🤸Period Calendar - Menstrual Tracker Period Calendar is an extremely elegant and easy-to-use application that helps women keep track of periods, cycle, ovulation, and fertile days. Whether you are concerned about conceiving, birth control, contraception, or regularity of period cycles, Period Calendar can help. Our tracker is easy to use and offers everything you need: Track irregular periods, weight, temperature, moods, blood flow, symptoms and more. Discreet reminders keep you informed