The tracker is useless; on the day I needed to use it, the app kept saying "the tracker is experiencing difficulties". Which really meant that absolutely no information was available about the location of any of the vessels and their expected arrival at any of the stops. Even the "show my location" feature would not work, even though I had location services enabled and granted permission to the app. Not going to need it beyond today, so this one is getting uninstalled right now...
Water Taxi Tracker at Google Play market analyse
