It seems the Mac one does not have a built- in miner, right?
I don't use mac, but there is a yam file in the zip, so it should be included...
There is the answer below that claims you'll get 10MMC per day. It's around $1 for now. Do you really want to mine it?
10 is a very conservative estimation as I get ~10 with my i5.
Even when it's only 1$ - why shouldn't he mine? It's at least 2-3 times less expensive than buying. The GPU can still be used for something else. You don't like free money?