I love this app! It is so easy to set up & personalize. With all the aesthetic tweaks you can make, I had my desktop looking sleek & functional. You can change line thickness & color, fonts, number placement, subsidiary calendar layout, calendar size, transparency, weekend & holiday notation, & themes. I created my own theme with a picture & settings of my own.
Just a note: the user who claimed it did not work did not realize that the large number below the main calendar months name is the month number, not the day/date (October, 10th month). I had no issues whatsoever getting it up & running--it was a seamless installation.
Giving the app the ability to link to iCal would be an added plus, & I did read at the support web site that the feature is coming! But regardless, if you are looking for a way to dress up your desktop, I give this app 5 stars for creativity & 4 stars for functionality (only because there is no interface with iCal. When that update comes, its 5 stars all around!).