Just as Viber, WhatsApp is a cross platform application. In 2014, Facebook bought WhatsApp for around 22 billion dollars, while the number of active users was around 600 million.

Leading developing programmers of WhatsApp are Brian Action and Jan Koum which were previously employed by Yahoo, and one of them was even denied a job in Facebook. WhatsApp is very similar to Viber, and it became available in 2009. At the time of writing, the current Android Viber version is 7.9.6.30, while the iOS version is 8.0.0.

Over time, and with updates, Viber reached amazing popularity, first as an instant messaging service, and later as service that offered high quality (HD) calls. Android version became available in May the following year, at the maximum number of users was limited to 50000 at the time, which makes this something of a test phase, only to have the full version with no limitations launched in July the same year. It became available for the first time on iOS devices in December 2010, and it represented direct competition to Skype. How Android and iOS platforms developed, two applications dealing with instant messaging became very popular: Viber and WhatsApp. Social networks live their lives for quite some time now, and with the emergence of smartphones, free communication became available in a number of ways.

Viber vs whatsapp 2016