They are basically the same, but Mile Port seems to have more programs. Mile Tracker is run by USA Today, Mile Port is run by Frequent Flyer. I have both loaded on my computer right now.

Of my programs on Mile Port, I can not get the balances for CO, NW and US. (Maybe it's just me. ) But the funny thing about NW is that I am tracking the balances of both my account and my sister's NW account, on the same scrreen under separate accounts. On my account, it says that it "can't retrieve the balance" - but on her account, it can!

IMHO, even with this glitch, I think Mile Port is better and more user-friendly!