One Circle - Draw one circle

One Circle is a minimalist yet surprisingly addictive circle-drawing challenge. The idea is simple: draw a circle on the screen, and the app instantly evaluates your stroke using roundness, closure, and smoothness to produce a score and grade. Every attempt is quick, clear, and satisfying, making it easy to jump back in for one more try.

It works as a light casual game, but it is also a fun precision challenge. There is no complicated setup and no long tutorial. Open the app, draw once, and get your result within seconds.

If you want to take it further, sign in to save your scores and drawing paths, review your personal history, track your best performances, and submit your top results to the leaderboard. Global, Today, and 7-Day rankings help turn every great score into a real challenge.

You can also turn your latest result into a shareable score card, save it as an image, or send it directly to friends so every near-perfect circle is worth showing off.

Main features:

- Draw a circle and get scored instantly
- Score grades and multi-factor feedback
- Save results and path history
- View history details
- Global, Today, and 7-Day leaderboards
- Shareable score card export
- Email OTP sign-in
- English and Chinese language support
- Privacy policy, user agreement, and account management settings

If you enjoy simple, fast, replayable experiences, One Circle is built to make you want just one more attempt.