SEODevil vs Semrush Site Audit

Semrush is a marketing suite covering SEO, content, ads and social, with Site Audit as one of its tools. SEODevil is a focused tool for finding and fixing technical SEO issues.

The short answer

If you want one subscription for keyword research, competitor analysis, content and technical SEO, Semrush covers far more ground. If you want technical issues explained, fixed and applied to your site without paying for a full marketing suite, SEODevil is the simpler and cheaper choice.

Side-by-side comparison

FeatureSEODevilSemrush
TypeWeb app, nothing to installWeb app (marketing suite)
Free versionYes, no card neededYes: 1 demo project, 10 reports a day
Paid priceFree; Pro $29/month; Agency $99/monthFrom $139/month for the SEO plan
Crawl scopeOne page per audit; monitoring covers up to 25 URLs on paid plansWhole site, with page limits set by plan
JavaScript renderingYes, renders with headless Chrome when a page needs itYes (depends on plan)
Prioritized action planEvery issue scored by severity and turned into a task listSite Health score with errors, warnings and notices
Fix code for each issueAI writes the fix for each issue, ready to paste (5 free, unlimited on paid)Explanations of how to fix each issue type
Apply fixes to your siteWrites title, meta description and image alt text to WordPress, or opens a GitHub pull request (Pro)No
Ongoing monitoringHomepage daily on Free; 25 URLs hourly on paid, with email and Slack alertsScheduled re-crawls with email reports
AI search visibilityTracks your prompts in Claude with web search, weeklyAI Visibility Toolkit tracks ChatGPT, Google AI, Gemini and Perplexity (separate subscription)
Backlinks and keyword researchNoYes

Semrush details are from its website in October 2026. Prices and features change, so check their site for the latest.

Where Semrush is stronger

  • Keyword research, backlinks, competitor traffic, rank tracking, content and PPC tools in one place.
  • Site Audit crawls the whole site and groups issues across thousands of pages.
  • AI visibility tracking across several AI assistants, where SEODevil currently tracks Claude with web search.
  • Many integrations, including Looker Studio and Google Analytics.

Where SEODevil is stronger

  • A free plan with full audits and no daily report limit to work around.
  • Applies fixes to WordPress or opens GitHub pull requests, then re-checks the live page and can revert in one click.
  • Fix code written for your specific page, not a general how-to.
  • Shows the before-and-after effect of each fix with Search Console data.
  • Paid plans from $29 a month, with AI crawler checks included.

Which one should you choose?

Choose Semrush if you run SEO and content marketing together and will use its research and competitor tools every week.

Choose SEODevil if your main job is keeping your site technically healthy and you want the fixes done, not just listed.

Try SEODevil on your own site

The free plan runs full audits with no card needed.

Start free audit

Frequently asked questions

Is SEODevil a Semrush alternative?

For technical site audits, yes. For keyword research, backlinks or competitor analysis, no: SEODevil doesn't have that data.

Can Semrush fix SEO issues automatically?

Semrush Site Audit explains how to fix each issue type, but you or your developer make the change. SEODevil can write title, meta description and image alt text fixes to WordPress, or open a GitHub pull request with the change.

Which AI assistants does SEODevil track?

SEODevil runs your tracked prompts through Claude with live web search and records whether your site is mentioned or cited. It also checks whether ChatGPT, Claude, Perplexity and other AI crawlers can reach your site at all.

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