I have never gotten anything except Amazon purchases to sync to my Android Kindle app. I can manually copy .mobi (and I think .azw) files to my Android and the

I have never gotten anything except Amazon purchases to sync to my Android Kindle app. I can manually copy .mobi (and I think .azw) files to my Android and the Kindle app will read them, but there's no Whispersync between devices except for official Amazon purchases. It's the same with my iPod Touch but not many people realize you can manually copy books to the Kindle app.