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Jan Borysovych Koum [a] (born February 24, 1976 [1]) is a Ukrainian-American billionaire businessman and computer programmer. He is the co-founder and former CEO of WhatsApp, a mobile messaging app which was acquired by Facebook in 2014 for US$19.3 billion.
India is by far WhatsApp's largest market in terms of total number of users. In May 2014, WhatsApp crossed 50 million monthly active users in India, which is also its largest country by the number of monthly active users, [361] then 70 million in October 2014, making users in India 10% of WhatsApp's total user base. [362]
In 2009, Jan Koum and Acton co-founded WhatsApp, [4] a mobile messaging application which was acquired by Facebook in February 2014 for US$19 billion. Acton left WhatsApp in September 2017 to start the Signal Foundation. [5] According to Forbes (2020), Acton is the 836th-richest person in the world, with a net worth of $2.5 billion. [4]
In 2007, Zuckerberg was added to MIT Technology Review's TR35 list as one of the top 35 innovators in the world under the age of 35. [39] Vanity Fair magazine named Zuckerberg number 1 on its 2010 list of the Top 100 "most influential people of the Information Age". [40] Zuckerberg ranked number 23 on the Vanity Fair 100 list in 2009. [41]
WhatsApp adds the ability to react to messages with any emoji. [43] 2023 May Product WhatsApp announces users will be able to edit messages up to 15 minutes after being sent. [44] 2023 June Product WhatsApp announces Channels, a feature that allows one-to-many communication for updates, and no defined limit for number of followers.
The company clarified that people should use their authentic real-world names but need not use their legal names. [448] 2014: October 6: Acquisition: Facebook officially completes the acquisition of WhatsApp, and WhatsApp CEO Jan Koum agrees to match Mark Zuckerberg's $1 salary. [449] 2014: October 23: Product
WhatsApp founder and Chief Executive Officer Jan Koum is leaving Facebook Inc., just a few years after his messaging app was acquired by the social-media giant for $22 billion.
Within a week, WhatsApp introduces an update allowing users to disable this feature. [17] Jan 21, 2015: WhatsApp launches WhatsApp Web, a web client which can be used through a web browser by syncing with the mobile device's connection. [18] Jan 21, 2015: WhatsApp announces its policy on cracking down on 3rd-party clients, including WhatsApp+. [19]