I mostly use the bike except when someone else using it.. So far my only issue with the app is the Android version doesn't have GPS tracking capabilities like my GF IPhone. Team Android Lowering the rating because there's no reason why GPS tracking hasn't been added to the Android version forcing you to use multiple apps in order to track your outdoors workouts Request a rate option for the app. People would for the instructors could get their ratings via the app as well.