Calculator!! vs Square Footage Calculator +
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculation history
- Fraction manipulation
- Angle conversions (degrees, minutes, seconds)
- Permutation, combination, LCM, GCD
- Quadratic and linear equation solver
- Coordinate conversion
- Dice roller
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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.
Square Footage Calculator +
Calculate the area of various geometric shapes in square feet, meters, or yards for home improvement projects. It also estimates the cost of materials based on your input.
- Area calculation for geometric shapes
- Supports square feet, meters, and yards
- Material cost estimation
- Calculates for squares, triangles, rectangles, circles, trapezoids, and ellipses
- Project planning tool
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Calculate area in square feet (ft²), square meters (m²), or square yards (yd²) for flooring, landscaping, carpeting, tiling, and construction projects. The app also helps estimate material costs based on area and unit pricing. Example: $23.00 per 100 square feet (ft²). Results are estimates for informational purposes only. We are happy to serve! If you have any requests or suggestions, do not hesitate to contact us. Email: phannhatd@gmail.com
Screenshots
Verdict
Calculator!! and Square Footage Calculator + both sit at 4.5 stars, but that hides the real split: 75% of Calculator!!'s written reviews are positive against 0% of Square Footage Calculator +'s. Calculator!! also leads on in-app purchases (none vs 1) and iOS requirement (10.0 vs 13.0). Square Footage Calculator +'s advantage is price (Free vs $0.99) and update cadence (every 3 months vs every 10 months). On rating, 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
Square Footage Calculator + is free to download; Calculator!! costs $0.99 up front. Square Footage Calculator + sells 1 one-off in-app purchase. Calculator!! asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.5 for Calculator!! against 4.5 for Square Footage Calculator +. That said, the two scores are not equally well evidenced: Square Footage Calculator + has 294 ratings behind it against 56, so its average is the more settled of the two. Written reviews are what separate them: 75% of Calculator!!'s written reviews are positive against 0% of Square Footage Calculator +'s.
Calculator!! ships an update every 10 months, Square Footage Calculator + every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Calculator!! | Square Footage Calculator + |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.5 (56 ratings) — better | 4.5 (294 ratings) |
| Positive reviews | 75.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 56 | 294 — better |
| Update frequency | Every 10 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 12 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Dogahe | Phan Nhat Đang |
Customer experience
Calculator!!
Square Footage Calculator +
In-app purchases
Calculator!!
No in-app purchases
Square Footage Calculator +
- Remove ads$3.99
Questions
Is Calculator!! free?
Is Square Footage Calculator + free?
Which has better reviews, Calculator!! or Square Footage Calculator +?
Do Calculator!! or Square Footage Calculator + have ads?
Which is updated more often, Calculator!! or Square Footage Calculator +?
Other comparisons
