I am not sure what this app is supposed to be. Is it a place for new filters, is it a fandom site? Either way the only content I’ve seen is others work that have been taken from various locations on the internet and placed in this app. I haven’t seen much in the way of original work, aside from filter options. But the thing about filters is there is no one size fits all.
Any filter I have ever used I am either not entirely happy with the outcome, or I end up changing the setting to fit my original photos. This app seems more like a giant copyright nightmare that I would rather not get involved in but, seeing what I’ve seen I can’t help but think “is this even legal?!”
Given all of this and, my own experience with copyright, I am just going to steer clear of this app.