app4mac today announced the introduction of CheckUp for Mac OS X, a new way to monitor the activity of your computer. It allows you to understand the behavior of your computer in real time and manage alerts to prevent problems in the future. CheckUp is optimized for Mac OS X 10.4 Tiger and Mac OS X 10.5 Leopard (Universal binary). CheckUp requires a Mac with a PowerPC G4, G5 processor or an Intel processor. The first public beta version is expected to be available December 10, 2007.