Take a look at this infographic from Shop on Less to explore:
47+ things you should know about WhatsApp (Infographic)
As of April 2015, the app has more than 800 million active users and it is racing for the 1 billion mark at blazing speed. So, as nearly one-seventh of the earth sign up to the tool - what stats and facts do you need to know?

Nice infographic. Does the tip concerning the extension of the trial period actually work? That certainly doesn’t inspire confidence. (But who am I to complain, I have a lifetime subscription (but I’m trying to completely switch to Threema, anyway).)