The Evangelion Nerv is a free unofficial application that is not affiliated with the original show or its production company. It is based on the original UCCW (Universal Custom Widget) system. This means that you can make your own home screen with your favorite Evangelion characters and the app will automatically install to be used with UCCW.

You don't need to start the application, it is already installed on your device. You can simply choose one of the available skins and install it to your device. The installation process is very simple, and it only requires one tap.

Once installed, you can simply choose your preferred skin, and you can also change the color of the icons and the background of the home screen. You can also add additional widgets to the home screen to make it more customized.