2009
01
January
WhatsApp was founded by Brian Acton and Jan Koum.
2009
24
February
e incorporated WhatsApp Inc. in California. The same year WhatsApp 2.0 was released. Also, the app launched on the iPhone App Store in November 2009.
2009
24
December
The ability to send photos via WhatsApp was added to the iPhone version.
2011
01
January
WhatsApp was announced one of the top 20 apps at Apple's U.S. App Store.
2013
01
February
WhatsApp had 200 million active users.
2014
01
January
Facebook, Inc. acquired WhatsApp for US$19 billion.
2015
01
January
WhatsApp had 700 million monthly users and over 30 billion messages were sent every day.
2015
01
April
Voice calls were added to WhatsApp.
2016
01
January
WhatsApp had one billion users.
WhatsApp invested $250,000 into the startup ecosystem and provided 500 startups with Facebook ad credits of $500 each.