A target frequency will play for a few seconds. Focus on its pitch.
Drag up or down (or use ↑↓ keys) to tune the live tone until it matches.
Hit Submit to lock your answer. Score 10 for a perfect match!
Finish all rounds to get your final score and share it.
Get ready…
Your progress will be lost.
All records and stats will be erased.
Are you sure you want to exit?