Comparison

Construction Master 5 Calc vs Stair Calculator

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

Head to head
About

Construction Master 5 Calc

This app is a powerful feet-inch-fraction calculator designed for construction professionals. It offers advanced calculation capabilities for layouts, bids, and estimates, simplifying complex measurements and conversions for enhanced project accuracy and efficiency.

Highlights
  • Feet-inch-fraction calculations
  • Right angle and rafter calculations
  • Area and volume solutions
  • Board feet and cost per unit
  • Dimensional math and conversions
  • Save or email calculations
  • Context-sensitive help
Features
Read full description

FREE Try Before You Buy trial, your App Store account is not charged by Apple during the free trial. Introducing the Construction Master 5, an innovative feet-inch-fraction builder's calculator that revolutionizes project efficiency and accuracy. For over thirty years, this award-winning tool has been a vital asset in North America's construction industry, trusted by professionals for its precision and reliability. The Construction Master 5 was built for professionals, including Builders, Contractors, Designers, Fabricators, Framers, Carpenters, Tradesmen, and Advanced Do-It-Yourselfers. ----- VERSATILE FUNCTIONALITY FOR CONSTRUCTION PROFESSIONALS ----- • Tailored to meet the needs of Builders, Contractors, and Designers • Essential for Fabricators and Framers/Carpenters • Invaluable for Tradesmen across specialties • Perfect for Advanced Do-It-Yourselfers requiring precise measurements • Aim to enhance speed, accuracy, and productivity in dimension-focused projects ----- OPTIMIZED FOR MOBILE DEVICES ----- • Compatible with both iPhone and iPad • Replicates the trusted functions of our traditional handheld calculators • Enhanced with exclusive features for mobile users • User-friendly design with a comprehensive User’s Guide • Includes Searchable help and a 'press and hold' feature for instant help on functions, supported by tutorial videos ----- ADVANCED CALCULATION CAPABILITIES ----- • Equipped with a robust core engine from Calculated Industries • Assures unmatched reliability and precision • Perfect for construction or DIY projects requiring exact measurements • Offers powerful built-in solutions for layouts, plans, bids, and estimates • Works in and converts between various dimensional formats, including imperial and metric units ----- COMPREHENSIVE BUILT-IN SOLUTIONS ----- • Extensive dimensional math and conversion capabilities • Features complete right angle and rafter calculations • Includes area and volume solutions for square, cubic, and circular calculations • Special functions like Board Feet, Cost per Unit, and Advanced Paperless Tape • User-definable preferences and memory function for personalized use ----- ENHANCED APP FEATURES ----- • Entry-editing Backspace Key for easy corrections • Context-sensitive help is available for each function • Ability to save or email calculations and outputs like cut lists • Facilitates complex calculations with ease • Designed for efficient use in the field, office, or on the go With the Construction Master 5, take your construction and DIY projects to the next level of efficiency and precision. This tool not only simplifies complex calculations but also brings a new level of professionalism and accuracy to your work. Whether working on the job site, in the office or tackling a home project, the Construction Master 5 is your indispensable partner, ensuring that every measurement and calculation is on point. Upgrade your toolkit with the Construction Master 5 and experience the future of construction and project planning today. SUBSCRIPTION INFORMATION Your Free Trial period is free of charge. Subscriptions offered will automatically renew at the end of the chosen period. Upon purchase confirmation and completion of a free trial, payment will be charged to your Apple account. The subscription will automatically renew unless auto-renew is turned off or the subscription is canceled in settings at least one day (24 hours) before the subscription period ends. You can manage your subscription and turn off auto-renewal in your Apple account Settings > Account (Apple ID) > Subscriptions. TRADEMARKS Construction Master® and Calculated Industries® are registered trademarks of Calculated Industries, Inc. Copyright 2024

About

Stair Calculator

This app calculates essential parameters for stair construction, offering flexibility in input and providing multiple step set options. It supports various units and allows results to be easily copied.

Highlights
  • Calculate stair construction parameters
  • Flexible input for Run or Total Run
  • Determine largest and smallest step sets
  • Support for various units
  • Copy results to clipboard
Features
Read full description

Stair Calculator helps you calculate and compare staircase dimensions. FEATURES • Calculate using Run, Total Run, or Stair Angle • Enter a specific number of Runs or explore all calculated options • Support Metric and Imperial units • View detailed measurements and stair diagrams • Export results as a PDF or image • Copy results to the clipboard IMPORTANT Results are generated based on user-provided values and general calculation models. The app is intended for reference and educational purposes only. Please verify all measurements, local building requirements, and safety standards before actual construction. SUBSCRIPTION This subscription package offers unlimited access to all app features throughout the subscription period. • Payment will be charged to your Apple Account at confirmation of purchase. • The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your Apple Account will be charged for renewal within 24 hours before the end of the current period, and the renewal cost will be identified. • Subscriptions may be managed and auto-renewal may be turned off in your Apple Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. PRIVACY POLICY https://13520178.github.io/StairCalc/policy.html TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ CONTACT If you have any questions or suggestions, please contact us. Email: phannhatd@gmail.com

Screenshots

Construction Master 5 Calc4 screens
Stair Calculator3 screens

Verdict

The call

The clearest difference is review sentiment: Construction Master 5 Calc at 68% against Stair Calculator's 21%. Construction Master 5 Calc also leads on rating (4.8 vs 4.1) and ratings volume (13K vs 738). On price, update cadence, ads and in-app purchases 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 5 Calc sells 2 in-app purchases, starting at $3.99 per month and Stair Calculator sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Construction Master 5 Calc holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Construction Master 5 Calc has 13K ratings behind it against 738, so its average is the more settled of the two. Written reviews point the same way: 68% of Construction Master 5 Calc's written reviews are positive against 21% of Stair Calculator's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 7 level
Construction Master 5 Calc versus Stair Calculator: the parameters behind the verdict, then further details
ParameterConstruction Master 5 CalcStair Calculator
PriceFreeFree
Rating4.8 (13K ratings) — better4.1 (738 ratings)
Positive reviews67.7% of reviews — better21.4% of reviews
Number of ratings13K — better738
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#175 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size73 MB1 MB
Age rating12+4+
DeveloperCalculated IndustriesPhan Nhat Đang

Customer experience

Construction Master 5 Calc

All ratings13,064 ratings
Positive96.3%
Neutral1.2%
Negative2.4%
Written reviews164 reviews
Positive67.7%
Neutral4.3%
Negative28.0%

Stair Calculator

All ratings738 ratings
Positive77.2%
Neutral5.0%
Negative17.8%
Written reviews28 reviews
Positive21.4%
Neutral7.1%
Negative71.4%

User reviews

Construction Master 5 Calc

From 13K App Store ratings

What we love

  • 👍 Convenient to have on phone
  • 💡 Useful for construction work
  • 🚀 Performs like physical calculator
  • 👍 Helpful for calculations and estimates
  • 👍 Great tool for framers and carpenters

Room to improve

  • 💰 Expensive subscription model
  • 🤔 Prefer one-time purchase option
  • 🤔 Subscription cost as much as physical calculator
  • 🤔 Should allow trial before subscription
  • 🐛 Issues with restoring purchases

Stair Calculator

From 738 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Helpful information
  • 🚀 Provides useful calculations

Room to improve

  • 🐛 Doesn't work as expected
  • 🔒 No way to cancel subscription
  • 🔒 Difficult to cancel trial
  • 🤬 Obnoxious ads
  • 🤬 Misleading as a learning tool

Bugs and requests

Construction Master 5 Calc

Reported bugs

3 issues
  • App not working without internet connection
  • Crashes or freezes on some devices
  • Login/purchase issues when switching devices

Requested features

4 requests
  • Add Apple Watch support
  • Offer one-time purchase option
  • Improve compatibility with older devices
  • Provide a free version with limited features

Stair Calculator

Reported bugs

2 issues
  • Subscription numbers don't add up
  • Doesn't provide promised features after purchase

Requested features

3 requests
  • Option to uninstall app
  • Ability to calculate run based on rise and landing space
  • Provide more detailed diagrams and visuals

In-app purchases

2 purchases

Construction Master 5 Calc

Subscriptions2
  • 1 Month Full Access14 Days trial3 variants$3.991 Month
  • 1 Year Full Access14 Days trial3 variants$34.991 Year
2 purchases

Stair Calculator

Subscriptions1
  • Annual Premium Package7 Days trial$9.991 Year
One-time1
  • Unlock all features$5.99

Questions

Is Construction Master 5 Calc free?
Construction Master 5 Calc is free to download, with in-app purchases available.
Is Stair Calculator free?
Stair Calculator is free to download, with in-app purchases available.
Which has better reviews, Construction Master 5 Calc or Stair Calculator?
Construction Master 5 Calc is rated higher. Construction Master 5 Calc averages 4.8 out of 5 from 13K ratings, while Stair Calculator averages 4.1 from 738 ratings.
Do Construction Master 5 Calc or Stair Calculator have ads?
Neither Construction Master 5 Calc nor Stair Calculator shows ads.
Which is updated more often, Construction Master 5 Calc or Stair Calculator?
Construction Master 5 Calc ships an update every 3 months, and Stair Calculator every 3 months. Most recently, Construction Master 5 Calc was updated on September 24, 2026 and Stair Calculator on September 18, 2026.

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