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 co