https://bpmcounters.com/
BPM Counter - bpmcounters.com
BPM counter (Beats per minutes) is use to know how many beats in songs per minute.
bpm counter
https://play.google.com/store/apps/details?id=appinventor.ai_frederic_mavel.TapTempo
Tap Tempo BPM Counter DJ Tempo - Apps on Google Play
Detects the tempo of the music, Tap Tempo with precision.
tap tempobpm counterdj appson googleplay