This app is horrible at letting you know where your pictures will be cropped. It shows a huge area to work with, and I really don't think that's where the margin and bleed line are. I guess I will find out when I pick out my pictures later, how they are going to look. And, if the cropping is bad,I'll have to hear from some teenage child that I should have followed the "cropping tool" on the app...even though I centered each one of my prints. After 20 years of experience, I know photo printing.