Credibility is one of our Four Core Values here at Natural Cycles. Read more about our research, the medical advisors who work with us, and our certifications.
Natural Cycles is shown to have an effectiveness rate of 93% with typical use and 98% effective with perfect use. This analysis looked at the data of over 22,000 women. When calculating typical effectiveness in this study, all possible reasons for becoming pregnant while using Natural Cycles were taken into account, this included having unprotected sex on a red day, to the app wrongly giving a green day, or the failure of a barrier method.
As part of our mission to pioneer women’s health with research and passion, we have a dedicated in-house team committed to research. View our published studies on Natural Cycles’ effectiveness via the links below: