title_body: Is it possible to sync ebook app with desktop applications?
upvoted_answer: You didn't mention if you wanted to do this over the network or over USB.
  
  I've personally used the following approaches:
  
  
  The Kobo app automatically syncs directly with the Kobo device when you attach the device to a computer using a USB cable.
  I can copy ebooks files directly to my Kindle and/or Android phone when attached to my computer using normal drag-and-drop.
  I can email ebook files to my Android phone and/or use Dropbox to access them, and when I click on them on the phone, they get copied to my local storage for reading.
  
  
  None of these require accessing the ebook store from the mobile device.