Hi, there any app that just let members to post their advert or item without set post title? 

I want to get something that I will set categories as differents places zone, then I just upload images and some custom fields information and done. 

The case I am try to get it done is post Real State item, by now I can see all these apps in the Marketplace demand title when post somethings, that isn't what we needed, I have 100 real state item need to posted, what title it needed? So I think post with title is a obstacle for what I am searching to done. 

And how would they be displayed? Searched, clicked? 🤷🏻‍♂️

There is no way in which to create a topic within a subject, as this is a required item for the software to operate. As mentioned above, they are actually displayed using the title in most areas.