This application will allow you to quickly and easily verify your menstruation phase and find out your fertility throughout the whole year! It will calculate your next menstrual cycle days. You will be able to find out your safe sex and high risk days, or good chance for pregnancy. Calendar of menstruation and fertility will become your closest friend, that will always stay with you. It is very easy to use and has a very intuitive user interface. All you need to do is enter your individual duration of menstrual cycle, pick the first day of your last menstruation and it is done!