Comparison

Construction Calculator vs Foundation Squaring Calculator

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

Head to head
About

Construction Calculator

This app is a powerful calculator designed for construction and woodworking professionals, as well as students. It simplifies calculations involving feet, inches, and fractions, offering conversions between various measurement units and displaying equations and results simultaneously. Advanced features are available through optional in-app purchases.

Highlights
  • Decimal to fraction converter
  • Fraction to decimal conversion
  • Simultaneous equation and result display
  • Advanced editing capabilities
  • Today Screen integration
  • Support for multiple dimensional formats
Features
Read full description

Award Winning Feet Inch Fraction Construction Calculator for iPhone and iPad. Designed with simplicity, usability and beauty in mind! FEATURES: - Elegant & Intuitive interface - Decimal to fraction converter - Fraction to decimal conversion - Displays both the equation & the result at the same time - Advanced editing by easily going back and forth - Can be added to Today Screen Ideal for those who work in construction, woodworking and for students to check up their homework! If you are looking for more advanced features you can upgrade to one or more of the following: - Stairs Calculator - Common Rafter Calculator - Hip/Valley Rafter Calculator - Triangle Calculator - Circular Calculator - Arc Calculator - Work in and convert between all building dimensional formats: feet-inch-fractions, inch fraction, yards, decimal feet (10th, 100th), decimal inches and metric (km, m, cm, mm) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Foundation Squaring Calculator

Features
Currently charting
Read full description

Get the corners right before you pour. Enter your length and width and the app gives you the diagonal a square layout has to measure — in feet and inches to the nearest 1/16", or in meters. Pull both corner-to-corner measurements, type them in, and it tells you whether you're square and exactly how far to move a corner if you aren't. WHAT IT DOES • REQUIRED DIAGONAL — the measurement both corner-to-corner pulls must match. Shown as a tape reading (14' 1 11/16") and as a decimal, plus perimeter for your string line and enclosed area. • OFF-SQUARE FIX — enter the two diagonals you actually measured and get a straight answer: which diagonal is long, and how far to draw a corner in to bring the layout square. Move one corner the full amount, or split it between both ends. No guessing, no trial and error. • L-SHAPED FOOTPRINTS — describe the overall size and the cut-out corner. The app splits the footprint into two rectangles and gives you a diagonal for each, plus a confirmation shot to the inside corner so you know the notch landed right. Rotate the drawing to match what's staked on the ground. • YOUR TOLERANCE — decide what counts as square: 1/16", 1/8", 1/4", 1/2", or 1–12 mm. Tight formwork and a garage pad don't need the same standard. BUILT FOR THE JOB SITE • Feet-and-inches entry with real fractions — type 1 11/16, or 11/16, or 1.5 • Round results to 1/8", 1/16", or 1/32" to match the tape in your pocket • Full metric mode • Scale drawings that show which way the layout leans and which diagonal to pull • Large, high-contrast numbers; light and dark themes • Your measurements are still there when you come back to the phone • Works with no signal — every calculation runs on the phone, so a basement or a rural lot is fine • In English and Spanish WHO IT'S FOR Concrete and foundation crews, framers, deck and shed builders, fence and post-hole layout, landscapers setting patios and pads, and anyone who has ever pulled a diagonal twice and gotten two different numbers. THE MATH A rectangle is square when both diagonals equal the square root of length squared plus width squared — the 3-4-5 rule, generalized to any size. When the diagonals disagree, the layout has racked into a parallelogram, and the exact correction is the long diagonal minus that target. For small errors this comes out to the familiar "half the difference" rule of thumb, but it stays correct when a layout is badly out. Layout guidance only. Always confirm critical dimensions against the stamped drawings and your local code before you pour. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Construction Calculator4 screens
Foundation Squaring Calculator4 screens

Verdict

The call

The clearest difference is price: Construction Calculator at Free against Foundation Squaring Calculator's $4.99. Foundation Squaring Calculator's advantage is in-app purchases (none vs 9) and chart position (#194 vs unranked). On update cadence, 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

Construction Calculator is free to download; Foundation Squaring Calculator costs $4.99 up front. Construction Calculator sells 8 in-app purchases, starting at $4.99 per month. Foundation Squaring Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Construction Calculator ships an update every 5 days, Foundation Squaring Calculator weekly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 8 level
Construction Calculator versus Foundation Squaring Calculator: the parameters behind the verdict, then further details
ParameterConstruction CalculatorFoundation Squaring Calculator
PriceFree — better$4.99
Rating4.7 (672 ratings) — better—
Positive reviews53.7% of reviews—
Number of ratings672 — better—
Update frequencyEvery 5 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank—#194 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size50 MB37 MB
Age rating4+4+
DeveloperxNeat.comAlexander Riggs

Bugs and requests

Construction Calculator

Reported bugs

3 issues
  • Calculation errors and incorrect results
  • Freezing and crashing on certain devices
  • Compatibility issues with newer OS versions

Requested features

4 requests
  • Bring back fraction display in results
  • Allow offline use without subscription
  • Add more construction-specific tools
  • Improve user interface and usability

Foundation Squaring Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Construction Calculator

Subscriptions2
  • Construction Calculator3 Days trial$4.991 Month
  • Construction Calculator7 Days trial$39.991 Year
One-time6
  • Themes$1.99
  • Calculator Plus$3.99
  • Rafter$4.99
Show 3 more
  • Stair Calculator$4.99
  • Fraction Calculator$9.99
  • Construction Calculator2 variants$14.99
None

Foundation Squaring Calculator

No in-app purchases

Questions

Is Construction Calculator free?
Construction Calculator is free to download, with in-app purchases available.
Is Foundation Squaring Calculator free?
Foundation Squaring Calculator costs $4.99, with no in-app purchases.
Do Construction Calculator or Foundation Squaring Calculator have ads?
Neither Construction Calculator nor Foundation Squaring Calculator shows ads.
Which is updated more often, Construction Calculator or Foundation Squaring Calculator?
Construction Calculator ships an update every 5 days, and Foundation Squaring Calculator weekly. Most recently, Construction Calculator was updated on October 26, 2026 and Foundation Squaring Calculator on October 25, 2026.

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