The Skull-iQ App supports the following Skullcandy products: -Push® Active -Grind® -Grind Fuel -Crusher® ANC 2 -Rail ANC -Rail *If your app enabled Skullcandy product is not listed above, this app will not work for you. Introducing the Skull-iQ App – The exclusive app for Skullcandy products featuring Smart Feature Technology. Download the app to experience everything that Skull-iQ offers, including the ability to download new features when they become available. The Skull-iQ App gives users complete control over features such as: - Hands-Free Voice Control – Turn on hands-free voice functionality to control features like Stay-Aware mode, Spotify®, media controls and more. - Voice Assistants – Go hands-free by enabling Alexa, “Hey iHeart” and “Hey TuneIn”, for fast and direct access to your favorite artists, radio, news and sports, without any App downloads. - Personalized sound – Take a hearing test and tune your audio device to your unique hearing. - Customized button settings – Change the way you interact with your device based on the features you use most.