I don’t think it’s necessary for smaller patterns like the ones you’ve mostly been doing so far. Mostly I just do those by looking at the PDF on my phone while stitching.
But when you get into the big full coverage things (my main project in there has over 100k stitches and a LOT of confetti) it’s honestly invaluable for most of us who try it.
Still, each to their own and all that. But if you do use it, back up your progress lol 😅