This is not a stand alone app. Theme requires Kustom Live Wallpaper Maker PRO application What you need: ✔ Kustom (KLWP) PRO That ✔ Compatible supported by KLWP launcher (Nova launcher is recommended) How to install: ✔ Download Didactic System UI for KLWP ✔ KLWP Open your app, choose menu icon on top left, then a preset load ✔ Find and tap on the Didactic System UI Theme for KLWP ✔ Hit "SAVE" button on the top right Instructions: In the settings you need Nova Launcher: ✔ select one screen ✔ Set wallpaper scrolling ✔ hide status bar and dock Please contact me with any questions / issues before leaving a negative rating.