AZyDH2 is a free Android application designed to support topographers and engineers. It includes a basic calculator with trigonometric functions and transformation between different angle units. The app provides a practical tool to calculate the plane coordinates of a point from another known using the distance and azimuth between them. It also has tools to calculate the distance and azimuth between two points from their north and east coordinates, and for calculating the trigonometric elevation of a point from another known.

One of the best things about AZyDH2 is that it allows users to share the data calculated through various tools available on their mobile devices. Additionally, it has the option to use angles grads and sexagesimal. Overall, AZyDH2 is a comprehensive and practical tool for professionals in the field of topography and engineering.