Metronome

Accent on beat 1. Numbers under the tempo are notes per click: 1 for the crawl, 4 for the picking drill. +5 is the pass step. Tap four times to set a tempo from a song. Screen stays on while it runs.

Rules that go with it

• The right practice tempo is the fastest one with zero mistakes.
• Three clean passes in a row, then +5. One miss, stay.
• Clean and even beats fast and ragged. Always.