Free Memory: http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=294768681&mt=8 iStat: http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=303034517&mt=8
I personally use the 2.99 one System Activity Monitor, but the .99 cent one will work just as good I believe. I just like checking up on little statistics to make sure all is ok, and all memory is freed up as much as possible. I run Beatmaker a lot, and that sometimes uses a lot after extended use. I swear by it like I said, but the .99 cent one's are good.
