Daily games for your ears.

About Hearkle — train your ear

Hearkle is a free set of daily ear-training games that sharpen how finely you hear pitch — whether one tone is higher or lower than another, and by how much. Pitch discrimination is a trainable skill, not a gift you are born with: with short, regular practice your ear measurably improves, and most players start hearing smaller differences within a few weeks.

Every day brings one puzzle per game, the same for everyone, with no account, no install and nothing ever leaving your device. Ear-stretching games like Hearfork estimate your just-noticeable difference (JND) — the smallest pitch gap you can reliably hear, measured in cents (a hundredth of a semitone). A lower score means a finer ear and surer intonation.

A trained ear pays off far beyond the games. It helps singers and instrumentalists tune up and stay in tune, makes transcribing music by ear and finding intervals easier, and even helps you follow one voice through a noisy room. Once you can hear small differences, intonation stops being guesswork and becomes something you can feel.

Want the theory behind the play? Our Learn about pitch guides explain what pitch is, musical intervals and how to train your ear — each paired with a game so you can hear it, not just read about it. The daily games and every guide stay free forever; a Personal Pass simply adds progress tracking, and our tools for teachers and self-learners turn any game into a one-link assignment.