Whats app Messenger for Windows Phone 8 is live at Windows Phone Store, which is a cross platform application, let you allow to send and receive SMS, pictures, audio notes, and video messages for free by using 3G or Wi-Fi on your mobile device.
“WhatsApp Messenger is a smartphone messenger available for Windows Phone, Android, BlackBerry, iPhone, and Nokia phones. WhatsApp uses your 3G or WiFi (when available) to message with friends and family. First year FREE! ($0.99/year after).”
Whats app for Windows Phone is compatible with new Windows 8 mobiles such as Nokia Lumia 920, Nokia Lumia 822, HTC 8X and many more.
Download Whats App for Windows Phone 8
Whats App for iOS