Well if you don’t understand it what hope have I got? I have heard of snapchat but no idea what kik is
Yes; to be fair, I also know a bit about Snapchat because my son and daughter both use it. Having asked Mr Google, I now know a little about kik as well: it's another messaging service, developed in Canada and particularly popular there and in the US. In the words of Wikipedia:
Kik Messenger has drawn controversy due to its reported involvement in a number of incidents of child exploitation. The app has been criticized as unsafe for minors due to its anonymity features and allegedly weak parental control mechanisms
... something to be aware of, perhaps?