WhatsApp is a free messaging app used by people all over the world. It can be used to send and receive text, photos, videos, documents, and audio files. People might prefer to use WhatsApp instead of texting because it is a more secure way to communicate as it is end-to-end encrypted, meaning that messages cannot be accessed by anyone else outside of the conversation. Additionally, WhatsApp offers free video and voice calls, so users can easily stay in touch with friends and family members who are not in the same location. Furthermore, there are many features within the app that make it easier to communicate, such as group chats and the ability to easily share your location.