🧪 SKILL TESTS
Reaction Time Test
Measure your reflex speed in milliseconds. 5-round average with human benchmark comparison.
Most Popular
Click Speed Test (CPS)
How many clicks per second can you achieve? 8 durations from 1 to 100 seconds.
CPS Test
Typing Speed Test
Measure your WPM and accuracy in real time. Average is 40 WPM — how fast do you type?
WPM Test
Stimulation Clicker
Free aim trainer. Hit moving targets to improve mouse accuracy for FPS games.
Aim Training
Jitter Click Test
Practice jitter clicking technique and measure your maximum CPS.
Jitter Click
Spacebar Speed Test
How fast can you press the spacebar per second? Multiple durations available.
HPS Test
Number Memory Test
How many digits can you memorize? Tests working memory capacity. Average is 7 digits.
Memory Test
🎮 GAMES
Clicker Tycoon
Free idle clicker game. Click, upgrade, prestige, build a city. Progress saves automatically.
Idle Game
Dinosaur Game
Classic Chrome T-Rex runner. Jump over cacti, duck under pterodactyls.
Endless Runner
Snake Game
Classic snake — eat food to grow longer, avoid hitting yourself or walls.
Classic Game
Coreball Game
Shoot balls onto the rotating core without colliding. Timing and precision puzzle.
Puzzle Game
About Reaction Speed Test
Reaction Speed Test is a free browser-based platform for measuring and improving your cognitive performance. Every tool runs directly in your browser — no download, no account, no cost. Works on any device including mobile phones and tablets.
Our tests use the browser's performance.now() API for sub-millisecond timing accuracy. Scores are stored only on your device — we never collect personal data. All tools are free forever.
Used by gamers benchmarking their reflexes, students measuring cognitive baselines, developers testing input latency, and curious users comparing themselves to global averages.