Papers syncs your content between devices using our Cloud service. Upon importing content into your ReadCube Papers library (via desktop, web, or mobile), a copy will sync to our Cloud server to then disperse to your other devices. 

Papers has not been programmed to support third party sync options such as Dropbox, GDrive, OneDrive, or iCloud. 

Attempting to set up your library using one of these services may cause damage to your library and is not advised.