Looks like an interesting project for sure, but they make it really hard to try out. At first, this submission links to a blog post with information and in the middle, a bunch of demos laid out in a grid.

I clicked on one of them, which took me to the actual app. When trying to click the button to generate something, it asks me to login/sigup. Fine, I signup. Then once finishing the sign up, I land on some sort of index page with tutorials and "my projects", but not at the demo I first wanted to see.

So I go back to HN, to this submission, click on the link but it still takes me to this index view instead of the blog post/page I first read. I just wanted to see what happened when I clicked the button inside the app...