Comparison

Construction Master Pro Calc vs Trimble

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

Trimble

This cloud-based platform facilitates collaboration for construction projects. It allows stakeholders to share, comment on, and manage project documents, photos, drawings, and 3D models across all project phases. Access information seamlessly on desktop, web, or mobile, even offline.

Highlights
  • Cloud-based project collaboration
  • Document, photo, drawing, and 3D model sharing
  • Offline access for field professionals
  • High-performance 3D model viewer
  • Task management (ToDos)
  • Cross-platform accessibility
Features
Read full description

Trimble Connect is a project collaboration platform built for construction industry. Project stakeholders can easily share, comment on, and manage the project documents, photos, drawings, and 3D models through the cloud across the design, build, and operate phases of a project. This information can be seamlessly accessed across Desktop, Web, or Mobile environments depending on a stakeholder’s role or tasks. Trimble Connect Mobile App is simple to use and specifically designed for professionals working in remote or field environments such as the construction job site manufacturing facilities, or in project meetings or presentations. It is designed for one click access to the specific information needed to complete tasks that have been organized by the back office using Trimble Connect for Web or Desktop. Project information and files can be stored locally in the mobile application for offline use where internet access isn’t always accessible. Any new Tasks, called ToDos, can be created or modified while offline, then synchronized to the cloud once reconnected to the internet. One key differentiating feature within Trimble Connect Mobile App is its high-performance 3D model viewer. Large complex detailed construction models created by a variety of different Building Information Modeling (BIM) applications in multiple formats (IFC, SKP, RVT, DWG, etc.) can be quickly loaded, overlaid, and easily navigated through in a simple intuitive touch based interface. Users can delete their accounts through https://myprofile.trimble.com/home. Relevant documentation from Trimble is available here - https://help.trimble.com/s/article/How-do-I-delete-my-account.

Screenshots

Construction Master Pro Calc4 screens
Trimble4 screens

Verdict

The call

The clearest difference is rating: Construction Master Pro Calc at 4.8 against Trimble's 3.4. Construction Master Pro Calc also leads on review sentiment (60% vs 22%) and ratings volume (40K vs 29). Trimble's advantage is in-app purchases (none vs 20). On price, update cadence, 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. Trimble 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 3.4. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 29, 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 22% of Trimble's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 5 level
Construction Master Pro Calc versus Trimble: the parameters behind the verdict, then further details
ParameterConstruction Master Pro CalcTrimble
PriceFreeFree
Rating4.8 (40K ratings) — better3.4 (29 ratings)
Positive reviews59.9% of reviews — better21.9% of reviews
Number of ratings40K — better29
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#44 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size111 MB176 MB
Age rating12+4+
DeveloperCalculated IndustriesTrimble Inc.

Customer experience

Construction Master Pro Calc

All ratings39,604 ratings
Positive96.4%
Neutral1.2%
Negative2.3%
Written reviews322 reviews
Positive59.9%
Neutral5.3%
Negative34.8%

Trimble

All ratings29 ratings
Positive55.2%
Neutral10.3%
Negative34.5%
Written reviews64 reviews
Positive21.9%
Neutral9.4%
Negative68.8%

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

Trimble

Not enough reviews yet to summarise bugs or requests.

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

Trimble

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 Trimble free?
Trimble is free to download, with no in-app purchases.
Which has better reviews, Construction Master Pro Calc or Trimble?
Construction Master Pro Calc is rated higher. Construction Master Pro Calc averages 4.8 out of 5 from 40K ratings, while Trimble averages 3.4 from 29 ratings.
Do Construction Master Pro Calc or Trimble have ads?
Neither Construction Master Pro Calc nor Trimble shows ads.
Which is updated more often, Construction Master Pro Calc or Trimble?
Construction Master Pro Calc ships an update every 3 weeks, and Trimble every 3 weeks. Most recently, Construction Master Pro Calc was updated on October 15, 2026 and Trimble on October 9, 2026.

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