Is there any official In App Purchase for windows phone same like iPhone (which connects to iTunes).
Here is the nice explanation about In App Purchase
In-app purchase (IAP) means buying more content for the app through Marketplace while in the app. Another name often used for them is micro-transactions for the smaller purchases. Buying a new costume for your character. You need several thousand gold coins to get that pet cat in the game you are playing. You could play the game and grind away killing monsters over several hours and earn the XP to get the cat, or you could pay $2 now via in-app purchase and have the cat straight away.
Thanks