WhatsApp introduced free calling between it's users a while ago and has been rumored to introduce video calling in near future. WeChat a competing China based instant messaging service has now introduced a new feature which will appeal to many, - a cheap VOIP calling feature allowing users to call domestic and international phone calls to cellphones and landliness across the globe.
Named WeChat Out, the feature is similar to Skype Out and Viber Out. WeChat is claiming their service to be cheaper with better call quality then the competition. WeChat is also offering a free trial credit of $0.99, which is enough for upto 100 minutes of international calls.