“WhatsApp,” is a popular messaging app that’s free to download and use. WhatsApp is like a digital phone for your smartphone or computer. It allows you to send text messages, make phone calls, and share pictures or videos with friends and family. It’s similar to sending a letter or talking on the phone, but it’s done through the internet. You can create groups to chat with multiple people at once, and it’s a convenient way to stay connected with loved ones, especially if they’re in different parts of the world.