Kik has 100 million users

"Kik, a popular messaging app for teenagers has reached 100-million registered users - more than half in the US - and it is also “quietly becoming a browser as well,”reports Forbes magazine.
One part of the appeal is having user names and not having to give your phone number. The free, HTML 5-based platform is adding 250,000 users a day . It is said to be growing quickly in terms of features to challenge similar apps like LINE, WeChat and now Instagram too."

Source:  The Drum, 13th December 2013