Apparently, the “On the Map” app is a Nanodegree-only exercise. That is very disappointing, as I would like to accomplish as much as possible of the Nanodegree prior to signing up for the Nanodegree program (because you are charged monthly for the Nanodegree program until the work is completed). This is a blatant money-grab by Udacity. There is no reason the “On the Map” resources and requirements could not be made available publicly.

Perhaps the Udacity API is not public, but then why expose it to the Nanodegree participants?