All Tests

Reaction Time

Record the delay between a browser color change and your click or key press.

The browser-recorded interval between a visual color change and your click or SPACE-key response.

Sequence Memory

Repeat tile sequences that gain one step after each completed level.

The longest visual tile sequence you reproduce correctly in this browser task.

Aim Trainer

Click each on-screen target and record targets hit per second.

Target-selection speed and pointer accuracy within this browser task.

Number Memory

Recall displayed digit strings that gain one digit after each completed level.

The longest displayed digit string you reproduce correctly in this task.

Verbal Memory

Classify each displayed word as new or previously shown in the run.

Seen-versus-new word decisions and the resulting correct-answer streak in this task.

Chimp Test

Recall numbered tile positions after the numbers are hidden.

Rapid spatial encoding and recall within this numbered-grid browser task.

Typing Speed

Type the displayed words for 60 seconds and record speed with accuracy.

Words per minute and accuracy while copying displayed text in this browser task.

Math Speed

Solve 20 displayed arithmetic problems and record correct answers.

Correct answers across 20 timed addition, subtraction, and multiplication problems.

Tone Audibility

Compare how softly you detect browser-generated tones across six frequencies.

Relative tone audibility in your current browser, device, headphones, and room. Lower relative levels mean you detected softer generated tones within this setup.

Visual Detail

Identify the opening in progressively smaller browser-rendered symbols.

A visual-only browser challenge based on recognizing the opening in a rendered symbol.

Visual Memory

Recreate a briefly displayed square pattern as the grid changes by level.

Correctly recalled square locations in a briefly displayed grid pattern.

Click Speed

Count how many clicks or SPACE-key presses you make in five seconds.

The number of repeated clicks or SPACE-key presses recorded during five seconds.

Stroop Test

Choose the ink color while ignoring a conflicting color word.

Correct and incorrect ink-color choices when the displayed word names a different color.

Time Estimation

Stop a hidden timer at four target durations and compare the deviation.

The percentage difference between each hidden target duration and the moment you stop the timer.

Stop the Clock

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

The absolute timing error between a visible 10.00-second target and your stop action.