Great app! It's a really good idea, and now it means instead of wasting time on my phone when I have a spare 5 minutes, I can be doing something productive!
I was just wondering if an option could be added to show the fret board mirrored, as a left hander would see it? (If there is an option to do this, I can't find it!) This would make things a lot easier and also help with memorising the notes much quicker.
That's all from me!