David and Katie are generously matching donations to one of my favorite causes today: Jean MacDonald's App Camp for Girls. I happily made my donation today.

It is estimated that only 20% of software engineers are female; that percentage is even lower among mobile app developers.

The same is true of technology classes in schools. There are few opportunities for girls to explore high-tech fields that aren't already dominated by boys.

Apps are rapidly becoming an important part the world's economy and culture. If women are left on the sidelines of this phenomenon, everyone suffers.

Learn more about how the money is used, and donate directly here.