Millions of iPhone and Android users turn to WhatsApp as their go-to messaging app, and it's easy to see why. The app comes standard with tons of great features for messaging, calling, and browsing, and that's not even mentioning the fact that it has a larger user base than any other messenger service out there.
Let's say you want to send out a message to all of your friends. Normally, you'd have to put all of the recipients into one giant group thread to do this. But when people started responding to your message, everyone in the group would get a notification, so your friends would probably be annoyed that you started the group thread in the first place. Luckily, if you're using WhatsApp, this isn't an issue.