TenSync vs Clock Challenge

TenSync is a minimal timing game: tap Start, then tap Stop at exactly 10.00 seconds. The twist: when other iPhones running TenSync are on the same Wi-Fi, they auto-discover each other and start every round at the exact same moment (synchronized within ±2 ms). Each device stops independently and sees its own result, so you can race friends in the same room with no setup, no accounts, no servers. A 1-second tick metronome (toggleable) helps you stay in rhythm. An 11-second time limit prevents endless waits. Your best attempt is tracked locally. No accounts. No ads. No tracking.

Stop the timer at exactly 10.000 seconds. That's it. That's the game. You get ONE attempt per day. One press, one score. Land on the board and your name goes up in lights. Miss it and the clock is locked until tomorrow. PLAY IN ONE TAP No sign-up wall. Open the app, hit START, hit STOP. Claim your player name after your first shot to put your time on the leaderboard. ONE SHOT A DAY No retries. No grinding. Your daily press is your score, so make it count. YOUR NAME IN LIGHTS Today's board shows the exact time everyone stopped at. The Month and Year boards rank average miss over rolling 30 and 365 days, so consistency wins the long game. Streak board tracks who shows up every day. BUILD YOUR STREAK Play every day to grow your streak. Miss a day and it's gone. SIMPLE. BRUTAL. FAIR. Same clock, same target, same single chance for everyone. Millisecond precision. Server-checked times, so no cheaters on this board. Link your email once to keep your name and streak on every device. Free to play. No ads. Fun for all ages. Good luck... and NO BLINKING.