This post on PDF apps is brought to you by Wondershare. The popularity of the PDF file format increases day by day. PDFs make it simple and reliable to share documents. However, despite the file ...

iAnnotate (US$9.99) is a full-featured iPad app for marking up PDF files with highlighting, diagrams, notes, and even audio comments. Standout features include the ability to markup DOC and PPT files ...

GoodNotes is one of the most popular notes app on iOS, and the Mac. and with good reason. It combines a great PDF viewer with a free form notes app, and mixes the two together. This week, GoodNotes 5 ...