Not only is it an excellent utility for marking up documents, but it also allows you to manage your document library effectively as well. PDF Expert from Readdle has growth its feature set nicely over the past several years. There are many good PDF utilities, but PDF Expert is the one that I have been working with the most lately and offers everything you need in managing and editing PDF documents. That is where an application like PDF Expert comes into play.
Sometimes, though, you need to do more with a PDF document that requires advanced options. Last month I shared a tech tip on working with PDFs with the built-in tools from iOS, which anyone with an iPhone or iPad can use right away.