Scribe SEO is a plug-in – not just for WordPress – that helps you optimise your posts for search engines.
It works by analysing the post and making suggestions on how to improve it, eg. by adding a link or making a keyword stronger.
To show it to you in action, I’ve recorded a short video of me using it:
Scribe SEO is not free but requires you to pay a monthly fee, however if you have purchased a StudioPress theme then you should have received a discount code for the advanced package. I use it on all of my sites now and it is a great help.