I tried since they started here on Appsumo. Now I had 2 sites flagged as spam, i don't know if its because of them or not, but its like a big coincidence. I did not see much movement about indexing on my pages, forget it to index nothing if you don't have a sitemap, it does not crawl any site or anything like that. If they want to be a SEO app more than just an indexer, a crawler is a must. Anyway my overall experience was not good, not useful The second taco its because the dashboard is spotless and well-designed, the usability is not good, but design is nice.

About the red flags of the title, answers were squishy at least, and is not clear about the rest of the tools that are developing, no idea if i will have it or not. For me that is a very big flashy red flag, call me alarmist, but i bought enough garbage here on Appsumo that stopped to work or changed a lot of the original arrangement with bad practices.

Maybe in the future, more polished, if they come back, will try it again.