Amazing
Its not perfect but it really does the job. I use a mount on my hihat stand to hold the phone on gigs. There is a 3 or 4 second lag so the trick is not to chase the reading. With the running graph and the bpm display its easy to see if songs are tending to speed up or slow down before things get out of control. As mentioned it sometimes drops the time signature and will display double or half time, but it recovers quickly. I love this thing! What astounds me is that it actually pretty much works! One bug is that if I get a text it stops working. It would be great if there was a count in metronome. Currently itss my favorite music app.....
Jukesce about
liveBPM - Beat Detector