Really good. I enjoyed this audio tour although sometimes the narrator was a bit much (the fake laughter). It also seemed to be aimed at those starting in Vancouver and going to Whistler but we still managed to enjoy the 'tour' by going the opposite direction. I thought the app worked very well, you have to have your location on but the app doesn't need to be open / phone awake - it knows when you're getting close to a location on the tour and will just start talking. You can also follow your progress on the map within the app. A great idea!