I also would love to see them put out the linux app sooner rather than later. But in the meantime I am working on an app to sync between device and desktop app. You can check out the project here
. It will also be able to remove items from the "I'm Reading" list and various other things like that. I'm using Qt to code it so it should be available in Linux, Windows, and if someone gives it a little love, Mac as well.