This guy posted a thread a few years ago that, for what ever reason, didn't get any attention. His program is neat, but i don't use it. Maybe others prefer handwritten or excel spread sheets...anyway, here's his web site for his software. It's windows based freeware

http://www.thegeckocam.com

Here's the original thread: http://ball-pythons.net/forums/showthread.php?t=17478