Surfer SEO and Frase both have strong content editors, but Surfer’s content editor is truly the selling point of this SEO tool. There’s nothing quite like it, which makes it one of a kind.
Both tools give you a score out of 100. With Surfer, anything over 60 is considered a solid score. There are so many good things to say about Surfer’s content editor. It’s laid out exceptionally well, and you can hook it up to Google Docs, which makes it much easier to write your content and keep up with the keywords.
When you’ve entered a main keyword in the Surfer SEO editor, it turns green and notifies you how many times you should use the keyword. Your score will also increase the more NLP terms you use from the keywords list. The only drawback I’d bring up is that Surfer can often display irrelevant keyword suggestions.
Frase is a very similar optimization tool when it comes to editing content. The most glaring issue here is that it provides a much lower keyword density and suggested terms compared to Surfer SEO. A lower density can make it easier to include them all in your content, but it doesn’t give you as much leverage to rank higher as Surfer.
Final thoughts: I would be lying if I said that Surfer’s content editor wasn’t the clear winner in this category. It works much better than the content optimization tool that Frase offers.