WOMEN
08/22/2013 11:45 am ET Updated Oct 22, 2013

The Rise Of The Period Apps: Where Big Data Meets Girlie Graphics

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Period technology has come a long way since the first pad -- complete with straps, suspenders, buckles, and a belt -- made it into stores in the late nineteenth century. Meet the period app: Women are now using their smartphones to help them do everything from graphing their flows to changing their tampons on time to predicting the days on which they'll ovulate.

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