Horribly Slow If You Use A Lot Of Pen Annotations – PaperShip - Mendeley & Zotero Review

I use it for more than a year. It integrates with my Zotero database and that is the good part. The bad part is that it gets horribly slow when a document has a number of pen annotations. I don’t know how they exactly render pen annotations, but the performance of the pen tool is miles away from apps such as Notability, for example. If you plan to use this app for writing on the margins of your paper, Paper Ship is not for you. Also, the pen scribes made in an external tools do not persist in the document when you reopen it in Paper Ship.
Review by Garry Shawn on PaperShip - Mendeley & Zotero.