Need a file sorting app or Automator action

One of my hobbies is digital photography, and in the past 9 months I've snapped several thousand images in both .JPG and .NEF formats. All of these files were transferred with Nikon Transfer, and until recently I had Nikon Transfer set to create a new folder by sequential number like 01, 02, 03, 04, etc.. What I would like to do is run an app or automator action that would look at each of the image file dates, create folders based on those unique dates, then sort each image date into it's dated folder.

Are there any apps or actions that can do this? I've setup Nikon Transfer to create folders based on image dates instead of sequential numbers so I can avoid this problem in the future. TIA!