Little disappointed, needs improvements

Yeah it shows chords, scales and arpeggios in all keys. But what I dont like about this app is that there is some delay time from when you strike the note and when you hear it. Im a bit disappointed that a $6 app has this flaw. It doesnt have settings for different guitar sounds either. That would have been nice. It dot think its worth it. Especially because there are other apps that do the same for less.

Erhie about Guitarist's Reference, v5.4