Ladytimer Ovulation Calendar - Ladytimer Ovulation Calendar predicts and tracks your menstrual cycle. The menstrual calendar calculates period, fertile and ovulation days. You can enter notes, track sex and participate in the Ladytimer discussion boards. The period calendar info can be saved online and imported to any new phones when needed. Never lose your data when you lose or switch phones. Configure a password to keep your data private. Turn on the alarm option and Ladytimer will send you a nofication before each period and ovulation.