🧠 Focus Reaction Time

Focus Reaction Time is a brisk, focused cognitive workout that challenges your reflexes & processing speed. The task is simple to learn but hard to master: tap the moment the screen turns green and measure your reaction in milliseconds. Across 12 rounds the game adapts to keep you on the edge of your ability, then rolls your performance into a single shareable Brain Score, a letter grade, and a playful estimated 'brain age' you can compare with friends. Unlike endless scrolling, a few focused minutes here genuinely exercises attention, memory and processing speed — and because it's quick, it's easy to come back daily and watch your score climb. It runs instantly in your browser on phone or desktop, keeps your best score, plays gentle audio cues you can mute, and respects reduced-motion settings. No download, no sign-up — just train your brain.

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.

Controls

Tap the on-screen buttons/tiles to answer. Works with touch or mouse. 🔊 toggles sound.

Features

• Reaction Time cognitive test built on real psychology
• Focus difficulty over 12 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

FAQ