HONEST ALTERNATIVE · SEO + AI VISIBILITY
SISTRIX measures how visibly a domain appears across Google SERPs via its weekly Visibility Index — the industry benchmark for domain-level SEO performance tracking in European markets. DeepSEOAnalysis crawls the live server HTML Googlebot sees, validating structured data, detecting broken links and redirect chains, measuring real CrUX Core Web Vitals, and scoring AI visibility. These tools answer different questions: SISTRIX tracks visibility trends; DeepSEOAnalysis finds what's preventing better visibility.
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 |
|---|---|---|
| Core function | SISTRIX is a professional SEO suite built around its proprietary Visibility Index — a metric that measures how prominently a domain appears across a weighted sample of search queries in Google, updated weekly per country. The Visibility Index is the industry benchmark in German-speaking and broader European markets for tracking domain-level SEO performance over time, including the impact of Google algorithm updates and competitor movements. SISTRIX also includes: keyword research and SERP analysis, site audit (technical crawler), backlink data (via external data partnerships), and a Toolbox API for data export. It's a subscription SaaS platform with per-module pricing. | A standalone technical SEO audit tool: crawls any live website and runs 80+ checks across technical (crawlability, canonical, redirects, robots.txt), on-page (titles, descriptions, heading structure), structured data (JSON-LD validation in the server-rendered HTML), links (internal structure, orphan pages, broken links), performance (real CrUX field data), and AI visibility (GEO score) categories. Not a rank tracking or visibility index platform — purely an audit and monitoring layer focused on finding and fixing site-level technical SEO issues. |
| Visibility Index vs technical audit | SISTRIX's Visibility Index is its unique contribution to SEO analysis: a weekly domain-level metric that aggregates SERP position data across a market-weighted query sample (100,000+ queries per country), adjusted for estimated CTR by position and query volume. It's the most widely used benchmark in European SEO for measuring relative domain performance over time — tracking algorithm update impacts, identifying competitor SERP share growth, and measuring the effect of major site changes on aggregate organic visibility. The site audit module exists as a secondary feature — it performs a technical crawl but the core SISTRIX product is the visibility and rank tracking platform. | DeepSEOAnalysis focuses entirely on the technical audit layer — what's actually in the HTML Google crawls, whether it's correctly implemented, and whether it meets Google's quality thresholds. Where SISTRIX answers "how is this domain performing in aggregate across its rankings?", DeepSEOAnalysis answers "what specific technical, structural, and AI-visibility issues are preventing this site from ranking better, and what exactly should be changed and where?" These are complementary questions; the two tools address different phases of SEO work. |
| Core Web Vitals | SISTRIX includes performance data in its site audit module, but the performance metrics are from lab-environment testing (Lighthouse or similar) rather than real Google Chrome User Experience Report (CrUX) field data. Lab scores can differ significantly from real-user CrUX data — a page that scores well in a lab test can fail Google's Good threshold in real CrUX data because lab tests don't capture real device variability, network conditions, or the long-tail of user interactions. SISTRIX does not surface per-page CrUX data segmented by mobile/desktop against Google's exact Good/Needs Improvement/Poor thresholds. | Real Google CrUX field data for every crawled page — LCP, INP, and CLS from actual Chrome users, segmented by mobile and desktop, against Google's exact Good/Needs Improvement/Poor thresholds. This is the data Google uses for the Page Experience ranking signal. The audit identifies which specific pages are failing CrUX thresholds and provides CMS-specific optimisation guidance (plugin settings, code snippets, template fixes) for each metric. |
| Structured data validation | SISTRIX's site audit checks for structured data presence (whether JSON-LD blocks exist on pages) but doesn't perform deep validation of schema correctness against Google's Rich Results specifications — it won't catch a missing `aggregateRating.reviewCount`, an incorrect `availability` enum shorthand (`InStock` vs the required `https://schema.org/InStock`), or schema that's injected via JavaScript and therefore not present in the server HTTP response that Google's first-wave crawl reads. SISTRIX also doesn't validate the schema-to-visible-content consistency (e.g., whether the price in Product schema matches the price displayed on the page). | Validates every JSON-LD block in the raw server HTTP response against Google's Rich Results requirements: checks all required properties per schema type, validates enum URI formats, verifies data type formatting (price as string, not number; ISO 8601 dates), checks aggregateRating value ranges, verifies image URLs resolve with 200 responses, and detects schema that only appears in the JavaScript-rendered DOM (invisible to first-wave Googlebot crawl). Pages with schema errors are flagged with the specific property and value to fix, mapped to the Rich Results type affected. |
| AI visibility / GEO | SISTRIX doesn't include AI visibility checks or a GEO (Generative Engine Optimisation) score. There's no check for llms.txt support, AI crawler access in robots.txt (GPTBot, ClaudeBot, PerplexityBot), FAQPage/HowTo schema for AI citation eligibility, question-heading ratio, or content chunkability. As Google AI Overviews, Perplexity, and ChatGPT search expand, AI visibility is an increasingly important gap in traditional rank-tracking and site audit platforms focused on classic SERP positions. | Full GEO score across all five AI visibility signals: AI crawler access in robots.txt, llms.txt presence at the domain root, FAQPage/HowTo JSON-LD in server-rendered HTML, question-heading ratio (≥20% of H2/H3s as questions), and content chunkability (average section ≤400 words). Each signal is checked with platform-specific guidance for how to fix it — whether the site is on WordPress, Shopify, Statamic, or a custom build. |
| Market coverage | SISTRIX is strongest in European markets: Germany, Austria, Switzerland, UK, France, Spain, Italy, Poland, and the Netherlands. The Visibility Index is updated weekly per country with country-specific query samples weighted by local search volume. It's the most widely used SEO benchmark tool among German-language SEO professionals and agencies, and is well-established in UK and Spanish markets. For US-market SEO work, Ahrefs and Semrush have more comprehensive keyword databases and SERP coverage, though SISTRIX covers the US market as well. | Audits any publicly accessible URL regardless of geographic market — the technical audit (canonical tags, schema, CrUX, robots.txt, internal links) applies equally to sites in any country or language. No keyword database or market coverage — purely a technical, on-page, and AI visibility audit layer that works alongside any rank-tracking or keyword research tool, regardless of the market the site targets. |
| Best fit | SISTRIX is best for SEO professionals and agencies in European markets who need the Visibility Index as a domain performance benchmark, competitive SERP share analysis, algorithm update impact tracking, and a combined keyword research + site audit platform on one subscription. Particularly strong for German-speaking markets and agencies managing multiple European market presences. | Best alongside SISTRIX for the technical audit layer SISTRIX doesn't fully cover: crawl-based validation of what Googlebot actually sees, real CrUX Core Web Vitals, JSON-LD schema validation against Google's Rich Results specs, broken link and orphan page detection, AI visibility scoring, and a shareable audit URL for client reporting — without requiring a SISTRIX account or login. |
What each product is
SISTRIX is strongest for visibility index benchmarking, competitive SERP share analysis, algorithm update impact tracking, and combined keyword research plus site audit — particularly for German-speaking and broader European markets where its Visibility Index is the industry standard metric.
DeepSEOAnalysis is strongest for technical audit depth: crawling the live server HTML Googlebot sees, validating JSON-LD schema correctness, detecting broken links and orphan pages, measuring real CrUX field data, and scoring AI visibility — for sites in any market and on any platform.
When to choose which
Pricing context
FAQ
The SISTRIX Visibility Index (VI) is a proprietary weekly metric that measures how prominently a domain appears across a large, market-weighted sample of Google search queries in a specific country. Unlike raw rank tracking (which tracks specific keywords you've manually added), the SISTRIX VI is automatically calculated across a broad representative sample — typically 1 million+ queries for major markets — with each keyword's contribution weighted by its estimated search volume and the CTR adjustment for the position the domain holds. The result is a single number (e.g., "VI 15.43 for domain.com in DE") that reflects the domain's aggregate organic visibility in that market. It's most useful for: tracking the impact of Google algorithm updates on your domain vs competitors, benchmarking your domain's growth trajectory against industry peers, and identifying when a competitor suddenly gains or loses significant SERP share. It's less useful for specific keyword-level analysis or for diagnosing what technical or structural issues are preventing better rankings — that's where a crawl-based audit like DeepSEOAnalysis is complementary.
SISTRIX pricing is subscription-based, with different modules available separately or bundled. Pricing varies by market and bundle configuration; check sistrix.com for current pricing. SISTRIX offers a trial period and the modules can be purchased individually (Toolbox, Links, Optimizer, etc.) or as a bundle. It's positioned as a professional/agency tool and is priced accordingly — typically significantly higher than entry-level SEO tools. DeepSEOAnalysis offers a free unlimited technical audit with no signup, making it a practical complement to a SISTRIX subscription for the specific use case of crawl-based technical SEO validation.
Yes — SISTRIX is available in English and supports analysis of any Google market, including the US, UK, Australia, and Canada. The platform's roots are in the German market (it's headquartered in Bonn, Germany, and dominant in German-speaking markets), but it's a fully internationalised platform used across Europe and globally. The Visibility Index is calculated separately per country market.
Yes, and they address complementary questions. SISTRIX answers: how is this domain performing in Google at the aggregate level, how has it changed over time, how does it compare to competitors by market share? DeepSEOAnalysis answers: what specific technical issues does this site have, what schema errors is Google seeing, are the Core Web Vitals passing Google's thresholds for real users, what's the AI visibility score? The typical workflow: use SISTRIX to identify that a site's Visibility Index dropped after an algorithm update → use DeepSEOAnalysis to audit the technical, on-page, and structured data issues that may be driving the drop → fix the identified issues → track recovery in SISTRIX.
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