WhatsApp is an online chat that allows you to exchange messages in real time. Jan Koum was already disappointed in his brainchild and decided to abandon this “hopeless” endeavor, but Brian Acton convinced him to continue working. The first app was created for the iPhone, but things were tight at first due to a lot of crashes. Its name was coined from the English phrase “What’s Up?” used for the greeting format. This is how a convenient messenger appeared, which allows you to communicate online. Then, the young people thought about creating an application platform for mobile devices, which would allow them to communicate not by sending SMS but in live chat. They applied for a job at Facebook but were rejected. Its founders were two friends, Brian Acton and Jan Koum, who were working at Yahoo! but wanted to do more global things.
