WhatsApp is usually criticized for its user privacy controls, although it's mostly all about wanting to know when my messages have been read without anyone knowing I've read theirs. And with this idea in mind, a group of developers has come up with Agent Spy.
App to read WhatsApp messages in incognito mode
This application established a so-called incognito mode to read the messages we receive on WhatsApp. Thus, you'll be able to read messages without your friends and other contacts receiving the blue check or viewing your latest online time. However, you'll be able to carry on seeing when they went online or if they've read your messages.
However, you should think about your privacy and consider who you're granting access to your text messages... in any case, it replaces a usual function in WhatsApp MODs which you might want to get hold of since many of the users of these unofficial clients are getting banned from the service.