# SEO tools compared: Sistrix, Semrush, Ahrefs and Seobility

> Four SEO tools assessed on data coverage, features, AI modules, data location and pricing model. With a feature matrix and a recommendation for each use case.

- URL: https://techtafel.com/en/compare/seo-tools-comparison/
- Author: [George Moreno](https://techtafel.com/en/author/george-moreno/), Author
- Published: 13 November 2026
- Other languages: DE https://techtafel.com/vergleich/seo-tools-vergleich/

## In short

Sistrix, Semrush, Ahrefs and Seobility all cover keyword research, backlinks, on-page audits and rank tracking. They differ in data coverage, AI features, data location and price level. Sistrix suits European companies focused on data protection, Semrush multi-channel teams, Ahrefs link analysis and Seobility small budgets.

**An SEO tool is the measurement base of any search engine optimisation.** Sistrix, Semrush, Ahrefs and Seobility are tools that marketing teams in Europe frequently compare. All four offer the core functions. They differ in data coverage, data location, pricing model and features for AI search.

This comparison assesses the four tools on publicly documented information as of November 2026. The ranking is an editorial assessment for a typical company in the German-speaking market and the wider EU.

## Ranking

### 1. Sistrix

Best for: European companies and agencies focused on data protection

Sistrix combines data geared to the German-speaking market with EU data hosting and transparent monthly plans. Its AI modules are broad but still in beta.

**Pros**

- Servers exclusively in EU data centres
- Data for more than 50 countries
- AI modules currently at no extra cost

**Cons**

- AI features in beta
- No permanent free plan

### 2. Semrush

Best for: Marketing teams combining SEO, advertising, content and social

Semrush offers 142 country databases and many marketing areas in one platform. EU data is covered by standard contractual clauses with transfers to the US.

**Pros**

- 142 country databases
- AI visibility included in SEO plans
- Free plan

**Cons**

- Data transfers to the US
- Complex plan structure

### 3. Ahrefs

Best for: Link building and international competitor analysis

Ahrefs stands out with backlink and competitor data for 217 locations and Brand Radar for six AI platforms. Brand Radar costs extra, and personal data is stored in the US.

**Pros**

- Large backlink index
- Brand Radar for six AI platforms

**Cons**

- Brand Radar is an add-on
- Data storage in the US

### 4. Seobility

Best for: Small businesses, freelancers and beginners on a small budget

Seobility is the most affordable entry point in this comparison, with a permanent free plan and a focus on audits and rank tracking. For deep competitor and AI analysis, its scope does not yet match the other three.

**Pros**

- Free plan
- Low price level
- Focus on website audit and rank tracking

**Cons**

- AI tracking in beta
- Server location not stated explicitly

## Criteria

- **Data coverage and countries**: Scope of keyword and ranking data, number of countries, freshness according to the vendor.
- **Feature areas**: Keyword research, backlinks, on-page audit, rank tracking and further modules.
- **AI and GEO features**: Measuring visibility in AI Overviews, AI Mode, ChatGPT and other AI systems.
- **Data location and GDPR**: Server location, transfers to third countries, contractual basis according to the vendor.
- **Pricing model**: Plan structure, entry point, free plan or trial, contract term and price level.

TechTafel assesses the tools based on public vendor information: pricing pages, manuals, changelogs, privacy policies and data processing agreements, as of November 2026. We did not run our own measurements of data quality.

The criteria are weighted: data coverage 25 percent, feature areas 25 percent, AI and GEO features 20 percent, data location 15 percent, pricing model 15 percent. The assessment targets companies and agencies in Europe, with a focus on the German-speaking market. The full criteria catalogue is described in the [TechTafel methodology](https://techtafel.com/en/methodology/).

## What do SEO tools offer today?

**All four tools cover the core SEO functions.** According to the vendors, Sistrix, Semrush, Ahrefs and Seobility offer keyword research, backlink analysis, an on-page crawler and rank tracking. The differences lie in data coverage, data location and pricing model. Features for AI search come on top.

All four vendors now have modules for AI visibility. They query AI systems with fixed prompts and log which brands and sources appear. Why this matters for your work is explained in our article [GEO vs. SEO](https://techtafel.com/en/blog/geo-vs-seo/). Specialised tools for this job are covered in our [comparison of AI visibility tools](https://techtafel.com/en/compare/ai-visibility-tools-comparison/).

![Feature matrix as a graphic: Sistrix, Semrush, Ahrefs and Seobility compared on keyword research, backlinks, audit, rank tracking, AI visibility, free plan, trial and data storage](https://techtafel.com/media/01a1d547-9305-7d09-82b8-5016d8352ba6-800.webp)
*Features of the four SEO tools according to vendor information.*

## The four tools at a glance

| Criterion | Sistrix | Semrush | Ahrefs | Seobility |
| --- | --- | --- | --- | --- |
| Headquarters | Bonn, Germany | Boston, part of Adobe since 2026 | Singapore | Nuremberg, Germany |
| Data coverage | Data for more than 50 countries | 142 country databases, 28.8 bn keywords | Keyword index for 217 locations | Google rankings by country and city |
| AI features | AI Check, prompt tracking, prompt research (beta) | AI Visibility Toolkit, included in SEO plans | Prompt checks in plans, Brand Radar as add-on | AI visibility tracking (beta) |
| Data storage | EU data centres | Transfers to the US under standard contractual clauses | Storage in the US | Company in Germany, hosting not stated |
| Entry | 14-day trial | Free plan, 7-day trial | Free access for your own website | Free plan, 14-day trial |
| Price level | medium to high | medium to high | medium to high | low to medium |

The table shows vendor information. The vendors measure their data volumes differently, so the figures are only partly comparable. Ahrefs counts locations, Semrush country databases and Sistrix countries with their own ranking data.

## Where are the strengths?

### Sistrix

**Sistrix is tailored to the German-speaking market.** Its core is the Visibility Index, which Sistrix collects in more than 50 countries. According to the vendor, its systems run exclusively in EU data centres. Since the third quarter of 2026, the AI Check covers six AI systems, in beta and currently at no extra cost. Details are in our [Sistrix review](https://techtafel.com/en/review/sistrix-review/).

### Semrush

**Semrush bundles the most marketing areas.** Besides the SEO toolkit, there are toolkits for advertising, content, social media, local search and AI visibility. According to its data page, the database covers 142 country databases and 28.8 billion keywords. Semrush has been part of Adobe since April 2026. For data from the EU, Semrush relies on the EU standard contractual clauses in its data processing addendum.

### Ahrefs

**Ahrefs focuses on backlink and competitor data.** Ahrefs cites a keyword index for 217 locations and a backlink history with 35 trillion records. Brand Radar measures presence in AI Overviews, AI Mode, ChatGPT, Perplexity, Gemini and Copilot. According to its privacy policy, Ahrefs stores personal data in the US.

### Seobility

**Seobility is the most affordable entry point in this comparison.** The free plan includes one project, ten keywords and three AI prompts. The paid plans sit below the other three tools in price level. Seobility is based in Nuremberg. Its privacy policy does not explicitly state a server location for the platform. For rank tracking, Seobility supports countries and, as a paid option, individual cities, according to its help centre.

## What should you look out for?

**Data coverage determines usefulness.** A large international database helps little if your customers search in Austria, Poland or the Netherlands. During the trial, check whether the key keywords in your sector are covered with search volume and rankings.

Data protection is mainly about account and project data. SEO tools largely analyse public search results. Personal data includes user accounts, billing data and linked analytics accounts. For companies with strict requirements, what matters is where the vendor stores this data and on what contractual basis.

**AI modules are still young.** At Sistrix and Seobility they run in beta, and at Ahrefs Brand Radar costs extra. The AI systems covered and the measurement methods change from quarter to quarter. Plan to review this part after six months.

The pricing model determines total cost. Additional users, credits, add-ons and toolkits can raise the base price considerably. Calculate with the number of users and projects you actually need.

## Which tool suits whom?

- **European companies and agencies focused on data protection:** Sistrix, because of EU data hosting and its focus on the German-speaking market.
- **Marketing teams working across channels:** Semrush, because advertising, social media and content sit in one platform.
- **Link building and international competitor analysis:** Ahrefs, because of its backlink index and many locations.
- **Small businesses, freelancers and beginners:** Seobility, because of its free plan and low price level.

> **Hinweis:**
>
> **The ranking is an editorial assessment.** It applies to a typical European company focused on data protection. For a team with a global focus, the order may differ.

Test with your own domains before you buy. All four vendors offer a free plan, free access or a trial. Above all, check how well the data covers your most important markets.

**For most companies in the German-speaking market, Sistrix is the obvious first choice**, especially where data location matters. Semrush fits better if several marketing channels should sit in one platform. Ahrefs pays off for intensive link and competitor analysis. Seobility covers the basics at the lowest price.

*Disclosure: TechTafel belongs to TRYSEO UG, an SEO and GEO agency. This comparison contains no affiliate links. The assessment is based on public vendor information and the TechTafel criteria catalogue.*

## Frequently asked questions

### Which SEO tool is best?

It depends on the use case. For European companies focused on data protection, TechTafel ranks Sistrix first. Semrush suits multi-channel marketing, Ahrefs link analysis and Seobility small budgets.

### Which SEO tool stores data in the EU?

According to the vendor, Sistrix runs its systems exclusively in EU data centres. Semrush and Ahrefs transfer or store data in the US. Seobility does not state a server location for its platform.

### Is there a free SEO tool?

Semrush and Seobility offer permanent free plans with tight limits. Ahrefs offers free access to data on your own website. Sistrix offers a 14-day trial and some free tools.

### Do SEO tools also measure visibility in ChatGPT?

Yes, all four have modules for this, some in beta or as add-ons. Specialised tools are covered in our [comparison of AI visibility tools](https://techtafel.com/en/compare/ai-visibility-tools-comparison/).

## Sources

1. [SISTRIX Preise](https://www.sistrix.de/preise/), SISTRIX GmbH, 2026-11
2. [Transparenz aus Europa, für Europa](https://www.sistrix.de/sistrix/europa/), SISTRIX GmbH, 2022-05-02
3. [Marken-Analysen im AI Check, Chat für die Deep Dives und die neue Navigation: SISTRIX-Updates im dritten Quartal 2026](https://www.sistrix.de/news/changelog-q3-2026/), SISTRIX GmbH, 2026-09-29
4. [Weltweite Daten in SISTRIX: Neue Möglichkeiten für globale Analysen](https://www.sistrix.de/changelog/weltweite-daten), SISTRIX GmbH, 2024-12-20
5. [Semrush Plans and Pricing](https://www.semrush.com/prices/), Semrush, 2026-11
6. [Semrush Data & Metrics](https://www.semrush.com/kb/997-semrush-data), Semrush, 2026
7. [Data Processing Addendum](https://www.semrush.com/company/legal/dpa/), Semrush, 2026-11
8. [Adobe Completes Acquisition of Semrush](https://news.adobe.com/news/2026/04/adobe-completes-semrush-acquisition), Adobe, 2026-04-28
9. [Ahrefs Pricing](https://ahrefs.com/pricing), Ahrefs, 2026-11
10. [Ahrefs Big Data](https://ahrefs.com/big-data), Ahrefs, 2026-11
11. [Brand Radar](https://ahrefs.com/brand-radar), Ahrefs, 2026-11
12. [Ahrefs’ Privacy Policy](https://ahrefs.com/legal/privacy-policy), Ahrefs Pte. Ltd., 2026-08-04
13. [Seobility Preise und Pakete](https://www.seobility.net/de/preise/), Seobility GmbH, 2026-11
14. [Datenschutzerklärung](https://www.seobility.net/de/datenschutz/), Seobility GmbH, 2026-02-09
15. [Ranking Monitoring in Seobility: How it works + FAQs](https://help.seobility.net/en/article/ranking-monitoring-in-seobility), Seobility, 2026-11