Chronkle

Chronkle is a collection of short daily games that train how finely you perceive tempo. In the title game, Chronkle, you hear one target tempo and tap the beat or move a slider to match its speed in beats per minute, with five tries and a closeness percentage after each. Each game gives one puzzle a day, numbered (puzzle 276 on 3 October 2026), and the same puzzle goes to everyone.

The other games come at the same skill from different sides. Chrondle asks you to spot the one off-tempo beat, Chronsort to sort beats from slow to fast, Chronmory to repeat a rhythm and Chrontween to find the tempo halfway between two. Others include a 30-second speed round, a faster-or-slower streak, Chrondrift, where you hold a drifting tempo steady, and Chronecho, where you reproduce a tempo from memory. Chronfork estimates your just-noticeable difference, the smallest change in tempo you can feel, in milliseconds or as a share of the beat; a lower score means sharper perception.

Every game has a Daily challenge and a Playground for practice, a short how-to-play with an example, and links to guides that explain the theory behind it. The site runs in many languages, needs no login or install and keeps everything on your device. The daily games and guides are free; an optional Personal Pass adds progress tracking, and there are tools for teachers. The same makers run sister sites for colour (Huekle), pitch (Hearkle) and rhythm (Chronkle).