I know of Website Auditor, SEO Spyglass, Rank Tracker, and Link Assistant - I downloaded them all. But Website Auditor is only good for keywords, Rank Tracker only works on published articles, the other two I don't understand.
I've been having some problems lately with my supervisor because I'm always either under-optimizing or over-optimizing. I tried so many things: borrowing elements from the headings of top results, counting the number of occurrences of a keyword, internal linking... I also always take the Yoast SEO under the wordpress seriously - I make sure to have a Good score on both SEO and readability. I badly need to learn, but "having a feel" for whether or not the article has good SEO or not is not my strong suit.
I believe with Rank Tracker I can gauge where I went wrong on my published article. BUT, my supervisor does not allow me to publish the articles yet. I am so screwed. Please suggest apps other than Yoast, since it doesn't really work for me.