Similarweb vs Semrush

Side-by-side comparison of pricing, features, and trade-offs. Independent editorial review by Louis Corneloup. Last updated 2026-05-28.

Similarweb

Read full Similarweb review →

Semrush

Read full Semrush review →

Try Similarweb → Try Semrush →

What each tool does

Similarweb: Similarweb is the digital intelligence platform that tracks website traffic, app usage, search behavior, and digital market trends globally. The company went public in 2021 and serves over 4,500 enterprise customers including Google, Walmart, Adidas, and most major financial services firms. The data covers billions of monthly visits across millions of websites.

Semrush: All-in-one marketing platform for SEO, content marketing, competitor research, PPC, and social media. Track keywords, run site audits, analyze backlinks, and now monitor AI search visibility across ChatGPT and Perplexity.

	Similarweb	Semrush
Pricing model	Contact for pricing	Subscription
Starting price	—	Subscription $129.95/mo (Pro), $249.95/mo (Guru), $499.95/mo (Business)
Free tier	No	No
Category	seo	seo
Best for	Similarweb is a business tool available at account	All-in-one marketing platform for SEO, content marketing, competitor research, PPC, and social media
Top strength	Breadth of data : web traffic, apps, keywords, audience overlap in one platform.	See review
Main limitation	Expensive : enterprise pricing only.	See review
Full review	Similarweb review →	Semrush review →

Similarweb highlights

Pros

Breadth of data : web traffic, apps, keywords, audience overlap in one platform.
Competitive intelligence depth : broader than SEO tools for cross-channel analysis.
App data : mobile app intelligence globally.
Industry benchmarks : see how you compare to category averages.
Sales intelligence layer : web behavior as B2B sales signal.

Cons

Expensive : enterprise pricing only.
Traffic estimates are not exact : directional, varies by site size and country.
Smaller sites have higher uncertainty : data quality improves with scale.
Long sales cycles : weeks from interest to contract.
Less depth than Ahrefs for SEO research specifically .

Semrush highlights

Which should you pick?

Choose Similarweb if breadth of data : web traffic, apps, keywords, audience overlap in one platform..

Choose Semrush if its strengths match your priorities.

Still unsure? Read the deep-dive reviews: Similarweb and Semrush.

Frequently asked questions

Is Similarweb better than Semrush?

Neither tool is universally better. Similarweb excels at breadth of data : web traffic, apps, keywords, audience overlap in one platform., while Semrush is stronger on its specific strengths. The right pick depends on which gaps matter more for your workflow.

Which is cheaper, Similarweb or Semrush?

Pricing varies by tier — check the linked product pages above for current rates.

Can Similarweb replace Semrush?

For most use cases in the same category, yes — but feature parity varies. Similarweb's main gap: expensive : enterprise pricing only..

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