A great little app for audio engineers. Simply tap a quarter note on the "Tap Here" button and you will instantly know the beats per minute of the song, and also the appropriate milliseconds for musical notes for your delay effects! A great application for use the studio and live performance. You can also set the temp via a slider or tap the BPM label to input the tempo straight from a keyboard. Flip the color scheme with the 'Flip' button to increase visibility for indoor/outdoor use.