Just installed and tried sync. Hmm. It works but some of grievances.

I synced 142 files at once and basically i could not scroll transfer window list because it was so badly stuttering and it would have taken too much of finger swiping because it started from bottom. Also device heated little a bit. I do not know how resource critical file uploading is?

I do not know if slow scrolling was because of neat animation besides currently uploading file or just low resources, but IMO even thought eye-candy is in some places nice, but if it slows down or fills too much pixels then it´s just in away. I hope that it´s suspended when you are not looking transfer window.

Also when syncing the main page doesn´t show any indication of on going progress like 1/23 files synced.

Feature requests:
Possibility to select multiple files and download them
Possibility to download whole directory
Double click functionality
Long press functionality

Great application

.edit
Also I didn´t try but what happens if syncing is running on "background" and you start renamind/removing/downloading files on main window?