You mean the plug ins for WP sites?
I would say yes!
Just making sure, I was going to be surprised that Yoast made actual SEO Software for ranking, etc. I have used Yoast as an SEO plug in, works great from what I have used it for. The free version is good enough for really all your needs from meta data, content keyword checking, etc.
Schema is marked-up (noted) data that stands out in search engine results i.e. no. reviews, review aggregate, address, phone, landing pages etc.Yes I talking about the plug-in also could someone explain what "schema" means thanks