wow, thanks for the post! I'm the creator and would love to answer any questions. It will be on app stores soon, and I may expand it to other cities if it takes off, since it's based on GTFS data feeds that are available in many cities
Good luck! What did you think of Ionic? (I've never used it myself, but am curious.)
Thanks! Ionic is really awesome!! I would highly suggest trying it out, especially if you have familiarity with Angular -- you can make apps very quickly. The community is very helpful/responsive, and the team seems to be focused on continually improving it.