This post explains how the wallpaper works with the tile background effects. The "System wallpaper" is a normal Android wallpaper system and you can see that in your lock screen or in even another launcher after selecting it. The "App wallpaper" is applied only inside of Square home app but you can use some beautiful tile background effects on it. Square Home currently supports a total of five tile background effects. Go to Home options > Tile sizes and styles > Background effect and select one of the following effects. 1. No effect This is the default value when you first install the launcher. You can disable the wallpaper or use System wallpaper or App wallpaper to use this effect. If you disable the wallpaper, it uses a black background color, which you can change in Home options > Behavior and UI > Background color. It looks a bit boring at first, but you can use different tile colors and rounded corners to create a nice screen like this. Background ...
The Official Blog of Square Home