Comparison

Construction Master 5 Calc vs WatchGas

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

WatchGas

This application allows users to manage and configure their WatchGas SST1 and SST4 devices. It provides essential tools for device setup and operational control.

Highlights
  • Device management
  • Device configuration
  • SST1 support
  • SST4 support
  • Compliance tools
Read full description

WatchGas compliance mobile application manage and configurate yours WatchGas SST1 and SST4

Screenshots

Construction Master 5 Calc4 screens
WatchGas3 screens

Verdict

The call

The clearest difference is in-app purchases: WatchGas at none against Construction Master 5 Calc's 6. WatchGas also leads on update cadence (every 3 weeks vs every 3 months) and rating (5.0 vs 4.8). Construction Master 5 Calc's advantage is ratings volume (13K vs 1) and chart position (#183 vs unranked). On price, ads, device support and iOS requirement 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. WatchGas asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

WatchGas holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Construction Master 5 Calc has 13K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Construction Master 5 Calc ships an update every 3 months, WatchGas every 3 weeks. The most recent releases landed on September 24, 2026 and September 6, 2026 respectively.

Scorecard6 real differences · 5 level
Construction Master 5 Calc versus WatchGas: the parameters behind the verdict, then further details
ParameterConstruction Master 5 CalcWatchGas
PriceFreeFree
Rating4.8 (13K ratings)5.0 (1 ratings) — better
Positive reviews67.7% of reviews—
Number of ratings13K — better1
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#183 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.5
Further details — not scored
Size73 MB49 MB
Age rating12+4+
DeveloperCalculated IndustriesWatchGas

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%

WatchGas

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

WatchGas

Not enough reviews yet to summarise bugs or requests.

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
None

WatchGas

No in-app purchases

Questions

Is Construction Master 5 Calc free?
Construction Master 5 Calc is free to download, with in-app purchases available.
Is WatchGas free?
WatchGas is free to download, with no in-app purchases.
Which has better reviews, Construction Master 5 Calc or WatchGas?
WatchGas is rated higher. Construction Master 5 Calc averages 4.8 out of 5 from 13K ratings, while WatchGas averages 5.0 from 1 ratings.
Do Construction Master 5 Calc or WatchGas have ads?
Neither Construction Master 5 Calc nor WatchGas shows ads.
Which is updated more often, Construction Master 5 Calc or WatchGas?
Construction Master 5 Calc ships an update every 3 months, and WatchGas every 3 weeks. Most recently, Construction Master 5 Calc was updated on September 24, 2026 and WatchGas on September 6, 2026.

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