Pros

-Easily send text and pics over the internet without having to use text messaging or data.

-Works well across the 2 biggest operating systems which are Apple and Android.
(Suspended from Blackberry)

-Notifies you of contacts that have Kik as well when you sign up.

-Indicates when messages delivers and is read. Like the iMessage from Apple.

-Group Chats

-Quick and Easy Setup.