Join the tens of thousands of women charting their fertility with OvaGraph, the official fertility charting app of Toni Weschler’s bestselling book: Taking Charge of Your Fertility (TCOYF).

Easy to use and completely free, the OvaGraph fertility calendar app allows you to store and graph all of your menstrual cycle data – basal body temperature (BBT), cervical fluid, OvaCue Fertility Monitor readings, and much more – in one convenient location. OvaGraph employs the Fertility Awareness Method (FAM) to automatically interpret your fertility signs and help you identify your peak fertile days – the time you’re most likely to achieve pregnancy. OvaGraph is a full-featured, fertility chart and ovulation tracker that has helped countless couples conceive.