I know that everyone has been waiting a long time for sync and I want to reassure you that it is high on our list of priorities. As users of Squid ourselves, it’s something we really want as well! We appreciate your patience.
This is something we’ve been investigating since the app’s inception and we continue to investigate constantly. Syncing is a very difficult problem to solve, especially with regards to handwritten notes which can be combined with images and text and contain backgrounds from multiple PDFs. I don’t have an ETA for when sync will be supported, but rest assured this is a high priority for us. We appreciate everyone’s feedback on this idea.Danielle Olson commented
Yep, still waiting for this one... I love Papyrus, but I had to stop using it years ago because of the lack of sync :( It's just not feasible to do the whole backup process every time I need to hop between the phone & tablet, I use them both too much. Had to switch to OneNote, not happy about it. Would gladly run back to Papyrus and pay for the feature if this happens. *Especially* if it integrates with Google Drive, that would be the ultimate dream come true.