If you need to do more than just read PDF files on your tablet, then you need iAnnotate. It turns your tablet into a world-class productivity tool for reading, marking up, and sharing PDFs, Word documents, PowerPoint files, and images.
I’ve used iAnnotate for almost two years, and use it daily. Before that I bought and tried 6 similar apps. This is the best of them all. With over 1,000,000 users worldwide, I’m not the only one who thinks so.
Best of all, this app which normally sells for $9.95, is on sale though October 30, 2013 for $2.99. To read more about it, go to http://www.branchfire.com/iannotate/. To buy it go to the App Store if you have an iPad, or to the Play Store if you have an Android tablet.