
Quickly, the popularity of the app started to decline. The communication platform announced that, for its use, users had to pay. However, in 2013 everything seemed to change. WhatsApp, since its inception was available for free. Later, by 2010, it began to be available on Android devices. The application was available for Blackberry and iPhone devices.

This talk, it should be noted, was carried out by other means (such as SMS). In this way, they indicated their availability to establish a chat. Through it, users shared with their contacts what they were doing at the time. The main idea of WhatsApp is that it will work as a smart agenda. In addition to having appeared as director of the operations team of Yahoo!.

Koum had a lot of experience, since he had worked with companies such as Adobe and Apple. WhatsApp was launched in February 2009 by Jan Koum, a Ukrainian programmer residing in the United States.
