I (finally) finished my RubyMotion iOS application. It is (alas) only available in the Canadian app store, since it is very specific to Canada. You can read about it on my application web site - https://wimby.ca
Fun stuff was - figuring out how to get 250,000+ records of info in Core Data. Figuring out how to display all that on a map with MapKit.
I must say that I really appreciated the motion-provisioning and motion-appstore gems as I reached the point of getting a build ready for TestFlight, and then release.