Surfer solves a narrow problem well: telling a writer what a competitive page needs to contain before they publish it. Its Content Editor analyses the current top results and produces a live score as you write — terms to include, heading structure, word count range. For content teams briefing freelancers, that turns an abstract instruction into something checkable.
In practice it is a workflow tool as much as an SEO one. Briefs generate in seconds rather than an hour of manual SERP analysis, writers get an unambiguous target, and editors get an objective first-pass check. Teams publishing at volume report the biggest gains — the value scales with how many people write and how little SEO they know.
The danger is treating the score as the goal. Optimising to 95 produces text that hits every term and reads like it was assembled by a machine, and Google is not scoring your page against Surfer's model. Our reviewers who use it as a checklist and then write like humans are happy; those who write to the number produce content that ranks briefly and converts badly. It is also not a research or technical tool, so it never replaces Ahrefs or Semrush.
Our guidance: worthwhile if you publish regularly and brief writers who are not SEOs. Unnecessary if you publish occasionally or your writers already understand search intent.