Mobile messaging app WhatsApp now has 900 million regular and active users around the world, following the addition of 100 million users in last five months.<br />"WhatsApp now has 900 million monthly active users," WhatsApp co-founder Jan Koum said in a Facebook post.<br />In February last year, WhatsApp was acquired by social networking site Facebook, its biggest buyout till date, for a whopping $19 billion.<br />In his post, Koum also tagged Facebook CEO Mark Zuckerberg, who promptly put up a post congratulating him on the milestone.<br />Previously, WhatsApp has said its service has seen strong uptake, specially across developing nations like Brazil, India and Russia.<br />In November, the company said India accounted for 70 million of its active users, which was over a 10th of its global users back then.
