Please push all the "sharing" icons to the bottom.
I think the app it trying and succeeding at looking very classy. I think this is very important. Placing all the sharing icons front and center detracts from that and makes the app feel "salesy". I would put the sharing icons at the bottom or in a context menu. Class is very hard to maintain, but doing so is what separates you from the pack.
Eddy DC shared this idea