Whats app is very excellent aap for me why do I consider it as important. Because many of the people are on whats aap and they do using it. It is very useful aap. We are connected with the people whom we know but we will not be connecting to the unknown people whom we dont know. And recently the devlopers are developing many things like video and audio calling in group which was not present in older versions but now these delopers are deloping these additions to whats aap and it will be updated very soon