Rank Math is the free SEO plugin that has won over a lot of people who used to run Yoast. It covers the same ground — on-page SEO checks, readability, sitemaps, title and meta controls — and it adds a few things that other free plugins charge for. The setup wizard is the first thing you notice: it asks a few questions about your site, imports your settings from Yoast or All in One SEO if you are switching, and sets up the basics in a few minutes. Each post gets an SEO score out of 100, with a list of checks that are passing and failing, and you can target up to five focus keywords per post in the free version. It also adds schema markup automatically for articles, products and local businesses, and it includes a 404 monitor and a redirect manager. The interface is clean and it does not nag you much. If you want a capable free SEO plugin and you like the idea of scoring your posts as you write, Rank Math is worth trying.