At first post Dreamr team mentioned comparison between other social media apps/sites and Dreamr. In that comparison section, Dreamr will also have secure communication services like WhatsApp. So users will be able to chat with each other?
For me what trumps whatsapp and make Dreamr a worthy competition is the help and dream achievement they are keen on providing. Outside this I don't see how Dreamr would be able to beat big social media outlets like whatsapp.