# Geometric Calculator X

> Geometric calculator for area and volume of various shapes. (iPhone/iPad app by Yoshiaki Onishi.)

- Source: https://appshunter.io/ios/app/geometric-calculator-x/id1073406018 (this page in markdown: same URL + `.md`)
- Developer: [Yoshiaki Onishi](https://appshunter.io/developer/852893746)
- Category: Education, Productivity
- Price: $1.99
- Rating: 2.00/5 from 1 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 31 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China)
- Released: 2016-01-15
- Data updated: 2026-08-23
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/geometric-calculator-x/id1073406018/reviews.md

## What is Geometric Calculator X?

The Geometric Calculator is an app that makes calculations for a variety of geometric shapes.
It does not provide the functionality of a standard calculator.
This is a useful calculator for when you do not know the formula for working out the area of a particular shape, when you want to calculate the value of the hypotenuse and you do not know about trigonometric functions, or if it is too troublesome to enter values into a formula to work out the result.

The app allows you to enter the length of the sides and height of a shape to obtain its area and volume. For example, for a triangle, you can enter the length of the sides and the height to obtain its area and perimeter; for a parallelepiped, you can enter the length of the two sides and height to obtain its volume and surface area; and for a sphere, you can use the radius to work out its volume and surface area.
The list of geometric shapes supported by this app is displayed further below. The app also provides the formulas for some of the shapes.

The units for angle measurements used within the app are degrees, radians, and degrees/minutes/seconds.


How to Use the App
Select the geometric shape that you want to make calculations for, enter its values, and the app will then display the various calculation results.
For example, if you want to calculate the area of a rhombus, you select "tetragon/polygon."
Within this group, select the rhombus; you will then see the values input screen.
As this is a rhombus, you enter the values of the two types of diagonal lines and press the Calculate button.
The output area at the bottom of the screen displays the rhombus's area, perimeter, as well as the values of each of the angles.

As described above, this app allows you to select a geometric shape and enter its values in order to display geometric calculations about it such as the area, etc.
The top of the calculation screen displays diagrams of the type of shapes that the calculation is used for.


Tap the red pen on the bottom right of the input panel to edit the current values.


Important Notes:
- The creators of this app bear no responsibility for any damages or claims made by third parties as a result of using this app.
- The measurement units are not displayed as these will vary depending on the values of the shape being calculated. Please convert the units as required depending on the shape.
- The app makes calculations as long as they fit within the appropriate formula, even if the values given do not correspond to a feasible shape.
- Angle calculations may include a margin of error due to conversion errors of degrees, radians, and degrees/minutes/seconds.
- The valid number of digits is 15.
- The app has been tested, but if you were to encounter any issues, please kindly send us an issue report.
- If the app is received favorably by our users, we intend to add new functionality with the highest demand in the future.


The geometric shapes supported by this app are as follows:
(The units used for angle measurements are degrees, radians, and degrees/minutes/seconds.)

"Triangle"
- Equilateral triangle, 
- Isosceles right triangle
- Right triangle
- Isosceles triangle
- Scalene Triangles

"Quadrilateral and Polygon"
- Square
- Rectangle
- Rhombus
- Parallelogram
- Trapezoid
- Regular polygon
- Area of the rectangle to be inscribed in a circle (4 sides)

"Circle and Ellipse group"
- Circle
- Circular sector
- Arches
- Ellipse
- Parabolic arches

"Prism and circular cylinder"
- Cube
- Rectangular
- Square prism
- Circular cylinder
- Hollow cylinder

"Pyramid and circular cone"
- Tetrahedron
- Regular tetrahedron
- Square pyramid
- Pyramid
- Quadrangular frustum
- Frustum
- Wedge shapes
- Positive quadrangular frustum
- Circular cone
- Circular truncated cone

"Ball"
- Ball
- Solid torus (donut-shapes)
- Spheres with missing sections

## Key features

- Calculate area and volume
- Supports various geometric shapes
- Input side lengths and heights
- Provides formulas for some shapes
- Multiple angle units (degrees, radians)
- Diagrams of shapes shown

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/geometric-calculator-x/id1073406018/reviews.md

### 5/5 — 更新

*2020-03-11*

作者是不是已经放弃这个软件了？上下都是大黑边，不适配手机屏幕。赶紧更新。

### 1/5 — 没建工计算器好用

*2019-05-11*

无法求切口圆的弧长和面积

### 2/5 — Had one job, failed

*2016-12-28*

Of all the things it will calculate for a pyramid, the angle of the edges is not one of them. This is very disappointing as that specific calculation is the sole reason I searched out a geometric calculator app

**Developer response:** I responded to Apple's review reply so I will ask you a question.
What kind of calculations are you asking for? Could you tell me more specifically?
Please press the send mail button on the bottom right from the figure screen of the application.
Please describe desired content in e-mail specifically and send it.
I would like to respond if possible. However, please understand that it may not be possible.
(Internet translation used)

### 5/5 — 最好用的计算器

*2016-04-01*

图形计算器很完美，能算很多图形，能节约很多时间，日本人制作的程序，12RMB没白花，给他们点个赞，国内怎么弄不出这么好的计算器呢

### 3/5 — 角度表記…

*2016-03-04*

角度の表記が三種類から選択可能になり
使いやすくなりました。
 個人的には「度分秒」形式が使えるようになり
助かっています。

## Frequently asked questions about Geometric Calculator X

### What is Geometric Calculator X used for?

Geometric Calculator X is used to calculate the area and volume of various geometric shapes. It helps users by providing the necessary formulas and performing calculations when specific values like side lengths and heights are entered.

### Does Geometric Calculator X have ads?

No, Geometric Calculator X does not contain advertisements. It is a paid application that offers an ad-free experience for its users.

### What geometric shapes can Geometric Calculator X calculate?

Geometric Calculator X supports calculations for a wide range of geometric shapes, including triangles, parallelepipeds, and spheres. The app displays a list of all supported shapes and provides diagrams for reference.

### What is the price of Geometric Calculator X?

Geometric Calculator X is available for a one-time purchase of $1.99. This price grants users full access to all its calculation features without any additional in-app purchases or subscriptions.

### What units does Geometric Calculator X use for angles?

Geometric Calculator X supports angle measurements in degrees, radians, and degrees/minutes/seconds. This flexibility allows users to work with angles in their preferred unit of measurement.

### On which devices can I use Geometric Calculator X?

Geometric Calculator X is compatible with iPhone, iPad, and iPod devices. It is designed to run on Apple's iOS operating system.

### How often is Geometric Calculator X updated?

Geometric Calculator X was last updated on March 16, 2022. The developer has indicated intentions to add new functionality based on user demand if the app is well-received.

### What is the age rating for Geometric Calculator X?

Geometric Calculator X has an age rating of 4+. This indicates that the app is suitable for children aged 4 and above, with no mature content.

## Version history (last 5 releases)

### 1.6.0 — 2022-03-16

Maintenance

### 1.5.5 — 2019-01-14

Fixed a minor problem.

### 1.5.4 — 2018-07-27

Bug fix
- When calculating with triangle "Heron's formula", we corrected that the angle was wrong.

### 1.5.1 — 2017-11-08

Compatible with iPhoneX

### 1.5.0 — 2017-03-07

Function addition
- Area of rectangle(from 4 sides and Included angle)

## Apps similar to Geometric Calculator X

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Heron's Formula Calculator](https://appshunter.io/ios/app/herons-formula-calculator/id1634727150) | 1.0 (1) | $2.99 | Education |
| [CelestialGuide](https://appshunter.io/ios/app/celestialguide/id649358382) | 1.0 (1) | $0.99 | Education |
| [Frustum of a Pyramid](https://appshunter.io/ios/app/frustum-of-a-pyramid/id6461117353) | — | Free | Education |
| [Perimeter calculator](https://appshunter.io/ios/app/perimeter-calculator/id1665888123) | — | Free | Education |
| [Dev Calc Pro (Hex Dec Oct Bin)](https://appshunter.io/ios/app/dev-calc-pro-hex-dec-oct-bin/id638232609) | 3.5 (2) | $2.99 | Education |
| [Area and Volume Calculator](https://appshunter.io/ios/app/area-and-volume-calculator/id1594339746) | 4.5 (2) | $0.99 | Education |

## More apps by Yoshiaki Onishi

- [KaleidoscopeClock](https://appshunter.io/ios/app/kaleidoscopeclock/id893468766)
- [CheckListManager F](https://appshunter.io/ios/app/checklistmanager-f/id939553901)
- [R-Timer](https://appshunter.io/ios/app/r-timer/id955756843)
- [ExplosiveToDoF](https://appshunter.io/ios/app/explosivetodof/id983113998)
- [Tap de Dokan](https://appshunter.io/ios/app/tap-de-dokan/id994879478)
- [P-Timer](https://appshunter.io/ios/app/p-timer/id1041803365)

All apps by Yoshiaki Onishi: https://appshunter.io/developer/852893746

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*