Track and predict your menstrual cycle, ovulation, and fertile window
Typically 21-35 days
Typically 2-7 days
28-day cycle, 5-day period
The menstrual cycle typically lasts 21-35 days, with the average being 28 days.
The fertile window is the time when pregnancy is most likely to occur:
Sperm can survive up to 5 days in the reproductive tract.