Natural Cycles Logo

About Natural Cycles

Natural Cycles is a certified birth control app that uses basal body temperature and an advanced algorithm to identify a woman's fertile window. It helps users prevent pregnancy naturally, without hormones or side effects, by indicating 'Red Days' (when protection is needed) and 'Green Days' (when protection is not needed). The app is designed for women seeking a non-hormonal birth control method, those who want to understand their cycle better, or individuals planning a pregnancy. It provides personalized cycle insights, tracks ovulation, and offers a comprehensive overview of reproductive health. Users measure their basal body temperature daily using a compatible thermometer and input the data into the app. The algorithm then analyzes this data, along with other optional inputs like period tracking and LH test results, to determine fertility status. This method offers a precise way to understand individual cycle patterns, empowering users with knowledge about their bodies and reproductive health.