This is where things enter into the odd world of academia. In all honesty, I think our application for the particular grant that was available was an "outlier". The grant came with caveats. Projects were to target technology that would likely be used by faculty and students and the resulting work (publications or, in our case, software) would be released under open licenses. As far as I could tell, ours was the only project that was producing actual software. We were able to pay the Apple Dev fee for one year from our funds but our application wasn't ready for distribution within that time so we never submitted it to the app store and have released the source code instead. We were never big fans of distributing it through the app store anyway.