Hi,

I'm looking for an ebook reader that can work on at least Android and Windows 8 (RT and/or desktop) that will sync your books and reading progress across your devices. Obviously Google Books and Amazon Kindle apps do this, but Amazon doesn't sync progress for your own books and Google Play Books is absolutely horrid on a desktop.I've probably got about 30 books on my Amazon Kindle account (bought through Amazon) that all sync perfectly fine between my Android phone and Windows 8 tablet. But for the handful of books (mostly PDFs that I've converted to mobi via Calibre) I've uploaded to my account progress and books are not synced. As well, Amazon has blocked the send-to-Kindle functionality for the Windows reader applications: send to Kindle only works on my phone.I've got all my PDF books syncing progress in Google Play Books, but I cannot stand the interface in the browser or the Chrome App. I can't find a way to set the interface to be more reader friendly, such as a dark background and light text. Even if I turn my brightness down to the lowest, the black text on white background is still too damn glaring for my eyes while reading in bed.Has anyone else found a solution to syncing your books and reading progress across Windows and Android? I really want to stick with Kindle because I already have a library with them (and a backlog of a few titles), but not being able to sync my PDFs and epubs kind of kills it for me. And Google Play Books works really well across all my available devices (Android, Windows 8, Windows RT), but there's no standalone application like there is for Kindle, and the in-browser experience is horrible.Rumours of an Xbox Reading application on the way, but what are the chances that MS will allow full syncing across all platforms?

Please help.

I didn't find the right solution from the Internet.

References:-
https://arstechnica.com/civis/viewtopic.php?t=1239045
Animated explainer video production agency