Just press to go through the instructions and the countdown will begin when ready. From there click on the Scratch cats that appear as fast as you can. The process of showing and hiding the Scratch cats will repeat 10 times. Afterwards the project will find your average of all the times recorded.
Want to challenge friends, family or others? Post your average time in the comments for others to see. My average time is 0.236 seconds. If anyone wants to use the scripts, that is fine by me as long as you give credit to me.