WhatsApp is a messaging app that is used by millions of people all over the world. It has been in the market for a while now and it has become one of the most popular messaging apps. Whatsapp can be used on your phone as well as your computer. You can use it to communicate with friends, family, and other people you know. You can also use it to send messages for work or school purposes. Whatsapp is a great app to use when you need to stay in touch with people who are important to you.