adnX today released CheckUp 3, an update to their innovative tool that allows you to check the health and monitor the behavior of a Mac computer. CheckUp is able to detect common problems with a Mac & OS X, and will also provide useful tips to help you fix them. It’s as easy as looking at the dashboard of your car. It allows you to access all of your Mac’s basic information from your Main IP address to your specific Operating System. It also allows you to view the performance of your processor.