http://money.cnn.com/2017/08/21/news/economy/girls-who-code-saujani/index.html
It has nothing to do with capacity for empathy. I think it has more to do with the fact that Western upper middle class women have typically been expected to devote their efforts and freetime to charity work. It's just a continuation of a cultural expectation of women.
My bias is also very heavily against the concept that apps are going to create a systematic change, as opposed to actual direct action....