Anything your phone can measure is an event — reaction, taps, voice, steps, and more every update. Every Game Center leaderboard has a winner at both ends, and today's board resets every day.
No account. No sign-up. Korean · English · Japanese.
The fastest reaction is 1st. So is the slowest. You don't have to be good — you have to be extreme. Somewhere, you're already 1st at something.
Everyone in the world shares one window. It resets at midnight Korea time, and the app shows the countdown. Few players means a real shot at 1st.
Every event is measured by your phone's own sensors. Nothing leaves the device but a number.
