Natural Family Planning or Natural Family Planning is a method of planning a pregnancy, planning the sex of a child, predicting the day of delivery, delaying a pregnancy without contraception that endangers health, knowing fertile days and dry days for a woman.

With a natural healthy way without using contraceptives that endanger women's health.

Equipped with detailed and complete explanations based on official references and sources of personal experience of Natural FP practices.

Along with the application to record observations of menstrual or menstrual cycles, predictions of subsequent menstruation, predictions of fertile days and dry days.

It is suitable for girls and young mothers who want to live naturally healthy in the life of husband and wife. It can also be used as a practical tool for participants in the marriage preparation course and the guidance of the marriage preparation courses.