BPM Graph computes the beats per minute (BPM) as you to tap out the beat of the music you are hearing. FOUR BPM COUNTS: the display shows the average BPM of the last 4, 16, 32 and all taps you have made. These measures converge to the accurate BPM of the music. HISTORY GRAPH: the four counts are shown graphically each tap and a history of past counts moves to the left. This allows you to see trends in the counts. OTHER FEATURES: you can set bar size and color.