Speed Reaction Time

A free brain training test.

Swipe to see how to play ›

How to play

• Wait while the box is red — do not tap yet.
• The instant it flashes green, tap as fast as you can.
• Tapping too early is penalised, so stay patient.
• Your reaction is measured in milliseconds each round.
• A faster average means a sharper, younger reaction age.

Features

• Reaction Time cognitive test built on real psychology
• Speed difficulty over 10 rounds
• Shareable Brain Score, letter grade and brain-age estimate
• Tracks your personal best, with mutable audio cues
• Plays on touch and desktop, reduced-motion friendly

Ready to play?

A free brain training test.