Construction Master Pro Calc vs Square Root Calculator SDG
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
Square Root Calculator SDG
This utility app provides a straightforward way to calculate the square root of any number. Its simple interface makes it easy to use for quick calculations.
- Calculate square roots
- Easy to use interface
- Quick calculations
- Supports all numbers
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Square Root Calculator helps you to calculate the square root of the number in an easy way. Square Root Calculator is great application and easy to use.
Screenshots
Verdict
Construction Master Pro Calc and Square Root Calculator SDG both sit at 4.8 stars, but that hides the real split: 100% of Square Root Calculator SDG's written reviews are positive against 60% of Construction Master Pro Calc's. Square Root Calculator SDG also leads on in-app purchases (none vs 20) and iOS requirement (11.0 vs 15.0). Construction Master Pro Calc's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 12 months). On price, rating 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
Both are free to download. Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month. Square Root Calculator SDG asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Construction Master Pro Calc against 4.8 for Square Root Calculator SDG. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 4, 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 Square Root Calculator SDG's.
Construction Master Pro Calc ships an update every 3 weeks, Square Root Calculator SDG every 12 months. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.
| Parameter | Construction Master Pro Calc | Square Root Calculator SDG |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (40K ratings) | 4.8 (4 ratings) |
| Positive reviews | 59.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 40K — better | 4 |
| Update frequency | Every 3 weeks — better | Every 12 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Best chart rank | #45 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 111 MB | 12 MB |
| Age rating | 12+ | 4+ |
| Developer | Calculated Industries | SDG CODE DOO NIS |
Customer experience
Construction Master Pro Calc
Square Root Calculator SDG
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
Square Root Calculator SDG
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
Square Root Calculator SDG
No in-app purchases
Questions
Is Construction Master Pro Calc free?
Is Square Root Calculator SDG free?
Which has better reviews, Construction Master Pro Calc or Square Root Calculator SDG?
Do Construction Master Pro Calc or Square Root Calculator SDG have ads?
Which is updated more often, Construction Master Pro Calc or Square Root Calculator SDG?
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