A smartphone app that alerts a woman if she is on a high or low risk day for the purpose of planning or avoiding pregnancy may be 96-98% effective if used correctly, a first-of-its-kind study has found.
The app, called Dot (Dynamic Optimal Timing) was created based on data from several published studies. Dot has been available for about a year and is increasingly being used globally.
Dot is one of the few fertility tracking apps – there are estimated to be about 100 such apps – that is based on empirical evidence, said Victoria Jennings, director of Georgetown University Medical Center’s Institute for Reproductive Health (IRH).
Researchers are recruiting as many as 1,200 women to study, in real time, the app which calculates a woman’s chance for pregnancy on a daily basis.
The data upon which Dot is based includes a detailed fertility analysis of about 1,000 women in six geographical and cultural diverse settings.
The World Health Organisation provided most of the data, with additional data from clinical research in the US.
The researchers said their analysis determined that Dot, from the beginning, would be 96-98% effective in women if used correctly. And as a woman continues to use it, the app increases its individual accuracy.
Recognising that each woman’s menstrual cycle can vary, the app allows for menstrual cycles that last as little as 20 days or as long as 40 days.
It relies solely on a woman’s period start date to provide her with tailored, accurate information about her chance of pregnancy for each day of her cycle – and it alerts a woman if she is on a high or low risk day for the purpose of planning or avoiding pregnancy.
“The more you use Dot — the more Dot gets to know you,” Dot’s creator, Cycle Technologies, wrote on their website.
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