Research Study & Dot Resources 

Dot Period and Fertility Tracker App Study is being conducted by outside researchers with support from the U.S. Agency for International Development (USAID)

Research on Dot's Effectiveness


Dot has undergone the first efficacy study on a fertility app that adheres to established contraceptive efficacy-design protocol. The study was completed in October 2018 and results were published on March 18, 2019, in The European Journal of Contraception & Reproductive Health Care.  The study determined a 1% failure rate with correct use and 5% failure rate with typical use.

The study was conducted by researchers at the Institute for Reproductive Health at Georgetown University with support from the United States Agency for International Development (USAID).

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. 

Below you'll find relevant research and resources to help you offer the Dot method to your clients.

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.

Assessing the Efficacy of an App-Based Method of Family Planning: The Dot Study Protocol

Assessing the Efficacy of an App-Based Method of Family Planning: The Dot Study Protocol


The aim of this efficacy study is to assess the Dot app as a new method of app-based contraception. The objectives include (1) obtaining perfect and typical use pregnancy rates for users of Dot; (2) understanding how user interaction with the method is influenced by aspects such as demographics, social support, relationship support, and fertility awareness; and (3) assessing user preferences and best practices for conducting mobile contraceptive research. See the full paper here.

Lessons From the Dot Contraceptive Efficacy Study

Lessons From the Dot Contraceptive Efficacy Study: Analysis of the Use of Agile Development to Improve Recruitment and Enrollment for mHealth Research


Researchers from Georgetown University’s Institute for Reproductive Health (IRH) published a new paper detailing the process of recruiting participants for year-long prospective study to measure the efficacy of Dot Fertility Tracker app for avoiding unintended pregnancy. See the full paper here.

Dot Study Fact Sheet (PDF)


Why study fertility apps? While there are thousands of fertility trackers on the market, very few are designed to prevent pregnancy. The following Dot Study Fact Sheet provides an overview of the Dot efficacy study design & process, how women signed up to participate, and key insights from the researchers. Download the Dot Study Fact Here.

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Dot Brochure (PDF)


We've made it easy to share information about Dot in this 2-pg. brochure. Download the Dot Period Fertility App brochure here.

Dot Fertility App Manual_Instructions fo

Dot Manual / Instructions for Use (PDF)


We've made it easy to share information about Dot's Instructions for Use in this pdf download. Download the Dot User Manual here.