For years, wine fans have been sharing their thoughts on a site—and a highly sortable database with more than 1 million wines and 2 million reviews—called CellarTracker. Now the database is portable, assuming you have an iPhone, iPad, iPod Touch, or Android. Better still, Cor.kz lets you scan a bottle's bar code to read about it and get comparisons with other wines. A glossary decodes regions and grape names. A "wish list" keeps track of the wines you want to try next. A "consumption history" feature remember the wine you loved last week; no more hoping you'll recognize the label in the store or the name on a wine list. And maybe best of all: The app shows pricing data from hundreds of online sources so you won't overpay again. Got a terrible palate? Sorry, this app can't help you there.