Please note : This app isn't optimised for tablets.
HOW TO SET IT AS LOCKSCREEN WALLPAPER AS WELL (SAMSUNG DEVICES)
To set as lock screen wallpaper (only on Samsung devices) , first set a live wallpaper on both the home screen and the lock screen and then set your favorite material wallpaper from the app. The wallpaper will be set to both the lock screen and the home screen. This feature cannot be added seperately as it's exclusive to Samsung devices.