Comparison

ShapeInfo Plus vs Triangle3

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

Head to head
About

ShapeInfo Plus

This app calculates lengths, angles, and areas for various geometric shapes. It supports a wide range of 2D and 3D shapes, making it a handy tool for engineers and students.

Highlights
  • Calculate lengths, angles, and area
  • Calculate volume for 3D shapes
  • Supports various 2D and 3D shapes
  • User-friendly input for calculations
  • Immediate calculation results
Features
Read full description

Feature The ShapeInfo is useful application for calculating shape lengths, angles and area. You can get some calculated lengths and angles of the shape from choosing and entering values in the boxes upon the orange points. How to use 1. Choosing shape from the list. 2. Enter the value to the box upon the orange points. You can change the formation of the orange points by "NEXT" button (orange color) or tapping orange/gray point near the box that you are going to enter the value. 3. You can get calculated values of the shape, immediately after entering values. Applications - For the software developer, the mechanical engineer, the dynamics engineer and the surveying engineer. - Study mathematics for high school students. Functions - Calculate lengths, angles and the area for the right triangle, the triangle, the sector, the circle and ellipse. - Calculate volume for the triangular pyramid, the triangular prism, the circular cone, circular cylinder and the sphere. Shapes - Right triangle - Triangle - Sector - Circle - Ellipse - Triangular pyramid - Triangular prism - Circular cone - Circular cylinder - Oblique cutting circular cylinder - Sphere Disclaimer Appsys does not accept responsibility for any loss, which may arise from reliance on the software or materials published on this site.

About

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.

Highlights
  • 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
Features
Read full description

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

ShapeInfo Plus4 screens
Triangle34 screens

Verdict

The call

The clearest difference is review sentiment: ShapeInfo Plus at 68% against Triangle3's 40%. ShapeInfo Plus also leads on price ($0.99 vs $3.99) and iOS requirement (13.0 vs 15.0). Triangle3's advantage is update cadence (every 5 weeks vs every 6 months). On ads, in-app purchases, monetization model 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

ShapeInfo Plus costs $0.99 and Triangle3 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ShapeInfo Plus ships an update every 6 months, Triangle3 every 5 weeks. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

Scorecard4 real differences · 6 level
ShapeInfo Plus versus Triangle3: the parameters behind the verdict, then further details
ParameterShapeInfo PlusTriangle3
Price$0.99 — better$3.99
Rating4.6 (31 ratings) — better—
Positive reviews67.9% of reviews — better40.0% of reviews
Number of ratings31 — better—
Update frequencyEvery 6 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size11 MB7 MB
Age rating4+4+
DeveloperNoriyasu Kutsuzawaryo sasaki

Customer experience

ShapeInfo Plus

All ratings31 ratings
Positive90.3%
Neutral3.2%
Negative6.5%
Written reviews28 reviews
Positive67.9%
Neutral14.3%
Negative17.9%

Triangle3

Written reviews10 reviews
Positive40.0%
Neutral30.0%
Negative30.0%

In-app purchases

None

ShapeInfo Plus

No in-app purchases

None

Triangle3

No in-app purchases

Questions

Is ShapeInfo Plus free?
ShapeInfo Plus costs $0.99, with no in-app purchases.
Is Triangle3 free?
Triangle3 costs $3.99, with no in-app purchases.
Do ShapeInfo Plus or Triangle3 have ads?
Neither ShapeInfo Plus nor Triangle3 shows ads.
Which is updated more often, ShapeInfo Plus or Triangle3?
ShapeInfo Plus ships an update every 6 months, and Triangle3 every 5 weeks. Most recently, ShapeInfo Plus was updated on September 23, 2026 and Triangle3 on September 13, 2026.

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