This app is a live wallpaper with many customization options.
This live wallpaper simulates the movement of crosses such that it looks like a illusion:
You can not tell which of the crosses are in the foreground or in the background!

++Most of the customization options are free to use, but some have to be purchased++

These are the settings you can costumize:

🞧 Background Color
🞧 Foreground Color
🞧 Shadow Effects
🞧 Shadow Size
🞧 Animation Duration
🞧 Crosses per Row *premium*
🞧 Animation Type / Interpolator
🞧 Cross Rotation Degree *premium*