Trigonometry Master is a simple app that allows you to quickly calculate unknown sides and angles of any triangle. It will also calculate the area and perimeter of the triangle.

The app finds the sides, angles, area and perimeter of a triangle based on input parameters.
- Right triangle:
Enter two values, two sides or a side and an angle, tap Calculate and Trigonometry Master will find remaining values.
- Oblique triangle:
Enter three values, tap Calculate and Trigonometry Master will do the rest.
Valid inputs:
• three sides
• two sides and an angle
• two angles and a side

- Solves right triangles.
- Solves oblique triangles.
- Calculates unknown sides, angles, area and perimeter of a triangle.
- Supported angle units: degrees, radians.
- 2 input modes.
- You can select the desired number of decimal places to adjust the accuracy of the results.
- History tape to view your recent calculations.
- Back and forward buttons to recall recent calculations.
- Sends results and history via email.
- 'Undo' for the Clear command.
- 7 color schemes.
- Portrait and landscape orientation.

What’s New

Version 1.2.0

Added Czech and Polish localizations.

Ratings and Reviews

4.0 out of 5
1 Rating

1 Rating

ObtuseUnicorn ,

Useful triangle calculator.

It’s a triangle calculator.
Calculates triangles with spare design. Can customize the color. A dark mode to go with those color options would be great too.

I wish the picture of the triangle shape would change to visually represent the entered values.


Intemodino Group s.r.o.
25.8 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Czech, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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