The Dot Fertility Tracker uses data science and an advanced, proprietary algorithm to determine accurate risk or chance of pregnancy. Dot takes your unique cycle pattern along with known fertility data to calculate your risk of conception for each day of your menstrual cycle. A full-scale effectiveness study conducted on Dot has shown that it is highly effective at preventing unintended pregnancy. In addition, it has an ovulation estimator, so you can can see the forecast of when you're most likely to ovulate. Almost all people with menstrual cycles in a range of 20 to 40 days can use Dot.
Although Dot is simple to use, the technology that powers Dot is complex. The method was developed by Cycle Technologies in collaboration with scientists and statisticians from leading universities, Dot uses Bayesian regression models to predict your risk or chance of pregnancy. Dot uses your individual data as well as large data sets from the World Health Organization and other sources to calculate your unique risk of pregnancy on a daily basis, and all you need to do is enter your period-start dates.
For years, Cycle Technologies has provided simple, effective, fertility-awareness solutions that are used by millions around the world. The approach is grounded in science and made possible through advances in technology and great design.
A full-scale effectiveness trial has shown that Dot is highly effective when used for preventing pregnancy. Dot is 99% effective with perfect use and 95% effective with typcial use. Results were published in The European Journal of Contraception and Reproductive Health Care on March 18. 2019. The study was conducted by the Institute for Reproductive Health at Georgetown University with support from the United States Agency for International Development (USAID).
Prior to releasing Dot, the algorithm underwent computational modeling to determine its theoretical efficacy and medical criteria for use. See the full paper here: Personalized Estimation of a Woman’s Most Fertile Days