Trigocal is a free and easy-to-use trigonometry calculator that can help you solve math problems related to right and scalene triangles. Developed by Paulius Gilvydis, this Android app comes with additional features including a converter and a list of trigonometry formulas.

One of the standout features of Trigocal is its ability to calculate using different units, including mm, cm, dm, m, km, in, ft for sides, and degrees, radians, slope percentage for angles. In addition, the app allows you to easily switch between right and scalene triangles by clicking the smaller triangle on the right side.

Trigocal also provides calculation steps, and you can see which formulas were used to calculate the result. The converter lets you convert the units of sides and angles, and you can set default units that will always show when you open the app. Trigocal supports English, Russian, and Lithuanian languages.

Overall, Trigocal is a useful app for students and anyone who needs help solving trigonometry problems. However, it is important to note that the app does not provide any personal or contact information for the developer.