Electronic musical metronome. Metronomes are those incredibly useful tools that keep musicians on time and in sync. The real ones have a sort of clockwork function and come in a variety of styles and accuracy levels. Metronome is a multi featured timing instrument that runs on your Mac and keeps you in time. Features include tempos ranging from 40 to 240, 4 selectable click sounds (click, stick, rim shot, wood block), and 3 selectable time signatures: 2/4, 3/4, and 4/4.