Similarweb Competitors: Similarweb Alternatives, 11 Tools Ordered by Coverage and Demand

By Jan Suski. I go deep on every review, checking every number against its source and digging up details other coverage misses, a habit from six years of SEO and link building for tech companies. Bylines at Brand24 and Senuto. How the scoring works.

Published 9 November 2026

Similarweb sells web traffic, keyword, AI search, ad and app data from one dataset, and its self-serve tiers run $125 to $542 a month on annual billing. Vendr's median Similarweb contract is $37,826 a year across 158 purchases. The 11 Similarweb alternatives below cover one or more of those six jobs for less, for more, or with measured data in place of estimates.

The page is for marketing, SEO and strategy teams holding a renewal quote or a first proposal. Each entry gives the one difference that decides the switch, a price you can check on the vendor's own pricing pages, and a link to the page on this site that argues it in full.

Similarweb bundles six functions in one contract: website traffic and engagement, keyword and search intelligence, AI search visibility, ad intelligence, app intelligence, and audience and market research. The list comes from Similarweb's Web Intelligence packages page and its product menu, rendered on 8 November 2026. Every entry below carries the same six bars. The bars map what each tool sells and focuses on. They don't rate quality.

Four tools with a published price that report traffic figures, from $0 to $289 a month

Each Similarweb alternative in this group puts a traffic number on screen and publishes what it costs. Two of them, Semrush and Ahrefs, sell competitors' traffic as an add-on to a digital marketing suite. Google Analytics measures your own site for $0, and SpyFu models a rival's search traffic from 10+ years of rankings and Google Ads bids.

01Semrush

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Semrush Traffic Analytics, part of the $289 Traffic & Market add-on: channel split for two domains.

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Two Semrush subscriptions against one Similarweb tier, from both vendors’ pricing pages.

Semrush bundles over 55 tools under one login and sells competitor traffic as a second subscription. Traffic & Market Pro costs $289 a month for one seat, and it sits outside the $139 SEO plan, so traffic plus keyword research starts at $428 a month, with 500 keywords tracked daily. Similarweb's matching self-serve tier, Competitive Intel & SEO & AEO, costs $399 monthly or $333 on annual billing.

The two vendors land within $29 of each other on list price, close but no cigar for anyone hoping Semrush halves the bill.

Semrush's traffic numbers come from clickstream. Its help article on turning traffic data into traffic intelligence says the estimates are built from the behavior of over 200 million internet users, delivered by third-party providers every one or two days and cleaned by a machine learning model. Its keyword research side is the deeper one: 28 billion keywords across 142 regional databases, against the 5 billion search terms Similarweb lists on its data page.

Contract data puts Semrush at about a third of Similarweb's cost. Vendr's median is $11,999 a year across 63 purchases, 0.32 times Similarweb's $37,826, and SpendHound's SMB average is $5,968 across 341 customers. The Semrush pricing breakdown has every tier. Ownership changed this year: Adobe closed its $1.9 billion purchase on 28 April 2026, per our Adobe-Semrush acquisition report.

As a Similarweb alternative it fits SEO professionals and digital marketers who want competitors' traffic as one view inside a tool they already open daily. A team that buys both suites to kill two birds with one stone pays twice for overlapping keyword research.

One Trustpilot reviewer, phan tuan anh, wrote on 25 October 2026 that "Semrush immediately charged my card $318 without making the immediate payment clear to me."

Full Semrush vs Similarweb breakdown →

02Ahrefs

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Ahrefs Traffic analytics on this site’s own domain; the trend chart sits behind the Traffic add-on.

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The dashed tier carries a Soon label on ahrefs.com/pricing.

Ahrefs now sells a competitor traffic view of its own. The Traffic reports add-on costs $99 a month and estimates total traffic for any domain with a 10+ channel split, AI referrals included. A Traffic & Market tier at $299 a month adds market share by category and API access, and on 8 November 2026 it still carried a Soon label, so nothing about its contents is set in stone. Lite plus Traffic reports costs $228 a month.

The Ahrefs Site Explorer is where its depth shows. The index behind it holds 35 trillion external backlink records and 287 million domains after vetting, refreshed by a crawler that visits 5 million pages a minute. Keyword data runs to 29 billion filtered keywords in 217 locations, nearly six times Similarweb's stated 5 billion search terms.

Vendr tracks a median Ahrefs contract of $21,980 a year across 58 deals, 0.58 times Similarweb's median, inside a tight $19,980 to $23,980 range. SpendHound's SMB average sits far lower, at $3,851 across 147 customers, because most of them buy a single self-serve seat. The Ahrefs pricing report breaks out credits and seats.

It fits SEO professionals whose work is links, keyword opportunities and organic traffic, and who need competitors' traffic only now and then. Read between the lines of the pricing page: with no trial and no refunds, the first month is the test.

A G2 reviewer working as an SEO specialist wrote on 28 September 2026: "I especially like its backlink analysis, site audit, and detailed SEO performance insights."

Where Ahrefs ranks →

03Google Analytics

Google Analytics counts visits to your own site from a tag, so its numbers are measured where every other tool here estimates. Semrush's own help center says its traffic data and Google Analytics "are not interchangeable". GA4 costs $0 and shows no competitor at all. It's the free alternative to Similarweb for one site only, which is why it replaces none of Similarweb's competitive intelligence.

The free tier has hard limits. Standard properties keep event data for 2 or 14 months, explorations sample above 10 million events per query, and the daily BigQuery export stops at 1 million events. Analytics 360 lifts retention to 50 months and explorations to 1 billion events, at a price Google quotes through its Marketing Platform sales team.

Google Analytics is the analytics tool most sites already run. Pair it with Google Search Console and a team gets real data on its own site's traffic sources and search traffic for $0. Search Console reports clicks, impressions and average position by query, the organic search traffic view Similarweb models from outside. Our Google Analytics vs Hotjar comparison covers the other half of on-site analytics.

It fits any team that wants a ground truth for its own site before it pays for estimates of anyone else's. That ground truth is the yardstick for every test later on this page.

Where Google Analytics ranks →

04SpyFu

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SpyFu’s pricing page: the history line carries an x on Basic and a tick on the two plans above it.

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History depth by tier, from SpyFu’s and Similarweb’s pricing pages.

SpyFu keeps 10+ years of historical data on every keyword a domain has ranked for or bid on in Google Ads, from Pro + AI at $119 a month after a $59 first month. Basic costs $39 a month, or $29 billed annually, and its pricing page marks that history as excluded from Basic.

Similarweb's Competitive Intelligence tier keeps 3 months of history, and its ad intelligence starts in the $649-a-month package.

The tool started in April 2005 as GoogSpy, built on web-scraping code its founder Mike Roberts had written at his consulting firm. That origin still shapes it: SpyFu estimates traffic from ranking positions and ad bids, and it doesn't report direct, referral or social channels. Basic caps search results and exports at 10,000 rows; Pro + AI at $119 a month removes the cap.

A year of Basic costs $348, 0.009 times Similarweb's Vendr median, a drop in the bucket next to a $37,826 contract. Team / Agency runs $249 a month with five users, and every plan carries a 30-day money-back guarantee that needs no form. The SpyFu pricing report tracks the plan changes, including the new Site Audit, which crawls 50,000 pages a month on Basic.

As a cheap alternative to Similarweb's ad tier, it fits PPC managers and small agencies who answer the question "what are our competitors spending" for clients. Test it on your own domain first, and check its claims: the keyword database reads 13.1 billion on the homepage and 73 billion on its blog.

A Reddit user in r/PPC put the accuracy test plainly: "SpyFu isn't very accurate. Put your own URL in there and check out what numbers it gives you and compare that to what you're actually spending."

Where SpyFu ranks →

Three tools that track search visibility, emerging trends or AI search visibility without estimating visits

None of these three Similarweb alternatives puts a visit count on a competitor's site. Sistrix scores ranking visibility, Exploding Topics scores search growth and Positive Surfer scores mentions inside AI answers. Each one replaces a single bar of Similarweb's six, at $39 to €119 a month. Next to Similarweb, a jack of all trades across six functions, each of these three does one job.

05Sistrix

Sistrix measures how often a domain ranks in Google. Its Visibility Index weights positions across a fixed set of 1 million keywords per country, and the German history starts on 25 February 2008. The index tracks share of Google results, a number that moves on the day of a core update, where Similarweb tracks visits. Agencies use it to date which update hit a client.

Prices are in euros only. Start costs €119 a month with 1 user and 3 months of history, Plus €239 with 3 users and 5 years, Professional €419 with the full 11-year archive. A year of Start runs €1,428, about 0.04 times Similarweb's median. Every self-serve plan cancels monthly, and the trial runs 14 days.

Coverage is strongest in Europe. Sistrix lists 52 countries, 13 of them updated daily on desktop and mobile, and its keyword database holds 450 million terms. Prices rose 20% to 33% in 2024, per this site's Sistrix review.

It's the Similarweb alternative for SEO teams in Germany, Austria and Switzerland, and agencies that report on Google updates. A team that needs traffic or revenue estimates is barking up the wrong tree here.

A Capterra reviewer, a digital strategist writing in June 2022, singled out its home markets: "I also appreciate the data base for the countries DE, AT and CH."

Where Sistrix ranks →

06Exploding Topics

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An Exploding Topics project: five-year growth and monthly volume per tracked topic.

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Entry tiers from both vendors’ pricing pages, 8 November 2026.

Exploding Topics tracks topics. Its database holds over 1.1 million trends scored by search volume growth, and the company says it flags them 12 or more months before mainstream coverage. Similarweb's market trends view starts from a list of domains. Exploding Topics works from rising searches on Google, Reddit and e-commerce listings, then has analysts cut one-week fads.

Every tier is public, and the early bird catches the worm here: the pitch is a topic found a year before rivals see it. Entrepreneur costs $39 a month for 100 tracked trends, Investor $99 adds trend forecasts and CSV export, and Business $249 adds 2,000 trends and reports. A year of Entrepreneur runs $468, 0.012 times Similarweb's median, and every plan opens with a 7-day trial that converts on its own.

Semrush owns it, which puts it inside Adobe since April 2026. Google Trends covers the free end of the same job with a relative 0 to 100 interest score, useful for a keyword you already have. Exploding Topics surfaces keywords a team hasn't thought of yet, the point where emerging trends and content strategy meet. The trend research rankings compare it with six other trend tools.

It fits content marketers, founders and product teams looking for emerging trends and content gaps before they create content. Teams that want competitor traffic will find it a fish out of water.

Kristian Brandt wrote on Trustpilot in June 2025: "I signed up for a trial and then they charged me like a full pro subscription."

Where Exploding Topics ranks →

07Positive Surfer

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Surfer’s AI visibility overview: a score per brand, prompt list and cited sources.

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Whole package price divided by prompts, annual billing on both.

Positive Surfer tracks AI search visibility at a lower price per prompt. Its AI Search Analytics plan costs $82 a month billed yearly for 50 prompts refreshed daily across ChatGPT, Perplexity, Gemini, Google AI Overviews and AI Mode. Similarweb's AEO tracking starts in its $333-a-month annual package with 150 prompts. Counting each whole package price against its prompts, that works out to $1.64 per prompt a month on Surfer against $2.22 on Similarweb.

The metrics are prompt-level: a visibility score, mention rate and average position, plus a Mention Gap report listing the citations each engine makes and where competitors get cited. Similarweb's Gen AI Intel suite adds AI traffic trends from its panel, a number Surfer doesn't estimate. Surfer has no traffic estimates for any outside site; its content audit connects to Google Search Console for your own pages.

Plans run from Discovery at $49 a month billed yearly, with 1 seat and 120 documents, to Peace of Mind at $299 with 10 seats and 100 daily prompts. A year of AI Search Analytics costs $984, 0.026 times Similarweb's median. Standard at $99 adds 3 seats, enough to iron out the details of a content plan between an editor and a writer. The Positive Surfer vs Semrush comparison covers the content side in full.

It fits content marketers and SEO professionals who write the pages AI engines cite and want AI search visibility tracked next to the editor where they write.

Try it yourself

Sign up for Positive Surfer

AI Search Analytics tracks 50 prompts a day across five AI engines for $82 a month billed yearly.

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Where Positive Surfer ranks →

Two panel and clickstream vendors sold by quote, for audience research and raw traffic data

Comscore and Datos, the two quote-only Similarweb alternatives here, collect behaviour from panels of people and sell it under contract. Neither publishes a price. Comscore sells finished audience numbers to media buyers, and Datos sells the raw feed to teams that build their own dashboards.

08Comscore

Comscore sells audience measurement that advertisers and publishers trade on. Its MMX Multi-Platform product deduplicates one audience across desktops, smartphones and tablets, and Video Metrix adds connected TV. Comscore reports how many people a publisher reached, the figure a media plan is priced on, where Similarweb reports visits to a domain.

It's the most expensive tool on this page by tracked contracts. Vendr puts the median Comscore contract at $105,791 a year, with deals from $35,850 to $236,939 and no purchase count shown. That's 2.8 times Similarweb's median, enough to cost an arm and a leg for a team that only wanted traffic estimates, and Vendr says multi-year terms commonly cut the annual rate by 15% to 25%.

Its key features run to eight digital lines: MMX, Video Metrix, Total Digital, Plan Metrix for audience research, Mobile Metrix for apps, Ad Metrix, Reach/Frequency and MobiLens Plus. None of them covers keyword research or SEO, and its product pages publish no panel size.

It fits agencies and publishers paying enterprise prices for a number both sides of a media deal accept, and it feeds media plans and marketing strategies across TV and digital. An SEO team after competitors' traffic gets no keyword research from Comscore at any tier.

Where Comscore ranks →

09Datos

Datos sells the raw material Similarweb turns into dashboards. Its feeds carry URL-level browsing from millions of opt-in panelists, and the company says it processes 20 billion-plus URLs a month across 185 countries. A buyer gets the click path, the referrer and the timestamp, then builds traffic analysis on top in its own warehouse.

The product list reads like a menu of Similarweb's inputs: an Activity Feed, a Cohort Activity Feed, Domain Traffic, a Keywords Feed, a Search Events Feed, and in-app and browser consumer behaviour data. Datos is a Semrush company, so since April 2026 it sits inside Adobe alongside Semrush and Exploding Topics. It has stayed under the radar with 3 G2 reviews against Semrush's thousands.

No price is published, Vendr and SpendHound don't track it, and fewer than three buyer-reported amounts exist in public, so this page plots no price for it. Datos offers a free data sample before a contract. G2 lists 3 reviews averaging 4.8, thin evidence for a six-figure decision.

It's a Similarweb alternative only for data teams and investors running due diligence who want the clickstream itself and have the engineers to model it. The clickstream data provider rankings compare it with Similarweb, Semrush and Comscore on panel size and delivery format.

Where Datos ranks →

Two narrower buys: a $129 SEO suite and an app-data vendor

SE Ranking and Sensor Tower are the narrowest Similarweb alternatives on the page, and each covers part of the bundle at opposite ends of the price range. SE Ranking publishes a $129 monthly entry plan. Sensor Tower's tracked median is $75,000 a year, twice Similarweb's.

10SE Ranking

SE Ranking bundles competitor research, rank tracking and AI visibility into one $129 plan. Core costs $129 a month or $103.20 on annual billing, with unlimited keyword, competitor and backlink research, 2,000 keywords tracked daily and 25 AI prompts a day across five engines. Similarweb's nearest package, with SEO and AEO, costs $399 monthly.

Its traffic figures are labelled "monthly clicks estimated with AI" on its competitive research page, and the method isn't published. The data behind them is sizable: 5.4 billion keywords in 188 geographic databases, 2.7 trillion backlinks across 420 million domains and 2.2 billion domain profiles. Competing lists still quote a $65 entry price, water under the bridge since the live page shows $129.

A year of Core on annual billing costs $1,238, 0.033 times Similarweb's median. Growth at $279 a month adds 5,000 keywords and three manager seats, and the SE Visible add-on starts at $71 for 75 AI prompts. Payments are non-refundable except where the service fails, so the 14-day trial, which needs no card, carries the test. Our rank tracker pricing report compares its tracking costs.

Among the best Similarweb alternatives on price, it fits small agencies and in-house SEO professionals who want affordable pricing on rank tracking with competitor data as a side view.

Megan Bright wrote on Trustpilot in August 2026: "I think you get just as much as you do with the more expensive tools, but for 1/3 of the price."

Where SE Ranking ranks →

11Sensor Tower

Sensor Tower is Similarweb's competitor for app data. Its App Performance Insights cover downloads, revenue, engagement, keyword rankings and reviews, and Advanced Usage Insights draw on what it calls a proprietary panel of millions of mobile users. It also sells Web Insights, with visits and unique visitors, so one contract covers web and app engagement for a publisher with an app and a site. Similarweb lists 4 million apps on its data page.

The price runs higher. Vendr tracks a $75,000 median across 40 purchases, from $29,500 to $115,460, which is 1.98 times Similarweb's. SpendHound's SMB average is $57,469 across 11 customers. Every subscription renews on its own unless notice lands 90 days before the new term, per the Sensor Tower pricing report.

Scale came by acquisition. Sensor Tower bought data.ai, formerly App Annie, on 18 March 2024, adding 1,400 clients, and reported more than 2,500 enterprise customers in May 2026. Its key features add Pathmatics, with social, video and display ad spend estimates, which makes it a mobile app intelligence and ad intelligence buy in one.

It fits app marketing and user acquisition teams whose competitors live in app stores. A web-first team would be paying for the lion's share of a contract it uses a fifth of.

One Hacker News user who asked data.ai for a quote in 2021 reported that "app annie quoted mid 5 digits per year".

Where each vendor's traffic data comes from

Every traffic number on this page comes from one of four sources: a device panel, third-party clickstream, a crawler reading search results, or a tag on your own site. Similarweb blends three. Its data methodology page lists a contributory network on millions of devices, direct measurement from millions of sites' first-party analytics, partner data from ISPs and measurement firms, and public web data, at 10 billion digital signals a day.

There's a method to the madness of four sources: each one sees a different slice of a site's visits. The method decides which traffic sources each tool can see. A crawler-based seo tool sees search traffic and nothing else, so direct, email and referral visits never appear. Panels see every channel but thin out on smaller sites, which is why Similarweb sets a 5,000-visit floor.

Only a tag measures your own site, and a tag gives more reliable data than any panel for the sites you control. For sites you don't control, every vendor here sells reliable data only in the sense of a modelled estimate, and Datos sells the closest thing to the raw input: clickstream for in-house traffic analysis.

Semrush's clickstream and Datos belong to the same company, Semrush, so two entries on this list draw on one corporate owner. That matters for a team that wants two independent reads on a rival's traffic: Semrush plus Datos is one source twice, which puts all your eggs in one basket.

What a Similarweb replacement has to cover, from traffic and competitive intelligence to audience insights

Similarweb's six functions map to six separate questions, and most teams ask two or three of them. The traffic intelligence question is how much traffic a competitor's site gets and from which traffic sources: direct, email, referral, social, organic search, paid search and display. Its key metrics are monthly visits, visit duration, pages per visit and bounce rate, per this site's Similarweb review.

Keyword and search intelligence covers search volume, keyword rankings and the content gaps between two domains, the work most SEO professionals do daily. Similarweb covers Google, Amazon and YouTube keyword markets under one login, per this site's review, which matters to large ecommerce sites. Ahrefs, Semrush, SE Ranking and SpyFu all sell it for $29 to $139 a month at entry, with key features that run deeper than Similarweb's 5 billion search terms.

AI search visibility counts how often a brand appears in ChatGPT, Gemini and Perplexity answers. Similarweb tracks 150 prompts in its $333 annual package, while Positive Surfer, Semrush and SE Ranking track 25 to 100 a day in theirs. Ad intelligence, the creatives and paid search spend behind a rival's campaigns, sits in Similarweb's $542 tier and in SpyFu's $39 plan.

App intelligence and audience research are where the enterprise tools take over. Sensor Tower and Comscore sell app usage, demographics and audience insights at Vendr medians of $75,000 and $105,791 a year. A market research team sizing a total addressable market or a serviceable available market from digital market size needs this layer, and the digital marketing tools above don't sell it.

So a replacement is usually two tools, and few teams need the whole nine yards. A common pair is an SEO suite for keyword data plus Google Analytics and Search Console for the team's own site, at $0 to $289 a month together. That pair loses Similarweb's market insights and market research across a whole category, the one function only the panel vendors replicate.

How to test traffic estimates before switching

Run a 30-day test of any Similarweb alternative before signing anything over $1,000 a year. The trial windows make it free or close to it: 7 days for Similarweb and Semrush's Traffic & Market, 14 days for SE Ranking and Sistrix, and a 30-day refund at SpyFu. Ahrefs has no trial, so budget one month of Lite plus Traffic reports, $228.

1. Pick 10 sites where you hold real Google Analytics data: your own, plus partners or clients who'll share a screenshot. Include at least 3 small businesses under 50,000 monthly visits and 1 site under 5,000.
2. Pull the same 3 months from each tool and from Google Analytics. Record total visits, the top three traffic channels, the source that sends the most traffic and the share from organic search.
3. Divide each tool's estimate by the measured number. The 86-site ACM study found Similarweb 19.4% low on visits, so a ratio near 0.8 is normal for it.
4. Check direction before size. A tool that gets month-over-month growth right on 8 of 10 sites is more useful for competitor analysis than one that's closer on totals but wrong on trend.
5. Compare keyword data last, against Google Search Console's clicks and impressions for your own site.

Write the ratios down before the sales call; a ratio is actionable data in a renewal negotiation. A vendor that misses your own site by 40% will miss a competitor's by a similar margin. Talk is cheap in a sales demo, and a written number is harder to argue with.

Pricing across the roster: what each Similarweb alternative costs

List prices start at $0 and Vendr medians top out at $105,791 a year. The market traffic cost of matching Similarweb's six functions depends on how many of them a team needs: one function costs $39 to $289 a month, all six cost enterprise prices.

Vendr's figures carry a "last updated February 2026" stamp, checked on 8 November 2026. SpendHound, updated 29 October 2026, reports lower averages because its sample leans to small companies: $13,602 for Similarweb's SMB buyers, $5,968 for Semrush and $3,851 for Ahrefs. The full Similarweb ladder, add-ons included, is in our Similarweb pricing report.

Paid plans start low at every vendor here, and matching Similarweb on that budget is easier said than done: its own $125 tier keeps 3 months of history with 1 user. A five-person team on its SEO and AEO tier pays $333 times five, or $19,980 a year, before an API or a second country pack.

Contract and renewal terms across the roster

Self-serve plans cancel at the end of the billing period at Similarweb, Semrush, Ahrefs, SpyFu, Sistrix, SE Ranking and Exploding Topics. The quoted vendors set terms in an order form. Sensor Tower's terms need notice 90 days before renewal, and Similarweb's business contracts follow whatever the signed agreement says.

Two complaints repeat across Trustpilot. Semrush's 1,423 reviews and Exploding Topics' 10 both cluster around trials that converted to charges, and a Similarweb reviewer reported on 23 September 2026 that a 7-day trial couldn't be cancelled after 3 days. A trial that can't be cancelled from the account page is a red flag. Set a calendar reminder on day 5 of any trial, and cancel through the account page so there's a record.

How these Similarweb alternatives were chosen

The 11 tools were picked by site coverage first and search demand second. Tools with a published review or a head-to-head page on this site come first, then tools ranked as an entry in one of our rankings, then tools mentioned elsewhere. Inside each group, the order follows US Google Ads volume for "Similarweb vs [tool]", pulled through DataForSEO for September 2026.

Demand alone would have produced a short list. Only five live tools carry measured pair searches, 480 a month in total, and Semrush holds 390 of them, 81%. Ahrefs has 40, Google Analytics and Comscore 20 each, SpyFu 10.

I filled the other six places by site coverage, so Sistrix, Exploding Topics, Positive Surfer, Datos, SE Ranking and Sensor Tower show Not measured in the router. Positive Surfer is here for its AI search visibility tracking, the job Similarweb sells as its Gen AI Intel suite.

Ubersuggest, Serpstat, Mangools and ChatSEO appear in competing lists of the best Similarweb alternatives. Those lists quote Ubersuggest at $29 a month; its own pricing page, loaded from Poland on 8 November 2026, sold lifetime licences from zł 1,050 for the Individual plan and showed no monthly price.

None of those four has a review or a ranked entry on this site, so each sits below the 11 by the coverage rule. Alexa and Hitwise are discontinued, and Contentsquare, BuiltWith, Crayon, Klue and Placer.ai do adjacent jobs; all seven are named in the sections above.

Questions buyers ask about Similarweb alternatives

What are the best Similarweb alternatives?

The best Similarweb alternatives depend on which of its six functions a team uses. For competitor traffic plus SEO, Semrush at $139 plus a $289 add-on; for links, Ahrefs from $129; for app data, Sensor Tower at a $75,000 median; for your own site, Google Analytics at $0.

Is Similarweb reliable?

Yes for trends on sites above 5,000 monthly visits, with wider gaps on exact totals. Similarweb shows no data below that floor, and a peer-reviewed study of 86 sites found its visits averaged 19.4% below measured analytics. Use it to compare competitors' traffic against each other, and give it the benefit of the doubt only after testing it on your own site.

Is Similarweb free?

Partly. The free plan on Similarweb.com is a high-level sample of traffic insights for any domain, and the Similarweb extension for Chrome is free. The full platform starts at $125 a month on annual billing or $199 monthly, with a 7-day trial.

Is Similarweb an Israeli company?

Yes by origin. Or Offer founded it in Tel Aviv in 2007, and it has traded on the NYSE as SMWB since May 2021, per our Similarweb review. In May 2026 its board opened a search for Offer's successor as CEO.

Which is better, Semrush or Similarweb?

Semrush is the better seo tool and Similarweb the better market research tool. Semrush holds 28 billion keywords and a 200-million-user clickstream sample. Similarweb adds app, ad and audience data, and Vendr puts its median contract at three times Semrush's. Our Semrush vs Similarweb comparison runs the full test.

Is Similarweb an SEO tool?

Partly. Its $333-a-month annual package adds keyword research, a rank tracker, a site audit and backlinks, but its core product is traffic and market data. SEO-first suites such as Ahrefs and Semrush hold 29 billion and 28 billion keywords against Similarweb's 5 billion search terms.

Who are Similarweb's main competitors?

By US search demand, the competitor that draws the most traffic from buyers is Semrush, with 390 "Similarweb vs" searches a month, then Ahrefs at 40, Google Analytics and Comscore at 20 each and SpyFu at 10. For app data the direct competitor is Sensor Tower, and for raw clickstream it's Datos.

Is there a free website like Similarweb, and which free tools come closest?

Google Search Console and GA4 are the free alternative to Similarweb for your own site, and both measure real data. For other sites, Similarweb's own free lookup and Semrush's free tier at 10 reports a day are the free tools, and each caps its competitor data. Ahrefs Free covers only sites you verify as the owner.

How does Similarweb track traffic?

It blends a panel of millions of devices, direct analytics connections from millions of sites, ISP and measurement partners, and public web data, then models the result. Similarweb says it collects 10 billion digital signals a day and analyses 2 TB of data daily.

What is the best competitor analysis tool for SEO?

For backlinks and organic traffic, the Ahrefs Site Explorer, built on 35 trillion backlink records. For SEO plus a competitor traffic view in one login, Semrush with its $289 Traffic & Market add-on. Our competitive intelligence tools for SEO ranking scores 10 of them.