Ok here is the honest review, as a general buyer, I would have not gone into the hassle of writing a review of a product unless it was a really bad product. But here I am writing my first positive review of a product.
On App Sumo using their deal, I purchased Word Hero, Texta, and Katteb. Now although all tools have their strengths and I'll not classify any of these tools as a bad investment, what I like the most in Katteb is its spontaneity and flow. Other tools although write good content but Katteb writes it as if it is written by a professional content writer. When someone reads content generated by Katteb, it really feels as if written by a human whereas in Texta and WordHero there is a slight touch of a feeling as if the content lacks that flow. Don't take me wrong, WordHero and Texta content contains the knowledge and is free from grammatical issues but still lacks the feeling that you get from a human-written article. Plus both WordHero and Texta strangely generate a similar sort of text as if they are getting information from the same database and using the same AI.
It's a shame that Katteb only allows 15000 words on AppSumo. With a clean and sleek UI and a great AI, it can rise above its competitors, but 15000 words are just not sufficient. If they would launch a new better package, I am sure I'll be the first to get my hands on it, as I'll soon, by stacking more codes. :-)
I wish the best to Katteb and its team.