Draw the most perfect circle you can, freehand, in one stroke. We fit the ideal circle to your line, measure every wobble, and rate you to the tenth of a percent with a letter grade and feedback. Beat your best, build a streak, climb the ranks. Dead simple, wildly addictive, perfect on mobile.

Studio

Rainy Tuesday Games

Released

June 28, 2026

Controls

Mouse · Touch

Leaderboard

🏆 Yes — climb the ranks