In fact, there are seven! These apps were displayed at a White House event on Tuesday, and the programs attack the gender pay gap from various angles. One app works on interviewing techniques, another focuses on the origin of inequality, and another is a gender pay calculator of sorts. This follows President Barack Obama's initiative called "Hack the Pay Gap," and it will be intriguing to watch what happens with a new president to be elected in November.

Source: http://blogs.wsj.com/economics/2016/07/19/narrow-the-gender-pay-gap-there-are-apps-for-that/