Practice

Train without touching the leaderboard

Choose a sense, difficulty, and question count. Practice sessions are generated locally and never submit official scores.

Choose a module

Memorize a color, then rebuild it with hue, saturation, and brightness controls.

Watch a silent interval, then hold a button for the same duration without numeric hints.

Hear a tone once, then slide to the frequency you remember.

Quick calibration

MixedMixed

Questions3 questions

Focused set

MixedHard

Questions5 questions

Full drill

MixedBrutal

Questions9 questions