Comparison

Calculator!! vs Construction Calculator

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

Head to head
About

Calculator!!

This advanced calculator offers a comprehensive history of your calculations and supports complex functions like fraction manipulation, angle conversions, and equation solving. It also includes specialized tools for engineers and a dice roller.

Highlights
  • Calculation history
  • Fraction manipulation
  • Angle conversions (degrees, minutes, seconds)
  • Permutation, combination, LCM, GCD
  • Quadratic and linear equation solver
  • Coordinate conversion
  • Dice roller
Features
Read full description

Calculator!! has the following additional functionality compared with most available calculators: - Shows the expression as you enter and keeps a history of your calculations (Swipe up on the screen to access the history.) - Capability of performing fraction manipulations and converting between different formats (proper, improper, and mixed fractions) and seamless integration of fraction, integer, and decimal manipulations. - Capability of inputting degrees, minutes, and seconds for angles and converting between degrees-minutes-seconds format and decimal format. - Capability of calculating permutation, combination, Least Common Multiple (LCM), and Greatest Common Divisor (GCD). - Quadratic and system of two linear equations solver - Rectangular to polar and polar to rectangular coordinate conversion (extremely useful for phasor calculations for electrical engineers) - Throws a set of dice (choice of 1 die to 4 dice) - Backspace to delete last digit entered. - Tip Calculator - Geometry Calculator - The left pane scrolls to reveal more functionality without a need to switch modes. The digits and most common operations are always visible and the less common operations can be revealed by scrolling the left half of the screen. - Sinusoidal functions can be calculated for angles in units of degrees, radians, or gradians. - Showing the content of memory on MR button, as long as it fits. Calculator!! is an ongoing project and we are working on more features and functions to be added to every update of the app. You are going to love the simplicity of the user interface and you will get used to the extra functionality added to this product. Please do not hesitate to contact us for any questions, comments, to report any bugs, or to suggest additional functions you would like to see in the upcoming updates.

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/

Screenshots

Calculator!!4 screens
Construction Calculator1 screens

Verdict

The call

The clearest difference is price: Construction Calculator at Free against Calculator!!'s $0.99. Construction Calculator also leads on update cadence (every 6 days vs every 10 months) and rating (4.7 vs 4.4). Calculator!!'s advantage is in-app purchases (none vs 9) and review sentiment (75% vs 54%). On ads 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

Construction Calculator is free to download; Calculator!! costs $0.99 up front. Construction Calculator sells 8 in-app purchases, starting at $4.99 per month. Calculator!! asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Construction Calculator holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Construction Calculator has 625 ratings behind it against 56, so its average is the more settled of the two. Written reviews complicate that: 75% of Calculator!!'s written reviews are positive against 54% of Construction Calculator's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Calculator!! ships an update every 10 months, Construction Calculator every 6 days. The most recent releases landed on September 24, 2026 and September 27, 2026 respectively.

Scorecard8 real differences · 2 level
Calculator!! versus Construction Calculator: the parameters behind the verdict, then further details
ParameterCalculator!!Construction Calculator
Price$0.99Free — better
Rating4.4 (56 ratings)4.7 (625 ratings) — better
Positive reviews75.0% of reviews — better53.7% of reviews
Number of ratings56625 — better
Update frequencyEvery 10 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS10.0 — better16.4
Further details — not scored
Size12 MB49 MB
Age rating4+4+
DeveloperDogahexNeat.com

Customer experience

Calculator!!

All ratings56 ratings
Positive85.7%
Neutral5.4%
Negative8.9%
Written reviews8 reviews
Positive75.0%
Neutral12.5%
Negative12.5%

Construction Calculator

All ratings625 ratings
Positive91.4%
Neutral3.2%
Negative5.4%
Written reviews136 reviews
Positive53.7%
Neutral4.4%
Negative41.9%

Bugs and requests

Calculator!!

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

Calculator!!

No 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

Questions

Is Calculator!! free?
Calculator!! costs $0.99, with no in-app purchases.
Is Construction Calculator free?
Construction Calculator is free to download, with in-app purchases available.
Which has better reviews, Calculator!! or Construction Calculator?
Construction Calculator is rated higher. Calculator!! averages 4.4 out of 5 from 56 ratings, while Construction Calculator averages 4.7 from 625 ratings.
Do Calculator!! or Construction Calculator have ads?
Neither Calculator!! nor Construction Calculator shows ads.
Which is updated more often, Calculator!! or Construction Calculator?
Calculator!! ships an update every 10 months, and Construction Calculator every 6 days. Most recently, Calculator!! was updated on September 24, 2026 and Construction Calculator on September 27, 2026.

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