I was asked by Airsource (they also make the Barista app you may have seen on the Apple commercials) to try out their Cellar iPhone app (they sent me a free copy) yesterday and I am just getting around to playing with it. There are 4 main sections on the app - cellar, garage, wishlist and trash.
In the Cellar you can add bottles that you have, add bottle info (vintage, producer, region, price and even take a picture of the label which is put onto the icon for the that bottle), add tasting notes about the wine and recommended pairings (there are 'quicknote' and 'quickpair' options which lets you click on one or more choices to save you the task of typing). You can also rate the wine, add drink by year and your own star rating. A lot of the fields will auto populate saving you from typing out all the information. For instance I typed Dom and then selected Dominus from the auto suggest feature for one of the bottles I entered.
In the landscape view of the cellar if you select a wine and turn the phone to portrait mode it shows your bottle of wine and all the info you added about the wine - very cool! Also, if you can't decide what to drink just shake the phone when in your cellar and it will pick a bottle for you.
Garage is where you move the empty bottles from your cellar that you have consumed and liked. This way all your tasting notes are handy. Buy the wine again and move the bottle back to the cellar. I'd also use this area to take down some info for a wine that peeked my interest in a wine shop to research it when I get home.
Wishlist is set up the same way. Here you can add wines you want to buy. You can also add bottles here the friends have emailed to you by just one click.
In the trash you can delete bottles forever, should you choose to, or keep them in there if, like me, you do not have the best memory, as a reminder not to buy that bottle again.
You can merge cellars over wifi and I backed up my cellar to my iMac with no trouble at all. It was very easy to do.
About the only improvement I think that could be made would be the addition of barcode scanning and, perhaps, the ability to post to social networks from the app. Cellar is definitely worth the $2.99 price and will be a great addition to your phone providing a nice mesh of functionality and coolness.
Cellar Screen

Wishlist Screen

Garage Screen

Trash Screen

Adding bottles to your Cellar (3 screens)



Detailed view of wine in the Cellar
