Comparison

Construction Master 5 Calc vs Premix Calculator (2 Stroke)

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

Premix Calculator (2 Stroke)

Easily calculate the correct fuel-to-oil ratio for your 2-stroke engine. Input your desired mix and fuel amount to get the precise oil quantity needed, preventing engine damage and ensuring smooth operation. Includes helpful articles and guides.

Highlights
  • Calculate optimal fuel-to-oil mix ratio
  • Use premix chart for quick oil quantity lookup
  • Read informative articles on 2-stroke premixing
  • Eliminate guesswork in fuel mixing
  • Prevent engine damage
Features
Read full description

Premix Calculator (2 Stroke) is a must-have app for 2-stroke engine owners and enthusiasts. Quickly and accurately calculate the right fuel-to-oil mix ratio for your motorcycle, dirt bike, boat, or small engine. Simply input your desired ratio and fuel amount, and the app delivers the exact oil quantity needed. Eliminate guesswork, prevent engine damage, and keep your ride running smoothly with this easy-to-use, reliable premix calculator. With our Premix Calculator (2 Stroke) app you can do the following: - Calculate the optimal fuel-to-oil mix ratio for your 2-stroke engine - Use the premix chart to quickly find the right oil quantity for a specific volume of gasoline - Read informative articles and guides related to 2-stroke engine premixing

Screenshots

Construction Master 5 Calc4 screens
Premix Calculator (2 Stroke)4 screens

Verdict

The call

The clearest difference is rating: Construction Master 5 Calc at 4.8 against Premix Calculator (2 Stroke)'s 4.3. Construction Master 5 Calc also leads on ratings volume (13K vs 11) and chart position (#199 vs unranked). Premix Calculator (2 Stroke)'s advantage is iOS requirement (13.0 vs 15.0). 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 Premix Calculator (2 Stroke) sells 1 one-off in-app purchase. 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 4.3. That said, the two scores are not equally well evidenced: Construction Master 5 Calc has 13K ratings behind it against 11, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 7 level
Construction Master 5 Calc versus Premix Calculator (2 Stroke): the parameters behind the verdict, then further details
ParameterConstruction Master 5 CalcPremix Calculator (2 Stroke)
PriceFreeFree
Rating4.8 (13K ratings) — better4.3 (11 ratings)
Positive reviews67.9% of reviews—
Number of ratings13K — better11
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#199 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size73 MB34 MB
Age rating12++17
DeveloperCalculated IndustriesArsosa Network Inc.

Customer experience

Construction Master 5 Calc

All ratings13,376 ratings
Positive96.3%
Neutral1.2%
Negative2.5%
Written reviews165 reviews
Positive67.9%
Neutral4.2%
Negative27.9%

Premix Calculator (2 Stroke)

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%

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

Premix Calculator (2 Stroke)

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
1 purchases

Premix Calculator (2 Stroke)

One-time1
  • Remove Ads Forever$3.99

Questions

Is Construction Master 5 Calc free?
Construction Master 5 Calc is free to download, with in-app purchases available.
Is Premix Calculator (2 Stroke) free?
Premix Calculator (2 Stroke) is free to download, with in-app purchases available.
Which has better reviews, Construction Master 5 Calc or Premix Calculator (2 Stroke)?
Construction Master 5 Calc is rated higher. Construction Master 5 Calc averages 4.8 out of 5 from 13K ratings, while Premix Calculator (2 Stroke) averages 4.3 from 11 ratings.
Do Construction Master 5 Calc or Premix Calculator (2 Stroke) have ads?
Neither Construction Master 5 Calc nor Premix Calculator (2 Stroke) shows ads.
Which is updated more often, Construction Master 5 Calc or Premix Calculator (2 Stroke)?
Construction Master 5 Calc ships an update every 3 months, and Premix Calculator (2 Stroke) every 3 months. Most recently, Construction Master 5 Calc was updated on October 24, 2026 and Premix Calculator (2 Stroke) on October 21, 2026.

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