With so many 5-taco reviews, I bought two codes. I found it to be very ordinary.
The sign-up process is awful, and that sets the tone of the interface. The page metadata e.g. project names, doesn't remain persistent and so every time you save, you overwrite your older projects unless you constantly remember to repick from the drop-down lists. I found that very frustrating.
There is no way to input an article and optimise it, none that I could find anyway. There is no SEO or optimising. And although many people said it produced an entire "1000 word" article at a click I could only see it producing 200 - 300 words at a time, and then irrelevant paragraphs had to be deleted in the editing, so about 120 useful words each time. This means that it will take you ten "write more" clicks and editing to produce your first pass of text.
The content quality was very average and more obviously AI-generated than other tools I am using.
When I tried to generate contrasting topics with contrasting words in the title and initial sentences and keywords, the system failed to pick up on the contrast. It generated all about one aspect and nothing about the contrasting aspect. I tried this because in other reviews people have mentioned that it generated good quality content for difficult or arcane topics.
That was not my experience. For example, "Why is strength training better for seniors than aerobics training" along with a well-defined Article Brief and keywords produced 99% about strength training even after many regenerations of the outlines, adding to the outlines, changing the keywords and creating several versions. "What is greenwashing and why is it bad for the environment" was the same kind of result - very ordinary and mostly obviously AI-generated.
I could see glimmers of hope and some useful material generated. Still, seriously, if I compare this with Frase.io, for example, it is not even in the ballpark, and that's why I refunded. Frase.io does require more work, but I vastly prefer the result (or WriterZen).
I can see how it might suit some queries; however, I prefer to have better quality for a little more effort and less frustration. That said, you've nothing to lose by trying it, as I did.