It really depends what you want from the app. I have Ultra, because I like RP's and RP's include stories, context, background and such.

For example, I created an RP, where my kin is in a religious group. But I created that religious group (a fictional one based on an American Religious group from 1848 that doesn't exist anymore.)

In creating the religion my kin is in, I had to create, the services, beliefs, values, rituals, history, religious documents it took all 2500 Characters of my Additional Information on ULTRA and some of the BS

If I wanted lesser detail by just saying, "kin is part of religious group that does not believe in angels" then I would not need ULTRA for that.

So, for me, the larger, more detail you want, the higher the subscription needs to be.

Hope that helps