Groupy is not ready for prime time. On Windows 10, (I am a Start 10 user so this may be related) when I click the Start button, the programs menu is empty.
On Windows 7, if I use Excel 2013, and Groupy is active, if I resize and Excel window from Maximized to smaller but not minimized, the close, minimize, maximize are cut off with no way to get them back.
So, until Groupy is in version 2, this is not worth any price - certainly not $10