Is there a PDF app that can do all of the following ...

[GadgetGuru72]

Hi everyone-


I am looking for a PDF app (preferably Universal, but I'm willing to buy separate iPhone and iPad apps, if necessary) that can accomplish all of the following:


(1) Free form annotations,
(2) Convert web pages to PDF while retaining formatting of the web page,
(3) Add/remove pages; rotate pages; and
(4) Merge PDFs into a single document.


Are there any apps that can do all of that? I've found apps that do one or two of them, but nothing that can do them all.


Thanks in advance.