Want to know when to expect next period? Trying to get pregnant? Then you are in the right place! Get the Lilly Period & Ovulation Calendar Tracker application and never get caught off guard by your period again. App is suitable for both adult women and teenage girls. Lilly Period Tracker Calendar tracks your periods and can even predict your future periods. If you are trying to get pregnant, the app uses Ovulation Calculator to increase your chance of pregnancy. You can use it as Period Tracker for women with Irregular Periods or Ovulation and Fertility Calculator. Track your period, menstrual cycle, fertility days, symptoms, medications, mood, and more related to your cycle wherever you are! Period Calculator, Diary and Tracker for women and teenage girls learns from your inputs and makes better prediction of future periods and fertility windows through time. You can finally get relaxed about tracking your period and predicting your ovulation and fertility window.