Yes. Poker Co-pilot will do what you are looking for. Granted, it's only in its second year, but it has a nice, clean HUD w/ all the important stats.
I believe it's 59.99, but check their blog for more details
Edit: Having a mac, I also use it and have enjoyed it for sure. Steve McCleod, the creator, is real nice too and is always tweaking it to make it just a little bit better