“WhatsApp now has 900 million monthly active users,” WhatsApp co-founder Jan Koum said in a Facebook post. In February last year, WhatsApp was acquired by social networking site Facebook, its biggest buyout till date, for a whopping USD 19 billion. In his post, Koum also tagged Facebook CEO Mark Zuckerberg, who promptly put up a post congratulating him on the milestone.
WhatsApp has experienced consistent growth since it was acquired by Facebook last year for $19 billion — one of the largest deals in Silicon Valley history. At the beginning of the year, the service had 700 million users, up from the 600 million it counted in August 2014. While the WhatsApp’s user numbers still trail parent Facebook’s 1.44 billion monthly active users, they are nearly triple that of Twitter, which revealed in July it had 316 million monthly users, a growth rate of just 3 percent from the previous quarter.
In March, WhatsApp became only the second non-Google app after Facebook to have been installed over a billion times on Android phones. It’s not possible to say exactly how many people have installed it, since Google only says that it is between 1 billion and 5 billion.