This is a very practical tool to have in my toolkit, and I thank you for it.

Oh wow, this looks great! What was the process behind it?

By process you mean method? or reason for it? Or both?

Good question! For me personally, the app works about as well, although at this point it's honestly hard to keep looking at the text: I keep instinctively glancing away because that's so honed in my brain at this point that is to say I'm probably not a good test case because of how much I've practiced.

The real difference between this and printing/writing it out is that this is something you have to focus on, while having a printout means you can carry it everywhere and learn while doing something else.

My guess is for a beginner, it'd be a good idea to start with the app to get a good handle on the text, and then carry a card around for less focused practice.