WhatsCall is an amazing app by Cheetah Mobile Cloud USA which provides you free call facility from WhatsCall to WhatsCall. Also you will get 1000 points when you signup for the first time. The points are used to make free call any where in the world on any land line and mobile number. Points are consumed on per minute bases and vary according to country(120 to 200). So roughly you can make 5 minutes call with free credit you get on first signup.
But what about after wards, well this is where this app is making an impression all over the world because here you can earn free points by simply visiting the advertisers website, daily usage, installing recommended software or referring this app to your friends. This is really amazing because with the work of just few minutes you can get enough credit to talk to your friends