WhatsApp
URL: https://knowledge.ivjn.us/en/works/whatsapp.html

Cross-platform messaging app owned by Meta, launched in 2009 and acquired by Facebook in 2014.

WhatsApp is a cross-platform messaging app owned by [Meta](https://knowledge.ivjn.us/en/organizations/meta.html), founded in February 2009 by Jan Koum and Brian Acton and acquired by Facebook in 2014 for about US$19 billion.

The app uses a phone number as its account, offers end-to-end encrypted text, voice and video communication plus groups, channels and business messaging, and ranks among the world's largest messaging apps by monthly active users.

Updated: 2026-10-30

Relations:
- Published by: Meta https://knowledge.ivjn.us/en/organizations/meta.html

Sources:
- About WhatsApp https://www.whatsapp.com/about/
- Facebook to Acquire WhatsApp https://about.fb.com/news/2014/02/facebook-to-acquire-whatsapp/