Comparison

Construction Calc Pro Lite vs PowerOne calculator

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

Head to head
About

Construction Calc Pro Lite

This calculator app is designed for construction professionals, offering specialized functions for measurements in feet, inches, and fractional inches. It includes modules for material estimates, conversions, area and volume calculations, trigonometry, and stair design, transforming your device into a construction computer.

Highlights
  • Feet, inches, and fractional inch measurements
  • Material estimation modules
  • Area and volume calculations
  • Trigonometry and triangle solver
  • Stair and crown moulding calculators
  • Fraction reduction and conversion
  • Estimate transfer and email
Features
Read full description

Construction Calc Pro turns your device into an advanced jobsite computer. Built specifically for contractors, builders, carpenters, and project supervisors, it combines full fractional-inch dimensional math with integrated material takeoffs and project estimation sheets. Eliminate expensive standalone handhelds—run your framing cuts, stair layouts, material orders, and job estimates right from your pocket. CORE DIMENSIONAL MATH & CONVERSIONS - Calculate in feet, inches, and fractional inches down to 1/64 inch - Full math support: Add, subtract, multiply, divide, powers, and square roots with mixed units - Instant conversions: Fractions to decimals, square and cubic footage, metric to imperial, angles, and temperatures - Automatic fraction reduction to lowest common denominators - Split-screen view displays active calculations, measurements, and memory registers simultaneously - 50 shared memory registers accessible across all specialized modules PROJECT ESTIMATION & MATERIAL TAKEOFFS - Instant takeoffs for concrete pours, block walls, drywall sheets, paint, tile, and lumber - Calculate surface areas and volumes for standard, angled, and complex compound shapes - Export to a running job estimate sheet to tally project totals - Email itemized takeoffs directly to clients, suppliers, or your crew right from the site ROOF, STAIRS & STRUCTURAL LAYOUT - Stairs & Stringers: Solve total rise, run, unit rise, unit run, riser and tread counts, stringer length, and minimum stairwell openings with scale-drawn diagrams - Rafters & Framing: Integrated right-angle trigonometry solves slope, pitch, common rafters, hips, and valleys with visual graphic feedback - Crown Moulding: Calculate precise miter and bevel saw settings for any wall angle and any spring angle - Arcs & Circles: Solve radius, circumference, sector area, arc length, and segments fast Designed for professional trades who need reliable, jobsite-tested calculations without ads, subscriptions, or bulky handheld devices. Built-in help guides and instructions included for every module.

About

PowerOne calculator

This app offers a powerful calculator with hundreds of pre-built templates for finance, engineering, and more. Users can also create custom calculations for specific needs, ensuring accuracy and speed for repetitive tasks. Access your calculations across devices, online or offline.

Highlights
  • Hundreds of pre-built calculation templates
  • Create custom calculation templates
  • Standard and RPN calculator modes
  • Cross-device syncing (iPhone, iPad, Mac, Web)
  • Offline access
  • Template sharing for teams
  • Customizable themes
Features
Read full description

Download hundreds of calculations or create your own with PowerOne® calculator. • Several-time Apple staff pick + Best of 2010 • "The crème de la crème of calculators" – AppAdvice • "Incredibly powerful tool for calculations of all kinds." – Smokin' Apps • "You need this calculator. It's miles better than the competition." – Robert Burns • "… sets the benchmark for other calculators to reach." – Fred Swan • "Not sure how I could do my job without PowerOne." – Arvid Martin • "A legend. The best … calculator app I have ever seen." – Worldwide Tech • "… PowerOne shines." – The Mac Observer BENEFITS/FEATURES • Quick and accurate. Templates act similar to locked-down, mini-spreadsheets that increase accuracy and speed for repetitive calculations. Enter the data you know. PowerOne will calculate the rest. • For those one-off calculation needs, PowerOne provides a powerful standard and RPN calculator. Over a hundred functions to help with virtually anything: basic math, powers, logs, trigonometry, probability, programmer’s math, fractions, and Imperial and metric units. • Get up and running fast with hundreds of pre-created templates in PowerOne's extensive library. Covers everything: finance, conversions, real estate, business, investing, construction, engineering, health, fitness, and more. • While some calculations are common, there are millions more specific to you or your business. With PowerOne, it is easy to create powerful templates of your own using our intuitive language. You, your team, and your customers can perform their own calculations without ever having to think about the math. • Access PowerOne everywhere. Whether on the go with your iPhone or iPad, on your M1 Mac, or at your desk on the web, PowerOne makes sure your critical calculations are available at your fingertips, offline or on. • Keep everyone on the same page. Share your templates with your team and customers, ensuring that everyone is performing the same error-free calculations every single time. • Highly customizable. Go beyond templates with expanded calculator functions and themes! Match your mood and make it the product you want to use every day. After more than 25 years and over 30 million software calculators distributed, PowerOne has earned its reputation for high-quality apps. We'd love to hear from you. Please visit us at https://power.one, or share ideas, get help, and resolve problems by emailing us at help@power.one. PRIVACY PowerOne uses anonymous accounts so we don't know who you are but still provide great benefits such as syncing across devices. AVAILABLE FOR FREE • Run PowerOne offline on your iPhone, iPad or M1 Mac • Run PowerOne online at https://power.one • Full-featured standard and RPN calculator (iOS only) • Access to over 200 library templates • Sample creating your own templates • Share template results via email • Go light or dark with your choice of two themes • Keep your devices in sync automatically AVAILABLE IN PREMIUM • Over 300 library templates • Create your own templates without limit • Share templates with other Premium subscribers • Access any of the built-in extensions to share or save your results • Choose from 12 themes to customize PowerOne • Support independent iOS developers and your favorite calculator's development! SUBSCRIPTION DETAILS PowerOne is free to use with some features available via monthly or annual subscription. Payment will be charged to your iTunes account at confirmation of purchase and your subscription will automatically renew unless auto-renew is disabled at least 24 hours before the end of the current subscription period. Automatic renewals will be charged at the same price you were originally charged for the subscription. Please note that subscriptions can be managed by choosing that option via Account within PowerOne or via Account Settings on the App Store after purchase. Terms: https://power.one/terms Privacy Policy: https://power.one/privacy

Screenshots

Construction Calc Pro Lite4 screens
PowerOne calculator4 screens

Verdict

The call

Construction Calc Pro Lite and PowerOne calculator both sit at 4.8 stars, but that hides the real split: 50% of PowerOne calculator's written reviews are positive against 10% of Construction Calc Pro Lite's. PowerOne calculator also leads on ads (none vs shown) and ratings volume (806 vs 5). Construction Calc Pro Lite's advantage is in-app purchases (none vs 2). On price, rating, update cadence 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. PowerOne calculator sells 2 in-app purchases, starting at $2.99 per month. Construction Calc Pro Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Construction Calc Pro Lite holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: PowerOne calculator has 806 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 10% of Construction Calc Pro Lite's written reviews are positive against 50% of PowerOne calculator's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard5 real differences · 5 level
Construction Calc Pro Lite versus PowerOne calculator: the parameters behind the verdict, then further details
ParameterConstruction Calc Pro LitePowerOne calculator
PriceFreeFree
Rating4.8 (5 ratings) — better4.6 (806 ratings)
Positive reviews9.5% of reviews50.5% of reviews — better
Number of ratings5806 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size89 MB6 MB
Age rating4+4+
DeveloperSnappy Appz Inc.Crafty Weasel, LLC

Customer experience

Construction Calc Pro Lite

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews21 reviews
Positive9.5%
Neutral0.0%
Negative90.5%

PowerOne calculator

All ratings803 ratings
Positive91.9%
Neutral1.7%
Negative6.4%
Written reviews103 reviews
Positive50.5%
Neutral5.8%
Negative43.7%

Bugs and requests

Construction Calc Pro Lite

Not enough reviews yet to summarise bugs or requests.

PowerOne calculator

Reported bugs

4 issues
  • Calculator not accessible after update
  • Templates disappearing after update
  • Incompatibility with iOS 16
  • Calculation errors in certain templates

Requested features

4 requests
  • Landscape mode support
  • Ability to reorganize templates
  • Restore previous version's interface
  • Retain access to purchased features

In-app purchases

None

Construction Calc Pro Lite

No in-app purchases

2 purchases

PowerOne calculator

Subscriptions2
  • Monthly Premium Subscription$2.991 Month
  • Annual Premium Subscription$19.991 Year

Questions

Is Construction Calc Pro Lite free?
Construction Calc Pro Lite is free to download, with no in-app purchases.
Is PowerOne calculator free?
PowerOne calculator is free to download, with in-app purchases available.
Which has better reviews, Construction Calc Pro Lite or PowerOne calculator?
Construction Calc Pro Lite is rated higher. Construction Calc Pro Lite averages 4.8 out of 5 from 5 ratings, while PowerOne calculator averages 4.6 from 806 ratings.
Do Construction Calc Pro Lite or PowerOne calculator have ads?
Construction Calc Pro Lite shows ads; PowerOne calculator does not.
Which is updated more often, Construction Calc Pro Lite or PowerOne calculator?
Construction Calc Pro Lite ships an update every 3 months, and PowerOne calculator every 3 months. Most recently, Construction Calc Pro Lite was updated on November 1, 2026 and PowerOne calculator on November 2, 2026.

Other comparisons