HONEST ALTERNATIVE · SEO + AI VISIBILITY
SimilarWeb is a competitive traffic intelligence platform — it estimates traffic volumes, keyword rankings, traffic sources, and audience demographics for any website, enabling competitive benchmarking and market research. DeepSEOAnalysis does a different job: it audits your own site's technical health, AI visibility, Core Web Vitals, and structured data — diagnosing what's preventing your pages from ranking rather than measuring how much traffic competitors receive.
At a glance
The useful answer is not “which tool is best?” It is which tool fits the job you need done this week.
| Criterion | Competitor | DeepSEOAnalysis |
|---|---|---|
| Free access | SimilarWeb offers a free tier with limited data — typically showing top keywords and traffic estimates with restricted historical depth and page-count visibility. Full functionality (detailed traffic breakdown, keyword gap analysis, audience data, extended history) requires a paid subscription. Pricing is not publicly listed for enterprise tiers; individual plans start at several hundred dollars per month. | Complete site audit is free with no signup, no email gate, and no trial expiry. All check results, severities, and fixes are visible on every crawl. |
| Primary purpose | SimilarWeb is a competitive intelligence and traffic analytics platform: it estimates traffic volumes and sources for any website, shows keyword rankings and traffic share, reveals audience demographics and interests, and enables market share analysis across industries. Its data is estimated (modelled from ISP data, browser extensions, and other panels) rather than from actual site analytics. It answers "how much traffic does competitor.com get and where from?" | DeepSEOAnalysis audits your own site's technical health: 80+ checks covering metadata, structured data, internal links, Core Web Vitals, and AI visibility — answering "what is wrong with my site and how do I fix it?" These are different jobs; both are useful at different stages of SEO work. |
| AI visibility / GEO | SimilarWeb focuses on traditional traffic analytics and competitive intelligence. It does not include a GEO (Generative Engine Optimisation) score and does not check llms.txt, AI crawler access, FAQPage/HowTo schema eligibility, question-heading ratio, or content chunkability as signals for AI Overview and LLM citation visibility. | GEO score covers all five AI visibility signals: AI crawler access in robots.txt, llms.txt presence and completeness, FAQPage/HowTo structured data, question-heading ratio (≥20%), and content chunkability (avg section ≤400w). |
| Data source | SimilarWeb's traffic data is modelled and estimated — derived from a panel of users, ISP partnerships, clickstream data, and proprietary algorithms. It provides directionally useful competitive benchmarks but should not be used as a precise measurement of a site's actual traffic. For your own site's traffic, Google Analytics or direct server logs are authoritative. | DeepSEOAnalysis uses real Google CrUX field data (actual Chrome users, 28-day rolling window) for Core Web Vitals — not lab simulations or estimates. Technical audit data is gathered from live crawl, not modelled. For traffic data on your own site, connect Google Search Console. |
| Core Web Vitals | SimilarWeb's primary focus is traffic intelligence, not technical SEO health or Core Web Vitals. It does not check LCP, INP, or CLS against Google's Good/Needs Improvement/Poor thresholds using real field data. | Real Google CrUX field data for LCP, INP, and CLS — actual Chrome user measurements in a 28-day window. Pass/fail against the thresholds Google's ranking system uses. |
| Competitive research | SimilarWeb is best-in-class for competitive research: traffic estimates, keyword gap analysis (which keywords competitors rank for that you don't), traffic source breakdown (organic vs paid vs direct vs referral), audience overlap, and market share trends over time. This type of competitive intelligence is entirely outside the scope of a technical site audit. | DeepSEOAnalysis does not provide competitive traffic estimates or keyword gap data for competitor sites. Use SimilarWeb or Ahrefs/Semrush for competitive intelligence; use DeepSEOAnalysis to audit the technical quality of your own pages once you've identified the targets. |
| Best fit | Marketers, strategy teams, and investors who need competitive traffic intelligence: benchmarking your site against competitors, market size estimation, audience research, and share-of-voice tracking across an industry. | Developers, in-house SEO teams, agencies, and founders who need a complete ungated technical and AI-visibility audit — diagnosing and fixing their own site's SEO issues, with real CrUX field data, structured data validation, and a shareable URL. |
What each product is
SimilarWeb is best for competitive research: understanding how much traffic competitors get, which keywords they rank for, which channels they dominate, and how your market share compares — all from outside the target site.
DeepSEOAnalysis is best for own-site audit depth: 80+ technical and AI-visibility checks, real CrUX field data, CMS-specific fix instructions, and a shareable report URL — permanently free with no account required.
Choose SimilarWeb
Choose DeepSEOAnalysis
Pricing comparison
FAQ
SimilarWeb traffic data is modelled — estimated from a panel of users, ISP data, browser extensions, and proprietary algorithms — not measured directly from site analytics. It's directionally useful for competitive benchmarking and identifying relative traffic differences between sites, but individual traffic figures can be significantly off (sometimes by 2–5× or more) for smaller sites. For your own site's traffic, Google Analytics is authoritative. For organic traffic specifically, Google Search Console provides exact click data directly from Google.
Yes — keyword intelligence is one of SimilarWeb's core features. It shows estimated organic keyword rankings and traffic share for any site, enabling keyword gap analysis (which keywords are sending traffic to competitors but not to you). The data is estimated rather than authoritative, and typically has better accuracy for larger sites with more traffic. For precise keyword data, Ahrefs or Semrush have larger crawled keyword databases.
No. SimilarWeb shows estimated traffic from the outside — useful for competitive research. Google Analytics shows your actual users, sessions, conversion rates, and engagement metrics from inside your own site. They answer different questions: SimilarWeb answers "how does my site compare to competitors?"; Google Analytics answers "what are my actual users doing on my site?" Both are typically used together.
Use SimilarWeb to identify which competitors are getting traffic for your target keywords and which traffic channels they're winning (paid vs organic vs direct). Use DeepSEOAnalysis to audit the technical health of your own pages — finding the structural issues that are suppressing your organic performance relative to those competitors. The research phase (SimilarWeb) informs the audit phase (DeepSEOAnalysis): once you know which keywords and competitors to prioritise, audit whether your pages are technically capable of ranking for them.
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