The app is what I was most impressed with. The app is very interactive and covers a lot of what I wanted in a pet app. The menu is user friendly and easy to navigate. The camera viewing is clear and audio sounds great. The portion controls works great. The unit does need to be cleaned 2-3 times a week. This ensures that the food feeder does not get stuck and block the food. Overall, I am extremely impressed by the app, camera, audio, and the whole unit.