What'sApp is an app for texting on smartphones, it needs Internet to send a text massege, image, or even a video, at September of 2015 WhatsApp had a user base of up to 900 million, making it the most globally popular communication application.
What'sApp founded in by Brian Acton and Jan Koum.
On February 9, 2014 Facebook announced it was acquiring WhatsApp for 19 billion dollars.