Professional classical guitar teacher here. At this stage, it's too early for this to be useful in my personal teaching practice. You undoubtedly have a featur

Professional classical guitar teacher here. At this stage, it's too early for this to be useful in my personal teaching practice. You undoubtedly have a feature comparison matrix. Hats off for what you've already accomplished. AND I can see almost immediate use for your app at the stage it is in, with a slightly different angle! My solfege colleagues would kill for a simple way to integrate music notation and text. Or a quick and easy way to build rich solfege exercises. I suspect that that may be much easier both to pull off and monetise than yet another (and for now rather feature poor) music notation app.