iAnnotate for Good - subscription license (1 month)

This is iAnnotate - easy to use app for reading, marking-up, and sharing PDFs. You can annotate PDFs, organize them in the iAnnotate Library, and share them with colleagues and on different devices. It gives you access to highlighters, pencils, bookmarks, and text notes, as well as quick search and navigation of your PDFs. It also features multi-tabbed reading, smooth highlighting, multiple options for reading, including tapping to advance or go back a screen.