I'm afraid that this rather nicely done app is a bit out of place in this time of financial and economic implosion here in the States and probably European countries as well. The era of conspicuous consumption is past and most folks have a lot more on their minds than maintaining their wine cellars (in other words, the party's over, boys and girls!). Stagflation, skyrocketing food and energy prices, bank failures, corporate and business failures, rising unemployment, collapsing real estate values, people losing their homes to foreclosures, an economic depression on the horizon, and a Weimar style hyperinflation likely at some point, keeping our cellars stocked with Chateau Lafite is very low priority for most of us.
Weinkeller is most definitely an anachronism now. I'll stick with a jug of good old "dego" red, or , as we in the sixties used to say dayglo red to wash down my plate of spaghetti and meatballs.