Construction Master Pro Calc vs Conversion Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Conversion Calculator
Easily convert between metric and imperial units for weight, length, temperature, area, and time. This app offers precise, fast results with a clean interface, working offline for daily, travel, school, or work needs.
- Metric and imperial unit conversion
- Weight, length, temperature, area, time
- Offline functionality
- Precise and fast results
- Clean and minimal interface
- Over 100 measurement types
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Instantly Convert Units with Conversion Calculator - Metric Whether you're converting feet to meters, kg to lbs, or Celsius to Fahrenheit, the Conversion Calculator - Metric is the ultimate unit converter for daily, travel, school, or work use. This powerful and easy-to-use conversion app helps you switch between metric and imperial units effortlessly — from weight to length, temperature, area, and more. What You Can Convert: Weight: Instantly convert between kg and lbs, kilo, grams, and ounces Length: Convert feet to meters, inches, kilometers, and miles Temperature: Quick Celsius to Fahrenheit conversions and Kelvin Area: Convert square feet, square meters, and acres Time: Includes basic time converters for everyday needs With Conversion Calculator - Metric, you get precise, fast results no matter what you’re converting. Why Choose This Unit Converter All-in-one unit converter for over 100+ measurement types Accurate feet to meters, kg to lbs, and Celsius to Fahrenheit conversions Clean and minimal interface designed for ease and speed Works offline — no internet needed Supports both metric and imperial units for global compatibility From engineers to students to travelers, Conversion Calculator - Metric simplifies every kind of measurement conversion you need. Use Cases Planning a trip and need to switch from imperial to metric? Cooking a recipe that lists ingredients in lbs, but your scale shows kg? Doing a DIY project and stuck converting feet to meters? Working with temperatures and wondering what Celsius to Fahrenheit is? This conversion app handles it all. Download Now Get the best unit converter app available. With Conversion Calculator - Metric, you’ll convert weight, temperature, area, time, and length in seconds.
Screenshots
Verdict
Construction Master Pro Calc and Conversion Calculator both sit at 4.8 stars, but that hides the real split: 100% of Conversion Calculator's written reviews are positive against 60% of Construction Master Pro Calc's. Construction Master Pro Calc's advantage is ratings volume (40K vs 157) and chart position (#46 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
Both are free to download. Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month and Conversion Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for Construction Master Pro Calc against 4.8 for Conversion Calculator. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 157, so its average is the more settled of the two. Written reviews are what separate them: 60% of Construction Master Pro Calc's written reviews are positive against 100% of Conversion Calculator's.
Construction Master Pro Calc ships an update every 3 weeks, Conversion Calculator every 5 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.
| Parameter | Construction Master Pro Calc | Conversion Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (40K ratings) | 4.8 (157 ratings) |
| Positive reviews | 60.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 40K — better | 157 |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #46 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 111 MB | 7 MB |
| Age rating | 12+ | 4+ |
| Developer | Calculated Industries | Collins Cheruiyot |
Customer experience
Construction Master Pro Calc
Conversion Calculator
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
Conversion Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Construction Master Pro Calc
- 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
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- 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
Conversion Calculator
- Unlimited access forever$8.99
Questions
Is Construction Master Pro Calc free?
Is Conversion Calculator free?
Which has better reviews, Construction Master Pro Calc or Conversion Calculator?
Do Construction Master Pro Calc or Conversion Calculator have ads?
Which is updated more often, Construction Master Pro Calc or Conversion Calculator?
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