Not evident is whether their trip planner is informed by real-time arrival data or is strictly based upon schedule data. For those agencies that offer real-time data to Google (KCM isn't one, yet), the Google trip planner will use that to help formulate the plan. That's useful.
offers trip-planning for the Puget Sound region, and they have an iOS and an Android app, and a mobile-ready web site for those with Windows Phone or Blackberries (or who haven't installed the app).
I don't think we want KCM building apps. I think we want KCM making their data, including real-time arrival prediction data, available to developers, who are going to be much more agile and innovative. That's the model that's worked in every other market. Apps developed by agencies tend to either suck, fail, or both suck and fail. Witness Translink's abandoned iOS app.
Not that I have an opinion or anything.