See how your brain performs today.
Three tasks straight out of the psych-literature cookbook — simple reaction time, digit-span memory, and Stroop color-word interference. 90 seconds in the browser. Scoring formula is public.
No signup · Under 2 minutes · Works on desktop and mobile
Is this a real cognitive test?
Yes. The three tasks — reaction time, digit-span memory, and Stroop interference — are standard paradigms used in cognitive-psychology research. The scoring is research-grade for tracking your own trends; it is not a clinical diagnostic.
Is my data saved or sold?
Nothing is saved unless you give us an email. Your score lives in your browser's local storage — leave the site and it travels with you. We do not sell any data. Email submission is optional and only used for your retest reminder.
Is this a medical assessment?
No. Your cognitive performance varies with sleep, hydration, caffeine, stress, and time of day. For persistent concerns, talk to a clinician.
How accurate are the results?
The individual tests are based on validated research paradigms, but your specific score depends on factors we can't control — device timing, distractions, fatigue. For the most reliable reading, take the scan 2–3 times over different days and average.
How do I improve my score?
Sleep is the single biggest lever — most people gain 10–20 points after a full 8-hour night. Hydration, caffeine timing (morning only), and omega-3 or magnesium can shift scores over weeks. Retest monthly to see what's working.
Can I retake it?
Yes. Your first scan is saved locally as a baseline. Each retake is compared against it so you can see movement. Retest reminders are included if you save your email.
Based on reaction-time tests, digit-span tasks, and the Stroop paradigm — three validated measures used in cognitive-neuroscience research. Not a medical diagnostic. Individual results vary with sleep, hydration, stress, and time of day.