nani oto? trial в Android Market

nani oto? trial (v. 1.1.0) Разработано Jaaku Lab.

This application has the following features.
1. It estimates a chord.
2. It displays positions to suppress of the fret of the guitar.
3. It displays chord progressions.
By these features, you can do the exercise of the chord performance.

Notes:
Estimating chords on this application may not be so correct that you expected.