According to Wikipedia: Doodle is unfocused drawing made while a person’s attention is otherwise occupied. Doodles are simple drawings that can have concrete representational meaning or may just be abstract shapes.
People like doodle game, like drawing on the napkin, design draft UI, sketch, etc. You can even swipe up and down to set the brigthness.
This time is “Doodle Clock”, clock for people who love doodle.
For lite version: 1 clock design.