KATOVIA / CHALLENGE
Your friend makes the next move.
One score. One link. A new challenge.
REACTION DUEL
Wait for the signal, tap, then send a target to a friend.
YOUR RESULT
CREATE A CHALLENGECasual targets are editable and scores are measured on your device. There is no verified ranking.
CREATE A CHALLENGEA little challenge together
Create a short, casual challenge with Reaction Duel. Press READY, then tap on the TAP signal after a random delay. An early tap lets you retry without recording a score. Send the result link to a friend; it carries your target reaction time. A lower time wins, a higher time loses, and equal times tie. After the result, rematch or share a new link with your own score. Scores are measured in the browser, targets can be edited, and this is not a verified ranking. It is independent of your Daily score. Leaving the tab interrupts an active attempt.