Draw one smooth loop around the dot. How round can you go?
Draw a circle as perfectly round as you can, freehand.
You'll get a roundness score from 0–100%. Beat your best. Are you a compass?
Pick a difficulty up top: Easy has a guide ring and forgiving scoring, Medium is standard, Hard is thin & strict, and Extreme is thin & strict with a trippy illusion background and a 3.5-second time limit — once you start drawing, finish the loop before the clock hits zero or it scores whatever you've drawn.