Looks nice, but after downloading it, I was a bit disappointed. I mistakenly assumed that this would compare to something like Alfred's Adult Piano Courses [1]

Looks nice, but after downloading it, I was a bit disappointed. I mistakenly assumed that this would compare to something like Alfred's Adult Piano Courses [1], but it's much simpler than that. Personally, I doubt that is wise to charge money for this. Sure, you put in some work, but the value is fairly low, and you'd probably only get payments from disappointed customers. Edit: apparently the added value comes from using a MIDI device, which I don't have, so my comment might be a bit too negative. Most piano apps support microphone input, which is easier to set up and attracts a larger audience. [1] https://www.alfred.com/alfreds-adult-piano-courses/b/ https://www.alfred.com/alfreds-adult-piano-courses/b/