The Old Reader, I'm sure most people here know, is a Google Reader alternative. I kinda prefer it than Feedly because it's cleaner and not image-heavy. Anyway, please do add a sync feature to it. I think a lot of people will be very grateful.
Can you write Java Code? Can you add the feature yourself? Here is some information how to start: http://wiki.rssowl.org/index.php/Main_Page
I'm sorry I'm just a subscriber here. I have no coding knowledge in any form of computer language.