Re your comment number 2, Skim is a reader with the ability to add notes, whereas PDF Editor program states it is an editor?, or is that incorrect?

Here's the problem: this app seems to say it can "edit them" when referring to PDFs, but it is NOT clear on what it means. The Feature list actually doesn't mention being able to EDIT the existing text of PDFs.

So, basically, this thing seems suspicious. Does it actually let you modify existing text and images within PDFs, or just put your own notes on top? If the latter, then Skim already does that. For example, in Skim, you can put a white rectangle over a section of a PDF, then put new text over that (trying to match fonts), then save that as a final PDF. However, you have not truly "edited" the existing text/images of the original PDF.

I suspect that this thing does no more than Skim, and perhaps not as well as Skim. Interestingly, the screen-shot shows similar tools to Skim. Also, Skim is open source, and under a BSD license, so there's a chance (without my knowing this or even looking!) that this was based on Skim's source code, since the license would probably allow that. Still, if that is the case, it seems deceptive to call (name!!) this a PDF "editor" when it is really an annotator. Adobe Acrobat is a PDF editor - you can change the existing text and images of PDFs.

Hi
I believe you are correct in your assumption :-)

It is a bit naughty.