With the continuing absence of Chromatik in the App Store, I am going to need a free PDF sheet music reader to use until after iOS 7 is introduced. iOS 7 will allow a school to reclaim app codes, meaning that they won't lose ownership after assigning them to a device. I know the best paid PDF music readers, as well as which app or apps I would purchase; but are there any free PDF music readers that will work in a pinch?
The one thing we need with the app is the ability to annotate music (therefore, Finale Songbook is not an option).
Please leave your suggestions below (Normally I leave comments turned off, but this is a situation where I am leaving them on)!