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
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.