Alien Blue, stylized as AlienBlue, was an iOS application for browsing Reddit. It was the official and the most popular Reddit client on the App Store at the time. The app featured a wealth of options that tailor the browsing experience to the user. As of May 2016, Alien Blue is no longer available within the App Store on iOS, and has been replaced with Reddit's own application called Reddit: The Official App which is free to download from the Google Play Store and the App Store.