High quality sound?

I have not had an opportunity to use this app much but one glaring difference between the claims of the app and what the app actually does is the "high quality nylon sting guitar sound. It actually sounds like a $20 synthesizer. I would never mistake it for a nylon string guitar. I am sure that this app will help me learn the fret board more quickly and easily. What I dont like is the misrepresentation of the writer of this app.

Pizmo si about Guitar Sight Reading Trainer