This is rather silly
The app description is unclear. All this app does is present a button that you can tap on to the beat of the music. It purports to then tell you the songs BPM. I was hoping I could play a song and it would tell me. I make playlists based on BPMs for workouts. I typically do this manually. On my limited testing the app was off by a few beats when compared with my manual method (play song, tap my finger to the beat for 30 seconds while watching a clock, then double the count. From years of experience I know my method is accurate. This app is not. However it is close and lot easier. If close is enough for you this app should be fine. Its not enough for me.
...Dale about
BPM, v2.60