I've used https://www.overleaf.com/gallery/tagged/cv#.Vi6Bz2SrReU in the past for my wife. I haven't really looked at any other apps but I like how I can just export PDF directly and not having to deal with exporting/creating the PDF on my own.

I'd like to learn LaTeX at some point but at this point, CVs are the only thing I use it for...