By ON Science Japan
Open iTunes to buy and download apps.
This is an app of the metronome.
Accurate:An error of less than 22.7 micro-second.(based on theoretical calculation)
(1 micro-second is equal to 0.001 milli-second.)
Simple: Drag the white ring to change tempo.
Tone quality is like real metronome tone.
This app is for free.Try it!