Best wine app

Does everything I had been looking for in a wine app:
* simple, concise info on grapes and regional wines
* food pairing - also simple and clear
* easy to follow interface

I would recommend reading the book Great Wine Made Simple and checking out Winefolly web and book in tandem with using this app as they organize info similarly and so will pair well.

MBA wi about Pocket Wine: Guide & Cellar, v3.2