Apple has quietly released an update to its iOS Apple store app. The new feature that the app has gained is the Express Checkout feature, which would enable any user to buy a product by tapping ‘Buy’ on the app.
The billing is automatically linked to your login ID which is further synced with your credit card information shared with Apple.
Also new is the ability to share your location which helps you to get notification of deals around you. Apple announced this feature at the WWDC 2012, and has made available only for users of iPhone 4S.