WhatsApp is a popular cross-platform text messaging app that lets you text and talk using only a data plan. The most popular messenger in the world. WhatsApp is arguably the best chat app. Key components of WhatsApp include Video and Voice Calls. This means that you will be able to call people in your contact list who are using this app without any charges.
The best thing about what makes it so big is its Enormous global user base. It eliminates the need for a texting plan. Encrypted messaging which is secure enables you to have a secure chat or group chat. Group messaging and its pro tools enable you to engage with a large number of people easily. Voice calling. Supports media attachments.