All Tests

Reaction Time

Measure how fast you react to visual stimuli. Click when the screen changes color.

Visual reaction speed and hand-eye coordination. Measures the time between stimulus and response.

Sequence Memory

Remember and repeat increasingly complex sequences. How long can you go?

Short-term visual memory and pattern recognition. Tests your working memory capacity.

Aim Trainer

Click targets as fast and accurately as possible. Precision under pressure.

Hand-eye coordination, precision, and rapid target acquisition. Core skill for FPS gaming.

Number Memory

Remember longer and longer number sequences. Challenge your digit span.

Verbal working memory and digit span. Measures your ability to hold numbers in short-term memory.

Verbal Memory

Identify words you've seen before. Avoid repeating or missing words.

Verbal recognition memory and lexical processing. Tests your ability to remember words over time.

Chimp Test

Can you beat a chimpanzee at memory? Numbers disappear after one look.

Photographic memory and spatial recall. Based on famous tests showing chimps outperforming humans.

Typing Speed

Type as many words as possible in 60 seconds. Accuracy matters.

Typing speed, accuracy, and muscle memory. Key skill for productivity and communication.

Math Speed

Solve increasingly difficult math problems as fast as possible. Test your mental arithmetic.

Mental arithmetic speed and accuracy under pressure. Tests your ability to perform calculations quickly.

Hearing Test

Measure the quietest tones you can hear across six key frequencies.

Auditory sensitivity across speech-relevant frequencies. Lower dB HL scores indicate better hearing thresholds.

Visual Acuity

Identify the direction of the gap in increasingly smaller circles.

Visual clarity and detail perception. Similar to the Landolt C eye chart used by optometrists.

Visual Memory

Remember the pattern of white squares. Grid size increases each level.

Spatial memory and visual pattern recognition. Tests your ability to remember locations.

Click Speed

How many clicks can you fit into 5 seconds? Pure speed, zero strategy.

Pure motor speed and finger dexterity. Measures how quickly you can repeatedly press a button.

Stroop Test

Pick the ink color, ignore the word. Tests cognitive control under interference.

Selective attention and inhibitory control — your brain's ability to suppress an automatic response (reading the word) in favor of a task-relevant one (naming the ink color).

Time Estimation

Stop the clock at the right moment. No counting, no peeking — just your internal sense of time.

Internal time perception — how accurately your brain tracks elapsed time without external cues. Lower deviation means a more reliable internal clock.

Stop the Clock

Visible timer counting up. Stop it as close to 10.00 seconds as you can.

Visual reflex precision and millisecond-level timing. Unlike Time Estimation (which hides the clock), this rewards how cleanly you can react to a number you can see ticking up.