Period Tracker - Period Tracker, the easiest way to track your periods!
Ovulation calendar online - Calculate your periods and find out when you are most likely to get pregnant!
Cycle - (taken from the man pages) DESCRIPTION
IOvulation Calculator - Ovulation calculator predicts your ovulation date, fertility window, next period, intercourse window, safe period, and due date based upon your menstrual cycle.
Eve by Glow - A savvy sex & health app for women
Periodical - This application calculates the fertile days according to Knaus-Ogino.