How accurate is the Natural Cycles app when used in conjunction with the Oura Ring?

The accuracy of the Natural Cycles app when used in conjunction with the Oura Ring is reported to be enhanced due to the improved precision in measuring physiological markers related to fertility. The app, which is a certified contraceptive method, bases its algorithms on basal body temperature and menstrual cycle data to predict fertile windows. The Oura Ring, a wearable device, tracks various health metrics, including temperature, which can provide highly accurate and consistent temperature readings that feed into Natural Cycle's algorithms. Together, these technologies improve the user's ability to pinpoint ovulation times and fertile days with greater precision. However, as with all fertility tracking methods, one must acknowledge that individual variations and the possibility of user error can affect overall effectiveness. The combined use of these tools is considered an advanced approach in natural family planning and personal health monitoring, offering users a more nuanced understanding of their bodies.