Jan Koum, the CEO of WhatsApp has announced that the popular messaging service now has about 400 million active users across the globe
In a blog post, Jan also claimed that WhatsApp has added 100 million users in the last four months. More importantly, this isn’t just the number of people who registered for WhatsApp, but those who are actively using the service every month.

Jan Koum said “WhatsApp has just 50 employees, and most of us are engineers. We’ve arrived at this point without spending a dollar on targeted ads or big marketing campaigns. We’re here because of all the people who share their WhatsApp stories with co-workers, friends, and loved ones – stories we love to hear”.

Mr. Koum has also mentioned a couple of stories, which illustrates the use of the popular messaging app.