WhatsApp Plus APK is a modified version of WhatsApp that offers extra features like custom themes, different fonts, hiding online status, and sending larger files. Many people use it for more personalization and better control over their chats. However, since it is not an official app, it may not be safe. Using WhatsApp Plus APK can lead to security risks, data leaks, or even getting banned from WhatsApp. It is always best to use the official WhatsApp for safety and updates.