Unlike the others, this app actually LISTENS to the music using the phone's on-board microphone. Simply start the app, and the BPM is updated once every seven seconds.

MusIcon™ is a picture where you can move around it and listen to different music moments. The sounds and music change depending on the place and time. MusIcon™ is an image with an interactive soundscape.

More info at:http://kranidiotis.gr/musicon-composition-a/

SoundGrid is an Android app that lets you assign audio files to buttons in a grid. You can even record your own sounds from the microphone!

Sleek metronome with tap tempo

Identify new chord and note relationships within the Musical Circle of Fourths or Fifths

A grid of cells that play a tone in sequence - similar to a tenori-on

Feel like going to a show, but not sure what band to see? Wristband will find shows around you and present you with a playlist so you can discover new music.