GoodReader 4 is a paid upgrade to the GoodReader app used to read, mark up and organize PDFs.
The app is now universal and includes the following features:
– PDF Page Management – add, rearrange, delete, rotate, extract and email individual pages, split and merge files
– PDF Page Slider now shows page previews
– icon view for file browser, with larger previews
– collapsible tool area on the main screen
– “New PDF” button to create an empty file for your important notes and drawings
This app has the ability to read, save and modify PDFs using a variety of transfer and sync methods. You can transfer files via USB and WiFi as well.
You can organize your PDFs and read other documents from this app.
Right now, the app is discounted from its regular $4.99 price to $2.99.
You can learn more about the app here and specific how-tos here.