Calculator 2tax vs Triangle3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator 2tax
This calculator handles two consumption taxes and displays input formulas. It stores calculations and their formulas in history, operating like a standard calculator. It's designed for ease of use and clear calculation processes.
- Supports two consumption taxes
- Displays input formulas
- Stores calculations with formulas in history
- Operates like a general calculator
- Simple and easy-to-use interface
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A simple and easy-to-use calculator. It supports two of the consumption tax. You can see the formula for the input process. The calculation results can be stored in the history together with the calculation formula. This calculator calculates in input order like a general calculator. *This app. General Calculator (calculation in input order) 2 + 3 × 5 = 25 [2 + 3 × 5 = 25] *Function Calculator 2 + 3 × 5 = 17 [2 + (3 × 5) = 17]
Triangle3
This app provides advanced calculation tools for field work, specializing in right and unequal triangles. It supports complex shapes like cones, pipes, and screw wings, with AR visualization for floor plans. It also includes standard calculator functions and memory features.
- Right and unequal triangle calculations
- Complex shape development (cones, pipes, etc.)
- Augmented Reality (AR) floor plan visualization
- Standard calculator functions with memory
- Trigonometric and cosine theorem calculations
- PCD and screw wing calculations
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This is a calculator application created by me, a canner, focusing on the functions of a calculator necessary for field work. Even if you don't understand trigonometric functions, you can easily calculate with this calculator. It can calculate right triangles and unequal triangles. It can calculate memory, answer memory, pi, repetition, parentheses, trigonometric functions, and cosine theorem. Develop cones (including misalignment), diagonal cuts, R-cuts, T-pipes, shrimp tubes, rounded corners, rounded corners (eccentricity), hopper eccentricity, pipes from mirror plates, connecting pipes to tapered pipes, screw wings, and calculate PCD. It is possible to display the development on the floor in full size with AR for a specific development. User's Manual ############################ Calculator section Press and hold the "ANS" button to display past calculation results. Tap the label of the calculation result (right after pressing =) to mark the value in the ANS list. Tap the white button to enter the value displayed on the label. Swipe the screen to the left or right to rotate the right triangle. Swipe the screen up and down to flip the right triangle. Enter two right triangles and three unequal triangles. Tap the "Cal" button to display the calculation result. Tap "Cl" button to clear the displayed value. You can also use the "0" label to erase only the specified locations. If you touch the button and slide it down, the numerical value of the calculation result will be displayed on the label, and can be used for the next calculation. Trigonometric calculations can be done with By sliding the [4] and [6] buttons, you can go back and forward. Pressing the CLR button once will erase the number. Press twice to reset the rotation. Press and hold to erase numbers, reset rotation, and erase memory. Press and hold to erase numbers, reset rotation, and clear memory. Automatic input of pipe outline Example 50A -> Input "5", "0", "1 slide". 1¼B -> Input "1", "4", "1" and "2 slides". Each slide twice in succession will reduce the value by half. Expansion section The input method is the same as in the calculator section. To expand a pipe, PCD, or mirror, slide the screen to the left or right to select the expansion diagram. Basically, all buttons need to be entered, but in some places "0" can be used. For round corners (eccentricity), double-tap the screen after entering the numerical value for round corners to switch to the input screen. Please enter the division of the circumference in multiples of 4. The calculation result is an image, so it may differ from the actual shape. Disclaimer Although every effort has been made to ensure the accuracy of the calculation results in this application, the accuracy is not guaranteed. Please note that we are not responsible for any damage, loss, or disadvantage caused by the use of this application.
Screenshots
Verdict
The clearest difference is price: Calculator 2tax at Free against Triangle3's $3.99. Calculator 2tax also leads on review sentiment (62% vs 40%). Triangle3's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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
Calculator 2tax is free to download; Triangle3 costs $3.99 up front. Calculator 2tax sells 1 one-off in-app purchase. Triangle3 asks for nothing beyond the download.
Calculator 2tax ships an update every 10 months, Triangle3 every 5 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.
| Parameter | Calculator 2tax | Triangle3 |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 61.5% of reviews — better | 40.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 months | Every 5 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | sky-nexus Inc. | ryo sasaki |
Customer experience
Calculator 2tax
Triangle3
In-app purchases
Calculator 2tax
- Disable Ads$1.99
Triangle3
No in-app purchases









