Hello Sir / Madam,
I'm very well aware of functionalities such as Registration, Login, Profile, Facebook, One2One/Group Chat,GPS Location, Event management, Friends, Group, Interest, Map, Photo Share, etc.
In-App Purchase
Paypal SDK
Advertisement - AdMob, iAd, Chartboost, Revmob, LeadBolt, Adwhirl, Tapjoy etc.
Looking forward to hear from you.
Regards