“Fasten Tools” is a set of tools to solve various math problems. The app features algebra and geometry solver, a full-fledged unit converter as well as multiple text tools.

The main idea behind “Fasten Tools” is pretty simple — helping students to solve basic math problems in algebra and geometry, as well as some higher mathematics ones, e.g. matrices (determinant, rank, triangular and transposed matrix) and matrix operations (addition, subtraction and multiplication).
In geometry section, you can quickly calculate various parameters of figures, for example, the radius of inscribed and circumscribed circles, area, perimeter, various angles, etc.