Tom and Bill released an app named “BTK Twins” for Android on December 19, 2011, and on iOS on January 16, 2012, to keep in touch with their fans. On the app, Tom and Bill posted photos, videos, and text messages, and fans could leave messages which the twins often respond to. In November 2013, the app was removed from both the Android and IOS stores, due to the imminent release of Tokio Hotel’s new album. 