First Ever Real-Time Efficacy Study on Fertility App Launched

Posted in News Release

WASHINGTON (February 7, 2017) — In what is believed to be the first study of its kind, researchers at Georgetown University Medical Center’s Institute for Reproductive Health (IRH) announced today the launch of a year-long study to measure the efficacy of a new app, Dot™, for avoiding unintended pregnancy as compared to efficacy rates of other family planning methods. The Dot app, available on iPhone and Android devices, is owned by Cycle Technologies. Up to 1,200 Dot Android users will have the opportunity to participate in the study.

The study, funded by a grant from U.S. Agency for International Development (USAID), will be the first known study to examine how women use a fertility app in real-time and to evaluate its effectiveness at avoiding unintended pregnancy. In a previous study, a research team found that Dot is theoretically 96 to 98 percent effective at avoiding unintended pregnancy if used correctly. As a woman continues to use it, the app increases its individual accuracy.

While there are thousands of menstrual cycle tracking apps on the market, recent research has demonstrated that the majority are not accurate enough to avoid unintended pregnancy or plan a pregnancy. One study evaluated 100 fertility awareness apps. Only six could correctly identify the fertile window. This finding highlights the importance for app-based family planning tools to rely on scientifically-backed methods and to be evaluated thoroughly for their accuracy.

“Our new study is unique because we’re testing the efficacy of Dot as a method to avoid unplanned pregnancy in a real-time situation,” says Rebecca Simmons, PhD, a senior research officer at IRH. 

The study will evaluate Dot’s efficacy in avoiding unplanned pregnancies using a protocol that allows researchers to compare the results to known efficacy rates of other family planning options. It will also explore social factors, such as how Dot affects relationships. The researchers will recruit participants through Dot for Android, issue surveys in the app, and interview participants four times during the study. Participants will receive a gift card each time they enter period start date information and each time they complete a survey.

The IRH study could have global significance because multiple studies suggest that the main reason women stop using the birth control pill is side effects. If Dot can help women avoid pregnancy without the pill’s high abandonment rate, it’s a compelling alternative, says Simmons. The app would be especially useful in the developing world, where there is significant unmet family planning need. Global health experts estimate that 225 million women worldwide are not using effective family planning methods but want to avoid pregnancy.

“Dot users have a historical opportunity to advance the science of birth control and family planning,” said Leslie Heyer, president and founder of Cycle Technologies. “No fertility app has undergone such rigorous testing. Users who join our effort can help make free, effective fertility tools accessible to women throughout the world.”

Cycle Technologies developed the science and algorithm behind Dot™ in collaboration with global health experts from Georgetown University, Duke University and The Ohio State University. Dot is the only family planning app that relies solely on period start dates to determine a user’s individual fertile days.

“A method that only requires a user to enter her period start date is likely to appeal to many women,” said IRH’s Director, Victoria Jennings, PhD. “Our work has shown that simple fertility awareness messages are extremely attractive to a wide range of women and can address their family planning needs.”

About the Institute for Reproductive Health
The Institute for Reproductive Health at Georgetown University Medical Center has more than 25 years of experience in designing and implementing evidence-based programs that address critical needs in sexual and reproductive health. The Institute’s areas of research and program implementation include family planning, adolescents, gender equality, fertility awareness, and mobilizing technology for reproductive health. The Institute is highly respected for its focus on the introduction and scale-up of sustainable approaches to family planning and fertility awareness around the world. For more information, visit

About Georgetown University Medical Center
Georgetown University Medical Center (GUMC) is an internationally recognized academic medical center with a three-part mission of research, teaching and patient care (through MedStar Health). GUMC’s mission is carried out with a strong emphasis on public service and a dedication to the Catholic, Jesuit principle of cura personalis — or “care of the whole person.” The Medical Center includes the School of Medicine and the School of Nursing & Health Studies, both nationally ranked; Georgetown Lombardi Comprehensive Cancer Center, designated as a comprehensive cancer center by the National Cancer Institute; and the Biomedical Graduate Research Organization, which accounts for the majority of externally funded research at GUMC including a Clinical and Translational Science Award from the National Institutes of Health. Connect with GUMC on Facebook (, Twitter (@gumedcenter) and Instagram (@gumedcenter).