This is not a stand alone app. Theme require Kustom Live Wallpaper Maker PRO application ( not free version of this app)

What you need:

✔ Kustom (KLWP) PRO
✔ Compatible launcher that supported by KLWP (Nova launcher is recommended)

How to install:

✔ Download Kustom Kards Theme and KLWP PRO application
✔ Open your KLWP app, choose menu icon on top left, then load preset
✔ Find and tap on the Kustom Kards Theme
✔ Hit "SAVE" button on the top right

Instructions:

In the Nova launcher settings you need:
✔ select 3 screen
✔ set wallpaper scrolling
✔ hide status bar and dock

In the KLWP settings you need:
✔ select 3 screens

Please contact me with any questions/issues before leaving a negative rating.

Thanks Jacopo Patone for Mockup - https://plus.google.com/+JacopoPatone