WhatsApp is a messaging app that lets you chat with friends, family and clients. It lets you send and receive messages, make voice and video calls, and share photos, videos, and documents.
WhatsApp is free to download and use, and it’s available for Android, iPhone, Windows Phone, and BlackBerry.
WhatsApp is part of Meta (former Facebook). It launched in 2009 and now has over 1 billion users in over 180 countries.