@ Thanks for your visiting my profile @ My main Skills and Experiences : ? Native: iOS, Android (Objective-C, Swift, Java, C#) ? Chat and Messaging Engine: XMPP, OpenTok WebRTC ? Video/audio/image processing: Core graphics, Core image, OpenCV, OpenGL, GPU Image, CoreAudio, EZAudio, Pitch Control, Bass,audiotoolbox framework  ? Bluetooth Low Energy (BLE), iBeacon, Wifi, NFC, credit card reader  ?Location based GPS tracking, Google Maps API, Geolocation, Open Street Maps, Online/Offline map integration. ? Push and local notification, Calendar, Alarm ? Advertise : iAd, Adwirl, Revmob, Chartboost, Flurry, Tapjoy, ? diawi, Testflight, Github, Bitbucket, SVN