Time Guru Metronome

Verdict

This is a metronome built around randomly silencing the beat to test your internal timing, not a general-purpose tuner. Musicians who stick with it call it deep and flexible, but several reviewers found the interface confusing before it clicked.

Best for

A musician already comfortable with metronome practice who wants to train internal rhythm by having the click drop out unpredictably, not someone looking for a simple tap-tempo tool.

Dealbreaker

Multiple reviewers describe the interface as confusing or clunky at first, so expect a learning curve before it feels usable.