The Arc Reactor is a real futuristic technology! Customize yor phone with Tony Stark Style! New Kitkat Launcher is now supported. A whole italian project! Please help us to develop it with comments and feedback! Arc 2 HD Reactor Holo is a theme made for the most common Android Launchers like: Apex Launcher. Nova Launcher. Adw Launcher ex. Smart Launcher. Holo Launcher.