Yeah I have messed with that in the past but KOReader doesn't have an iOS client so then forced to use the calibre server reader and it's all just not a fluid process. While I am thankful to have calibre as a tool it has always been a bit annoying to deal with for a few reasons: Feels completed bloated in terms of features and GUI, every time I open the app there is a update to be downloaded and no in app updates, the reader itself on desktops isn't that great, etc.

I get that I can sort of hack together some parts of what I want but really I want the Plex experience of once I have thrown an mp4 onto my server it is just a first class experience viewing and resuming on any device I own equivalent or better than media viewers from the likes of netflix, hbo, etc. I just want that same sort of experience with regards to eBooks, not a hacked together hodgepodge of homelab sync tools and configuration.