The only thing I use a list or app for is my precuts. I like to know how many of each line of a layer cake I have or how many jelly rolls of a particular line of fabric I have. Those are the things I forget. So I have a notebook I keep and when I get a jelly roll or charm pack I just put it in, in alphabetical order. Works for me. I've been telling myself I am going to do it on my computer, but, never want to take to time to do it. Oh, well, if worse comes to worse, I just look. LOL!!!