This app was mentioned in 4 comments, with an average of 1.50 upvotes
I had the same problem with a new phone a few weeks ago. Arrivo seems to have disappeared from the Play Store search results, but it can still be installed if you have the link.
I use Arrivo for Android. It's great for buses, especially if you don't know where you are. The train feature could use a little work - fine if you know what train you are catching but if you don't... not so much.
Arrivo Sydney claims to work with Android Wear. Haven't tried it though (Android Wear, I mean - I use the app itself all the time).