Tap your screen repeatedly to quickly measure any tempo as a song rhythm or your heart rate in beats per minute (BPM). TYPICAL USAGES• Just after an intensive sport session, you might want to count your heartbeat.• Can be used by musician and DJ to calculate the tempo (quadruple measure) of a song.• You want to know if you are born with the rhythm. In your phone, tablet or at your wrist, round and square screens are supported. HOW TO USE IT• Press anywhere repeatedly to measure the BPM• Long press to restart a new session TROUBLESHOOTING FOR WEAR 1.* DEVICESWait 10 to 20 seconds after install in order to be able to launch this application on your wearable device.If it is still not available, "Resync apps" or uninstall and then re-install it again, and be sure to have enough free space.