Paid app – PDF Merge X: Merge PDF Review

This is not a free app, but a paid one. I do not mind paying for an app but don’t want to feel as if I need to be tricked into buying one. Edit: Thanks for the response! I was in the market for a mobile pdf program, but instead decided it is easier for my file management to just continue to do so on my computer.
Review by kool-aid man rules on PDF Merge X: Merge PDF.