Very good, not quite great.
I like the app and use it to track my cellar inventory of 300-400 bottles. I agree that the pro reviews/ratings, drink-by dates, and vast amount of recognizable bottles make this a very good app. The cellar management is generally pretty good, however it seems to lack some basic intuitiveness like being able to sort by red and white before listing all the varietals. The app also crashes fairly frequently too which is pretty annoying. Overall not too bad and seems to the the easiest and best out of 2 or 3 Ive tried.
PSU-hockey17 about
Corkz: Wine Reviews and Cellar, v5.12