Wine Paradigm is a great app
I upgraded to the premium version (cant leave my review there for some reason), and Im finding it very handy. Service is excellent -- I received a very quick response to some questions I had about using it, and then I was able to quickly enter all of my wines to keep track of what I own and what I like. I love the food pairing help and the fact that there are lots of types of wines -- not just the most common. Definitely worth the $3.99.
cryogini about
Pocket Wine Pairing: Sommelier