Active users of Whatsapp, the cross-platform mobile-messaging app, have grown from 200 million in April 2013 to 430 million according to WhatsApp CEO Jan Koum.
This is the fastest growth in usage seen in a messaging app in recent years.
In this increasingly popular environment of Private messaging dominated by social networks like Twitter, Facebook, Instagram and Snapchat, WhatsApp continues to hold its own. The number of messages sent and received via whatsapp have more than doubled from 20 billion per day to 50 billion per day.
Statista's chart, below, shows the progression of WhatsApp's active user base and daily-message volume over the past 10 months.