


It works seamlessly across Mac and iPad, fully Dropbox/OneDrive integrated on the iPad and (as is the case with Macs generally) just works. It lacks some of the critical features, but it is a pleasure to use. PDF Expert is far smoother, quicker and appears more polished. It's slower to scroll, manoeuvre through the document and operate the software. It has better search tools and better annotation tools. It has OCR and electronic page labelling, which PDF Expert doesn't currently have (rumour is that OCR is on the way, but that's been their standard position for well over a year). There is absolutely no doubt, Adobe has far FAR more features. In a standoff between Adobe and PDF Expert, it comes down to what you want. The features aren't as rich as either PDF Expert or Adobe. My overall impression was that it was a little clunky. I can't speak to PDF Pen completely: I have used a trial version, but not the full version. This is an area on which I can speak with some degree of authority. For work, I often navigate huge PDF documents, often many thousands of pages a day.
