I started a non-profit a few years ago that brings processes and technology from the for-profit sector into the non-profit sector -- moving old NPOs from listserv to MailChimp, for example. Getting them to use HootSuite instead of manually posting is another.

It's incredibly time-consuming and difficult just to get non-profits to redesign a terrible website. There are tons of stakeholders, no budget, and (most importantly) very little bandwidth among decisionmakers.

The unit economics just don't work out. It would take so long to sell a single app that you wouldn't profit at all.

If you're doing this just to do something good and not to make money, then great!!