This topic worths reading. Even I usually apply the same ratio of keyword density that is either 2/100 or 3/100 but I have never used any tool to check the density as prefer to check it manually. But now I would surely try these suggested tools.

Interesting one! Keep sharing!

Do be careful using a thesaurus if writing in a language that is not your native language. Fastest way to clue people in that you’re writing for search engines, not human beings, is to use the wrong words plucked from a Thesaurus. PEOPLE won’t be back for more. Ever. (Article spinners are hilariously bad at this.)

While it may not land you on Page ONE of Google right off the bat, if you consistently write helpful, correct information on a topic, such that you are among the most trusted resources for it, and you choose keywords based on the question: “If I were searching for this information, what would I type into the Google search box?” you should do well with your blog. But what do I know. I still haven’t become a millionaire in my sleep.