You can use the app to read customer reviews, find an Apple Retail Store in your area and monitor in-store events. Speaking of the brick-and-mortar stores, if you're planning a visit you can first use the Apple Store app to arrange personal shopping, schedule a Genius Bar appointment or organize a One to One session.
And we thought those vending machines were dangerously convenient. After years of growing accustomed to the easy of "tap and buy" with the App Store, it's a bit frightening to have a Mac mini or the like just as accessible.
Apple Store for iPhone is free and available now.