Sync the position / page of sideloaded EPUB books between Android device and Nook Touch?
Check out PageTurner on Google Play. It's supposed to do what you want, although there are some mixed reviews. It's worth a try though.


  PageTurner is an open-source e-book reader that allows you to sync
  your reading progress across devices, without needing a DropBox or
  Google Drive account... just enter your e-mail address and it works!