<p>Paul Blumenthal of Stanford University in the U.S. is creating a cell phone application that collects information on an individual's menstrual cycle, processes the information with a calendar algorithm, and sends free text messages as a reminder to a woman of her menstrual status.</p>


Paul Blumenthal of Stanford University in the U.S. is creating a cell phone application that collects information on an individual's menstrual cycle, processes the information with a calendar algorithm, and sends free text messages as a reminder to a woman of her menstrual status.