converter averages 4.4 out of 5 from 30 ratings, while Construction Master Pro Calc averages 4.8 from 40K ratings.
Do Measures Unit Converter or Construction Master Pro Calc have ads?
Neither Measures Unit Converter nor Construction Master Pro Calc shows ads.
Which is updated more often, Measures Unit Converter or Construction Master Pro Calc?
Measures Unit Converter ships an update every 8 days, and Construction Master Pro Calc every 3 weeks. Most recently, Measures Unit Converter was updated on September 29, 2026 and Construction Master Pro Calc on September 30, 2026.

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