A free app for Android, by Gian Casalegno.
Sol et Umbra is a tool for designers and engineers, with an interactive interface and a large number of parameters.
The interactive interface allows you to choose the parameters you need from a large number of possibilities, and the program will show you the results of your choice in a graphic way.
The interface is divided into several sections, and you can access it from the main menu, by means of an icon on the notification bar or by using a button on the main panel.
The first section is the settings section, and here you can choose the parameters you need from a list.
