Let Us know teeny-weeny details of WhatsApp WhatsApp was founded by Brian Acton and Jan koum in 2009, who were the former employees of Yahoo.
Koum named the app “WhatsApp” to sound like “What’s Up”.
By February 2013, WhatsApp had about 200 million active users and 50 staff members.
In a December 2013 blog post, WhatsApp claimed that 400 million active users used the service each month.
On February 19, 2014, months after a venture capital financing round at a $1.5 billion valuation, Facebook announced it was acquiring WhatsApp for US$19 billion, its largest acquisition to date.
By early January 2015, WhatsApp had 700 million monthly users and over 30 billion messages every day.