App has a lot of potential, but this potential is at the moment overruled by the many bugs in the program. Most of the problems come when trying to annotate text. PDF's tend to disappear, free highlights can not be made when sentences are to close to one another (you first need to shut down the app and can then continue), sometimes the program is suddenly very slow with loading (even with small and simple files) and other PDF's can not be opened at all. Also missing an overall search field at he home page. He now only searches for documents at the main page, but not in the folders you created. This is very inconvenient when you can't remember in which map you have put something. Overall conclusion: do not buy this app, there are similar apps available that work better for half the price!
