Dont Bother
Several reviews said its worth the VERY long wait for download/install but Im afraid not.
For reference, I have a 15" 2.53GHz MacBook Pro with 4GB of RAM running Mac OS X 10.6.8.
The 1st time I tried running RA HD Free, iTunes came on... and RA HD Free quit when I changed over to iTuens to see what was going on.
The 2nd time I tried running RA HD Free, after an interminably long wait (over a minute) staring at the spinning beach ball on a dark screen, I tried the Escape key and the program suddenly began to run for about 7 seconds, then asked if I was sure I wanted to quit... and quit on its own before I clicked anything.
The 3rd attempt brought me to the now-familiar dark screen & spinning beach ball, and after just shy of THREE MINUTES waiting for it to do something I forced a shutdown.
There will not be a 4th attempt, this bloated brick of an app has been deleted from my hard drive.
b_s_l about Real Aquarium HD Free