This is ambitious. It seems to be an attempt to cram a lot of information and functionality in a single page, which should be applauded. Right now there's lots

This is ambitious. It seems to be an attempt to cram a lot of information and functionality in a single page, which should be applauded. Right now there's lots of little gremlins in here: Click the CAGED button and a piano keyboard appears. Click it again and a "go premium" prompt pops up. Click "Custom" under Harmony and everything disappears, replaced by a create-your-own scale window with no way back. Can't close the Popup Piano (what's it for? It doesn't make sound) Try to "play along" so you can hear the notes just resets the scale to whatever note you click on. More than a nit, I can't figure out what Chord Mode under Harmony is doing. There's no separation by position. So it's not much good for learning how to play any particular chord. It's showing every possibility at the same time, rather than what you'd actually play. Fretboard orientation seems to revert to zero-on-the-right silently, very confusing as there's no reduction in fret spacing as you go up the neck. The scale description (I guess?) section says "E major for Guitarundefined" then has the same copy text about the first mode of the church no matter what I select. And now it's totally confused, I asked for E Major scale and the fretboard is locked to something that's no recognizable scale, while the piano keyboard is tracking the selection I make. Overall I found usability to be a real challenge, with lots of unexpected behavior and "modal" aspects (in the UX sense) that confused me. I kept having to configure the UI to show me things I know easily to see how they were reflected on screen so I could understand what it was showing me with stuff I know less well, like some of the modes (musical sense) that I'm trying to internalize. Ultimately it isn't going to help me more than a good book in its current state, but I'll bookmark it and check back.