iAnnotate from Branchfire used to be my favorite tool for viewing and annotating PDFs on the iPad. As I explain on my TechTools page, I sync more than 2 Gb of journal articles on Dropbox with iAnnotate 3 on my iPad. Branchfire recently launched iAnnotate 4, “a major update of the app with features you’ve all been asking for”. It is available for the introductory price of $4 from 3 May 2016 until 11 May 2016. After that, it costs $10. It has many new features, including iPhone support, support for viewing and annotating .doc, .ppt, .xls and web pages, and the ability to access files from iCloud Drive, Google Drive, OneDrive in addition to DropBox. Unfortunately, Branchfire silently dropped iAnnotate’s ability to download files for offline use and to sync back newly made annotations when reconnecting to the internet. Without this capability, the app is no longer useful to me. I think I’ll switch to GoodReader ($5) for all my file reading. GoodReader is a much better tool for reading and managing files than iAnnotate and its syncing abilities are unsurpassed. I have used it since I bought my first iPad years ago. I used iAnnotate because GoodReader’s features for PDF annotation were initially rather meager, but they steadily improved over time.