Good concept

Needs a little work in setup without modifying code directly.

Plugin settings should be separate, saving settings for just desktop, mobile, or tablet are all the same. Change one it changes them all to same setting.

Mobile share follow bar sticks and doesn’t scroll using a older Samsung Galaxy S

Here is how to disable if needed.
http://ww.wp.xz.cn/support/topic/cannot-disable-mobile?replies=2