Yes, I used the tip of a sharp knife as a pry tool to get me started. Since the screen was cracked anyway I figured I had nothing to lose. It went fine.
I got a fingernail on the metal edge and that did the trick.
I had a badly cracked screen. Packing tape helped the suction cup stick. Heating the phone helped soften the adhesive, and in the end I pried the screen up at the headphone jack with a sharp pointy knife. That helped me get the spudger underneath. Not recommended if the screen is ok, like for a battery replacement, but mine was cracked so I figured I had nothing to lose. Great guide.
I was hesitant to do this repair myself, but it went fine. All the additional comments at each step were helpful. I combined this with a battery replacement and a new life proof case and it’s like I have a new phone! I’m glad I went with ifixit, the tools, packaging and support were all top-notch.