Horrible. There's not one thing about this app and overall purpose of this technology any human being needs. Yes, the sound from these devices is impressive. But a horrible layout with useless festures and an in-app support system that is anything but... it becomes evident of its purpose. These products examine people for control and their money. Nothing more. The ones that march in the streets are so stupid to realize they give power to people by doing that. And they buy this stuff. Wow.