Chordie

Chordie is an app designed for musicians, teachers, producers, or anyone who works in music. It's designed to make the arduous task of learning or teaching chord names and how to read sheet music with ease.

Whatever you throw at Chordie, it'll tell you exactly what it is, and make it extremely easy to explain it to everyone else. You can play anything with your midi controller, and see the note names, the manuscript notation, the chord name, and the guitar voicing.