Hidden Chat Plus for WhatsApp is the best available app to read and reply to your WhatsApp contacts without reveal yourself online either update your last seen time. That way you will be hiding your last seen time and people will not know if you are chatting or not with your WhatsApp contacts.
How Hidden WhatsApp works?
The first time, the app will request you the read notifications permission to be aware when someone text you and the contact who did it. This way you will be able to reply through Hidden Chat Plus for WhatsApp in a hidden mode.
Once in the app, we will be able to read and reply WhatsApp messages when a contact write to us. It is important that, as long as you want to remain hidden, don’t open WhatsApp app.
Note that the contacts we can reply depends on many external factors, so for example, every time the application or the device is restarted, the list will be empty. The list will grow up as more people write us.