Calculation of Roofs is a full version calculator developed by DeveloperMaster, designed to assist builders-roofer. It is an Android-based program, compatible with Android 9.0 that provides an extensive range of functions for calculating different types of roofs. With this program, users can calculate the area, angle, length of rafters, rows of rafters, rafter step, number of rafters, battens, rows of the crate, number of battens, and roofing material with graphic information.

The program has functions that cater to four types of roofs, namely slope, gable, mansard, and hip. It also provides users with the option of saving the result to a pdf file, which is convenient for storage and viewing. The program offers installation instructions and graphic representation of the future roof. Additionally, users can request any calculation functions and information that they need to be added to the program.