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Marketing · head to head

Fathom Analytics vs SimilarWeb

Fathom Analytics logo

Fathom Analytics

Marketing

Website analytics made simple

From
$14/month
Rated
-
Full reviewWebsite
SimilarWeb logo

SimilarWeb

Browser Extensions

Website traffic and competitive analysis

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only SimilarWeb has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fathom Analytics there is no free tier, only a 7 day trial; SimilarWeb browser extension data accuracy is lower than full platform
  • They diverge on capability: Fathom Analytics covers Page view tracking, SimilarWeb covers Traffic analytics.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Fathom Analytics and SimilarWeb actually diverge.

Attributes where Fathom Analytics and SimilarWeb differ
AttributeFathom AnalyticsSimilarWeb
Starting price$14/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsWebWeb, Browser Extension
CategoryMarketingBrowser Extensions
Founded20142007

Identical on both: user rating (Not yet rated).

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 Fathom Analytics

  • Page view tracking
  • Goal tracking
  • Real-time analytics
  • Referrer tracking
  • Privacy-focused
  • GDPR compliant
  • Cloud deployment
  • Web support

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.

Fathom Analytics

  • Privacy-focused web analytics without cookie bannersnot SimilarWeb
  • A lightweight Google Analytics replacementnot SimilarWeb
  • Tracking many sites from one accountnot SimilarWeb
  • Long-term historical reporting while subscribednot SimilarWeb

SimilarWeb

  • Analyzing competitor advertising across display, search, socialnot Fathom Analytics
  • Understanding traffic loss to search and AI recommendationsnot Fathom Analytics
  • Tracking brand visibility across ChatGPT and AI chatbotsnot Fathom Analytics
  • Optimizing Amazon product placement with marketplace analyticsnot Fathom Analytics
  • Identifying high-intent prospects at optimal buying momentsnot Fathom Analytics

Where each one falls short

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

Fathom Analytics

  • There is no free tier, only a 7 day trial
  • Priced on pageviews, from $45 a month at the 500,000 pageview level
  • Custom events count against the pageview allowance rather than being tracked separately
  • Site allowances come in packs, with additional 50-site packs at $10 a month
  • Data is retained forever only while the subscription is active

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

Fathom Analytics

$14/month
  • Starter$14/month
    • Unlimited page views
    • 1 site
    • Real-time analytics

SimilarWeb

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

Which should you pick?

Choose Fathom Analytics if

  • You need page view tracking.
  • You also want goal tracking.
Fathom Analytics 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 Fathom Analytics or SimilarWeb better?
Neither clearly leads. Fathom Analytics starts at $14/month and SimilarWeb at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fathom Analytics or SimilarWeb?
SimilarWeb has a free tier; the other does not. Paid plans start at $14/month for Fathom Analytics and Free for SimilarWeb.
Does Fathom Analytics or SimilarWeb run on more platforms?
Fathom Analytics runs on Web. SimilarWeb runs on Web, Browser Extension.
Can I use SimilarWeb for free?
Yes. SimilarWeb has a free tier, so you can try it without paying. Fathom Analytics starts at $14/month.
What is Fathom Analytics best used for?
Fathom Analytics is most often used for privacy-focused web analytics without cookie banners, a lightweight google analytics replacement, tracking many sites from one account, long-term historical reporting while subscribed. Of those, privacy-focused web analytics without cookie banners and a lightweight google analytics replacement are not what SimilarWeb is typically brought in for.
What can Fathom Analytics do that SimilarWeb cannot?
Fathom Analytics covers Page view tracking, Goal tracking, Real-time analytics, Referrer tracking. SimilarWeb covers Traffic analytics, Audience insights, Competitor research, Industry analysis.

Answered from the vendors’ own pages

Fathom Analytics: How much does Fathom Analytics cost?

Fathom's entry-level plan costs $45/month for up to 500,000 pageviews. Higher volume tiers exist (1M, 2M, 10M, 25M+ pageviews) with custom pricing. Yearly billing provides 2 months free.

Source
SimilarWeb: How much does Similarweb cost?

Similarweb does not publish pricing. Custom packages are available for businesses and enterprises. Self-service options are available for entrepreneurs and small teams. Customers must start a free trial or contact sales to receive a quote.

Source
Fathom Analytics: Is there a free trial for Fathom Analytics?

Yes, Fathom offers a 7-day free trial. There is no free tier after the trial ends.

Source
SimilarWeb: Does Similarweb offer a free trial?

Yes. Similarweb offers free trials for its various products. Users can start a free trial through their registration page or contact support to switch between different product trials.

Source
Fathom Analytics: What happens if my pageviews exceed my plan limit?

Fathom handles usage overage graciously, only upgrading your plan after two consecutive months over your limit. There are no immediate overage charges.

Source
SimilarWeb: What products does Similarweb offer?

Similarweb offers the Competitive Intelligence Suite, Strategic SEO Suite, Ads Intelligence Suite, Gen AI Intelligence Suite, AI Studio with natural language queries, custom data feeds, API access, and managed services with custom dashboards.

Source
Fathom Analytics: Can I add extra sites to my Fathom plan?

Yes, extra sites cost $10/month per 50-site pack, or $100/year (which includes two months free). All plans include a minimum of 50 included sites.

Source
Fathom Analytics: Can I cancel Fathom without a long contract?

Yes, there are no contracts and cancellation is flexible. Fathom does not lock customers into agreements.

Source
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