This is a live wallpaper app with images of KITT's self-diagnosis device, which is familiar from KNIGHT RIDER.
That's the wire frame Knight 2000 spinning around on the monitor.
It looks pretty cool when it's displayed on your home screen!
It is beautiful because it is made more realistic than the real thing.

Adjustment of rotation speed/direction, angle, scaling, and display position. Free setting of background color.
Furthermore, you can also set the thickness, color, and display/non-display of the wireframe for the vehicle body, central unit, scanner, and each wireframe.

*If you want to see what it is like first, please try the Light version.
https://play.google.com/store/apps/details?id=com.kitalab.kittrollfree