ScopeFocus
fun
sports_esports
Games
person
Profile
en
tr
login
Sign in
Scope
Focus
0.247
seconds
TAP!
bolt
Pulse
React the instant the counter starts — how fast can you stop it?
schedule
2 min
psychology
Sustained Attention
How to play
hourglass_top
Wait for the counter to start — stay alert
touch_app
Tap as fast as possible to stop the counter
warning
Reactions over 500ms count as a lapse
play_arrow
Play