Tagtraum Industries has introduced BeatGauge (http://tinyurl.com/njyfwvl), a new music utility for Mac OS X. It automatically calculates BPM (beats per minute) for songs stored in iTunes.
You drop songs onto the app window and watch BeatGauge do its magic. Knowing the tempo of songs is important for dancers, DJs, spinning, aerobics, running, and many other beat-oriented activities and workouts.
BeatGauge 1.0.0 requires Mac OS X Yosemite. Music files must be locally stored in iTunes and writable. iCloud songs must be downloaded before analysis. DRM protected songs can’t be analyzed. Also, Tagatraum says that BPM detection isn’t 100% accurate and that some values may be off by a factor of two.
BeatGauge 1.0.0 is available for US$7.99 on the Mac App Store in the Music category.