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Filter by category to find a reaction, memory, perception, hearing, or math test. Every test gives instant results with no sign-up required.
Stroop Effect Test
Name the ink color, not the word. A classic test of selective attention and cognitive control.
Reaction Time Test
How fast can you react to a visual cue? Measure your reflexes in milliseconds.
Color Blind Test
Screen for red-green color vision deficiency with Ishihara-style plates.
Aim Trainer Test
Click 30 targets as fast as you can. Track your average click speed and accuracy.
Click Speed Test (CPS)
Measure how many clicks per second (CPS) you can perform in 5 seconds.
Number Memory Test
Memorize an increasingly long string of digits. How many can you hold at once?
Verbal Memory Test
Decide whether each word is new or one you've already seen. Survive as long as you can.
Sequence Memory Test
Repeat an ever-growing pattern of flashing tiles, chimp-test style.
Typing Speed Test
Type the given passage as fast and accurately as you can. Get your live WPM.
Visual Memory Test
Remember which tiles on a grid lit up, then click them back in any order.
Hearing Range Test
Find the highest and lowest frequencies you can hear, in Hz. Headphones recommended.
Mental Math Speed Test
Solve as many quick arithmetic problems as you can before time runs out.
Color Perception Test
Arrange shades of the same hue in the correct order to test your color discrimination.
Attention & Focus Test
Respond only to the correct target and hold back on the rest. Tests sustained focus.