I have NeuronWriter which does some SEO and AI writing, but Textmetrics seems to be built for publishing websites pointing out how your H1 should mention your keyword etc. It is more of a YOAST like blog SEO tool, which can be used for websites as well. It has a Grammarly like engine to help make your text gender neutral and points out words that could be changed to make it more readable and understandable to a wider audience. I threw in an article I was getting ready to put on my website and it flagged a pile of things to clean up. While I don't have time to fix them all right now, I'm glad I got in on a lifetime deal as it looks easy enough to improve my score. My websites need a lot of work and I think this tool will help me along.