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Software · head to head

Moz vs SimilarWeb

Moz logo

Moz

Software

SEO software for smarter marketing

From
Free
Rated
-
Full reviewWebsite
S

SimilarWeb

Software

Website traffic and competitive analysis

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Moz smaller keyword database with only 500M+ keywords compared to 25 billion for Semrush; SimilarWeb browser extension data accuracy is lower than full platform
  • They diverge on capability: Moz covers Keyword Explorer, SimilarWeb covers Traffic analytics.

Where they differ

Only the attributes on which Moz and SimilarWeb actually diverge.

Attributes where Moz and SimilarWeb differ
AttributeMozSimilarWeb
Pricing modelUnknownfreemium
PlatformsWebWeb, Browser Extension
Founded20042007

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Moz

  • Keyword Explorer
  • Link Explorer
  • Site Crawl
  • Rank Tracking
  • Page Optimization
  • Competitive research
  • Local SEO tools
  • Fresh Web Explorer

Only in SimilarWeb

  • Traffic analytics
  • Audience insights
  • Competitor research
  • Industry analysis
  • Chrome support
  • Firefox support
  • Edge support

What people use each for

The jobs each tool is most often brought in to do.

Moz

  • SEO auditsnot SimilarWeb
  • Keyword researchnot SimilarWeb
  • Link buildingnot SimilarWeb
  • Local SEOnot SimilarWeb
  • Competitive analysisnot SimilarWeb

SimilarWeb

No use cases recorded yet. See the SimilarWeb review.

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Moz

  • Smaller keyword database with only 500M+ keywords compared to 25 billion for Semrush
  • Unreliable competitive analysis for B2B companies with niche competitor sets
  • Weekly rank tracking on lower plans creates bottlenecks versus daily updates on competitors

SimilarWeb

  • Browser extension data accuracy is lower than full platform
  • Full platform pricing is not transparent and requires quote-based inquiry

Pricing, plan by plan

Moz

Free
  • Starter$39/month
    • Limited keyword tracking
    • Basic site audit
  • Standard$99/month
    • Enhanced keyword tracking
    • Competitive analysis

SimilarWeb

Free
  • FreeFree
    • Traffic overview
    • Engagement metrics
    • Similar sites

Which should you pick?

Choose Moz if

  • You need keyword explorer.
  • You want to start without paying.
  • You also want link explorer.
Moz review

Choose SimilarWeb if

  • You need traffic analytics.
  • You want to start without paying.
  • You work on Web, Browser Extension.
  • You also want audience insights.
SimilarWeb review

Questions people ask

Is Moz or SimilarWeb better?
Neither clearly leads. Moz starts at Free and SimilarWeb at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Moz or SimilarWeb?
Moz starts at Free and SimilarWeb at Free.
Does Moz or SimilarWeb run on more platforms?
Moz runs on Web. SimilarWeb runs on Web, Browser Extension.
Can I use Moz for free?
Both have a free tier, so you can try either at no cost before committing.
What is Moz best used for?
Moz is most often used for seo audits, keyword research, link building, local seo. Of those, seo audits and keyword research are not what SimilarWeb is typically brought in for.
What can Moz do that SimilarWeb cannot?
Moz covers Keyword Explorer, Link Explorer, Site Crawl, Rank Tracking. SimilarWeb covers Traffic analytics, Audience insights, Competitor research, Industry analysis.

Answered from the vendors’ own pages

Moz: What are Moz's main weaknesses compared to Semrush and Ahrefs?

Moz has a smaller keyword database (500M+ keywords vs Semrush's 25B), weaker competitive analysis tools for B2B niches, weekly rank tracking on lower plans, and limited local SEO features compared to modern competitors.

Source
SimilarWeb: Is the SimilarWeb browser extension free?

Yes. The SimilarWeb browser extension is completely free to install and use with no paid tiers and no credit card required.

Source
SimilarWeb: How many websites does SimilarWeb cover?

SimilarWeb provides access to intelligence from 1B+ websites and 8M apps, tracks 5B search terms and 250M display ads across 190 countries and 210 industries.

Source
SimilarWeb: How accurate is SimilarWeb extension data?

Browser extension data accuracy is lower than the full platform, but it is adequate for ballpark figures of traffic estimates.

Source
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