Glitchy & Disappointing

The app allows you to read PDFs and sort them into folders. That is about all it can do well.
The app is particularly glitchy when annotating PDFs, especially when typing directly on them. If you do not click out of the typing window (vs. Clicking the little x at the bottom), the text deletes which is a huge pain. The app also crashes regularly.
You also cannot go directly back to the folder you were just in - if you press back, it takes you back to the first folder.
I also paid for dropbox compatibility, but the files are not synced automatically so it is almost completely useless. If you make any edits you would have to reupload and delete the old copy of the file.

Catherine Friedman about Foxit PDF Editor, v5.1.0