Dot is grounded in science. It uses a deep understanding of reproductive biology and Bayesian regression models to predict your risk or chance of pregnancy.  In order to ensure that Dot can be used as both contraception and for pregnancy planning, it has undergone extensive research. 


Research on Dot's Effectiveness


Dot has recently undergone a groundbreaking study that measured its effectiveness in preventing pregnancy. The study was the first of its kind performed on an app. The findings show that Dot is 95% effective in preventing pregnancy with typcal use and 99% effective with perfect  use.  The study was conducted by the Institute for Reproductive Health at Georgetown University with support from the United States Agency for Internatonal Development (USAID).  Results were published on March 18, 2019, in The European Journal of Contraception and Reproductive Health Care.  

Dot Fertility App Research: Personalised Estimation of a Woman's Most Fertile Days

Personalised Estimation of a Woman's Most Fertile Days


Prior to releasing Dot, the algorithm underwent computational modeling to determine its theoretical efficacy and medical criteria for use.  See the full paper here.