# Construction Master Pro Calc — Feet Inch Fraction Calculator > Advanced construction math calculator for dimensional calculations and project planning. (iPhone/iPad app by Calculated Industries.) - Source: https://appshunter.io/ios/app/construction-master-pro-calc/id370406446 (this page in markdown: same URL + `.md`) - Developer: [Calculated Industries](https://appshunter.io/developer/370406449) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.80/5 from 39,372 App Store ratings · 316 written reviews indexed - Age rating: 12+ - Requires: iOS 15.0 · 110 MB - Languages: American English - Released: 2010-05-05 - Data updated: 2026-08-28 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews.md ## What is Construction Master Pro Calc? 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 ## Key features - 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 ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | 1 Year Full Access | $29.99 | per year | | 1 Month Full Access | $3.69 | per month | | 1 Month Full Access | $3.69 | per month | | 6 Months Full Access | $19.99 | per 6 months | | 1 Year Full Access | $29.99 | per year | | 1 Month Full Access | $4.99 | per month | | 1 Year Full Access | $39.99 | per year | | 1 Year Full Access | $39.99 | per year | | 1 Month Full Access | $4.99 | per month | | 1 Year Full Access | $39.99 | per year | | 1 Month Full Access | $4.99 | per month | | 1 Year Full Access | $39.99 | per year | | 1 Month Full Access | $4.99 | per month | | 1 Month Full Access | $4.99 | per month | | 1 Year Full Access | $39.99 | per year | | 1 Year Full Access | $19.99 | per year | | CMPro Full Access | $9.99 | per year | | 1 Month Full Access | $4.99 | per month | | 1 Year Full Access | $39.99 | per year | | 1 Year Full Access | $39.99 | per year | ## Chart rankings - #50 in Top Grossing · Utilities (US App Store) ## What do users think of Construction Master Pro Calc? Overall sentiment: neutral **Pros** - 🚀 Convenient and always available - ⚙️ Comprehensive construction calculations - 💪 Industry-standard tool - 🔍 Accurate and reliable - 📱 Integrates well with mobile devices **Cons** - 💰 Subscription model too expensive - 🔒 Locks data behind subscription - 🔄 Forced to re-purchase after device changes - 🔍 Lacks full metric support - 🔧 Occasional UI/UX issues **Commonly reported bugs** - Crashes or freezes on certain devices - Calculation errors in some scenarios - Inconsistent behavior after updates **Most requested features** - Add metric unit support - Offer one-time purchase option - Improve backup and data transfer - Add more customization options - Enhance overall user experience ## Recent user reviews (10 of 316) All indexed reviews: https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews.md ### 5/5 — Best out there *2026-08-23, version 12.11.18* Once you use it. You’re hooked ### 5/5 — AWESOME CALCULATOR *2026-08-22, version 12.11.18* Very Handy Works Great for all types of Calculations ### 1/5 — $40 a year for a calculator? *2026-08-20, version 12.11.18* This is a trash download when there are many other apps for FREE. What got me was they didn’t spring this fee up till after download. Just be upfront and charge it for download, not a subscription. I’d give it zero stars if I could ### 5/5 — The best *2026-08-10, version 12.11.18* The best, super helpful ### 5/5 — Super tool *2026-08-10, version 12.11.18* Super tool ### 5/5 — The best Construction calculator there is without a doubt *2026-08-03, version 12.11.16* Construction master was one of the first ones out, and it still remains to be in my opinion The best there is ### 2/5 — Was nice *2026-07-18, version 12.11.12* CM Pro used to be the premier option. I bought a handheld calculator more than 10 years ago. But recently they moved to a subscription that I think is way over-priced. I also believe it’s behind the times for these reasons: 1. You can only see one number at a time, you cannot easily see what you’ve previously entered. 2. The History Tape is very hard to use, so unintuitive. 3. Cannot calculate things as simple as parentheses. 4. Saving numbers using M+ and Memory Registers is such an old-school way to do things. Phones are so much better than that. 5. With this, I decided to make my own app that’s meant to be much more intuitive. Please try my app, SteelSolve, free version is completely functional with no ads! ### 4/5 — Great tool *2026-07-16, version 12.11.12* Great tool just a little pricey. Helps get ya started for sure but just go by one when you get the $$ ### 5/5 — I *2026-07-15, version 12.11.12* Works great ### 1/5 — subscription based trash *2026-07-10, version 12.11.12* I hate downloading apps just to be met with a pay window to use anything. I would rather pay once than monthly for a calculator… ## Frequently asked questions about Construction Master Pro Calc ### What does the Construction Master Pro Calc app do? This app is a powerful calculator designed for construction professionals. It specializes in dimensional math, offering solutions for layouts, bids, estimates, and complex calculations involving feet, inches, fractions, and metric units. It aims to improve speed and accuracy in various construction tasks. ### What are the key features of this construction calculator? Key features include comprehensive dimensional math and conversions, built-in right angle and rafter solutions, area and volume calculations, full trigonometric functions, and special functions like board feet and stud calculations. It also provides a built-in user's guide with context-sensitive help and the ability to save and share calculations. ### Is the Construction Master Pro Calc app free to use? The app offers a free trial period, allowing users to try its features before purchasing. After the trial, it operates on a paid model, with the option to purchase the full functionality. Your App Store account is not charged by Apple during the free trial. ### What kind of projects is this app useful for? This app is ideal for a wide range of construction projects, including completing layouts, plans, bids, and estimates. It's particularly useful for tasks involving square-ups, rafters, stair layouts, roof calculations, drywall, siding, and any project requiring precise dimensional calculations. ### What devices is Construction Master Pro Calc compatible with? The app is designed for use on phones and tablets, leveraging the capabilities of mobile devices. It includes two apps, Construction Master Pro and Construction Master Pro Trig, both powered by the same core engine as industry-standard handheld calculators. ## Version history (last 5 releases) ### 12.11.18 — 2026-08-09 Maintenance and crash fixes. ### 12.11.17 — 2026-08-04 Compliance and maintenance updates. ### 12.11.16 — 2026-07-29 New AI AskCMPro can show you (or tell you) how to do any calculation built into CMPro, step by step. Trusted construction math, now with answers on demand. ### 12.11.12 — 2026-06-25 Thank you for checking out Ask CMPro! This update has some small changes based on your feedback - thank you! ** Announcing ** the end of Pro Tips pop-up's - all past and new Pro Tip content are incorporated directly into Help - no more "in your face" pop-ups :-) ### 12.11.11 — 2026-06-16 Thank you for checking out Ask CMPro! This update has some small changes based on your feedback - thank you! ** Announcing ** the end of Pro Tips pop-up's - all past and new Pro Tip content are incorporated directly into Help - no more "in your face" pop-ups :-) ## Apps similar to Construction Master Pro Calc | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (10,020) | Free | Utilities | | [Material Estimator Calculator](https://appshunter.io/ios/app/material-estimator-calculator/id376071081) | 4.8 (3,093) | Free | Utilities | | [Construction Master 5 Calc](https://appshunter.io/ios/app/construction-master-5-calc/id370412148) | 4.8 (13,064) | Free | Utilities | | [Feet and Inches Calculator](https://appshunter.io/ios/app/feet-and-inches-calculator/id1072241945) | 4.6 (401) | Free | Utilities | | [Feet & Inches Tape Calculator](https://appshunter.io/ios/app/feet-and-inches-tape-calculator/id1434258634) | 4.4 (9,261) | Free | Utilities | | [Pipe Trades Pro Calc](https://appshunter.io/ios/app/pipe-trades-pro-calc/id596142100) | 4.8 (4,243) | Free | Utilities | ## More apps by Calculated Industries - [Boater's Pocket Reference](https://appshunter.io/ios/app/boaters-pocket-reference/id323913317) - [Navy SEAL Fitness](https://appshunter.io/ios/app/navy-seal-fitness/id324155166) - [I.D. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*