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 15,000 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:
Check out the effectiveness for different birth control methods.
*Percentage of typical/perfect users who did not get pregnant with the method over 1 year of use.
Reference: Contraceptive Technology (Table 26 - 1). 21st Edition, 2018 —>
Source: Trussell J . Contraceptive Efficacy. In Hatcher R A, Trussell J, Nelson A L , Cates W, Kowal D, Policar M. Contraceptive Techology: New York NY: Ardent Media, 2018—>
A Senior Consultant in Obstetrics and Gynaecology at Danderyd Hospital and researcher at the Karolinska Institute, Dr Kopp Kallner is secretary of the Board of the Swedish Society of Obstetricians and Gynecologist. She is also a member of the Advisory Board of Natural Cycles. Dr Kopp Kalner works with Natural Cycle in designing and performing new research on fertility monitoring, contraception and mHealth.
In 2018 the US Food and Drug Administration (FDA) cleared Natural Cycles for use as a digital method of birth control.Download
In Europe, Natural Cycles is the first CE-marked Class II medical device (CE0123) for use as a method of birth control.Download