Tests
Free screening tests for eye, color perception and more. All processing happens in your browser.
All Tests
Color Blindness Test
Test your color vision type and severity for free in your browser using Ishihara-style plates.
Reaction Time Test
How fast can you click when the screen turns green? Measure your reaction time in milliseconds.
Visual Memory Test
Which squares were lit? Grids grow across 15 levels — test your visual memory.
Click Speed Test
How many times can you click in 20, 40 or 60 seconds? Kohi-style click speed test.
Line Follow Test
Follow the path without going off. Level mode (15 levels) or endless mode. Test your hand-eye coordination and patience.
Stroop Color Word Test
Click the color the word is written in, not what it says. How much does the Stroop effect fool your brain?
Spin the Wheel
Add names, spin, pick a winner. Animated wheel, bulk name import, remove winner and spin again.
Dice Roller
Roll 1–9 dice at once. Dice spin with animation, slow down, and land — total is calculated.
Online Lottery Draw
Enter candidates with commas or new lines, draw random winner(s). Multiple winners supported.
Coin Flip Prediction
Heads or tails for 15 rounds? Predict before each flip. But beware — the same side won't keep repeating!
Aim Trainer
Click glowing targets as fast and accurately as possible. 3 difficulty levels, rank system.
Hearing Range Test
Pure sine tones from 125 Hz to 16,000 Hz across 9 frequencies. Adaptive threshold detection with personal audiogram chart.
Contrast Sensitivity Test
Over 30 levels, shades get closer and squares multiply. Find the odd one out — how sensitive are your eyes?
Typing Speed Test
How many words per minute can you type? 5 modes: Classic, No Error, Speed Burst, Marathon and Quote.