How sharp are you today?
Test how sharp you are today, build a private streak and compete against your own best scores.
Your official result stays in this browser. Return tomorrow to continue your streak.
Test the full picture or check in quickly.
Take the official six-skill challenge once today, or run a short practice check whenever you like.
Put your reasoning under pressure.
Work through 40 original questions across patterns, logic, spatial reasoning, numbers, language and working memory. Your complete Reasoning Index and six-category profile appear immediately.
Pick one skill. Beat your last run.
Practise any skill without replacing today’s official Daily Precision score.
Reaction time test
Wait for the signal and respond across five valid trials.
Timing test
Stop hidden clocks and measure how close your internal timing is.
Visual accuracy test
Hit shrinking targets quickly without losing control.
Visual memory test
Watch a tile sequence and rebuild it in the correct order.
Focus test
React to the right signals while ignoring distractions.
Rhythm test
Hold a pulse and keep your taps close to the expected beat.
Understand the tests and the factors behind them.
Clear explanations of reaction time, devices, attention, memory, sleep, exercise and learning.
What is a good reaction time?
Why there is no universal browser number and how to compare your own results fairly.
DevicesMouse versus touchscreen reaction time
How input method and hardware can change online reaction results.
MemoryWhat is visual memory?
How short visual sequences are held, ordered and recalled.
RecoveryHow sleep affects attention and reaction
Why a rested brain is generally more consistent across timed tasks.
FocusWhat is selective attention?
How the brain responds to targets while suppressing distractions.
HardwareDoes refresh rate affect reaction tests?
Why display and input latency matter when comparing browser scores.
One score. Six reasons behind it.
The official score creates the daily reason to return. The breakdown shows what carried the run, what to practise and whether consistency is improving.
See how scoring worksQuick Draw
Clear answers.
Can I compare scores across devices?
Different screens, browsers and input hardware introduce different delays. Compare your own progress on the same setup whenever possible.
Can practice improve my score?
Practice can improve familiarity and consistency on these specific tasks. A higher browser score does not automatically mean a broad improvement in intelligence or health.
Is this a medical or clinical assessment?
No. Human Precision is designed for curiosity, practice and friendly competition. Do not use a score for health, employment, education or safety decisions.