The Charter is a programme supporting the observation of a woman's fertility cycle for a multi-symptomatic method. It was created on the basis of materials of the "Home Natural Family Planning Course" disseminated by the League to the Marriage. The application enables the presentation of the collected information in a clear form in various ways.

The card consists of such components as statistics, approximate date of birth of a child or monthly cycle calendar. Additional application allows you to print Cards in the "traditional" form. (graph of temp.

course) or in a tabular form, contains a simple PIM, which allows you to define different tasks or appointments.