Question 1

How many taps does it take?

Accepted Answer

Two give a first number; eight or so give a steady one. The reading is the average of your last eight intervals, so it keeps following you if the song speeds up.

Question 2

Why did it reset?

Accepted Answer

A gap of more than two seconds between taps starts a new measurement, so a pause between two songs is not averaged into one tempo.

Question 3

Can it detect the BPM from a file instead?

Accepted Answer

Yes — the Song BPM finder analyses an uploaded track or one from your library. Tap tempo is for when the music is playing somewhere else.

Tap tempo — find the BPM by tapping

Questions