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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesMarket Research InstitutesZurichGrünenfelder Zumbach GmbH
Grünenfelder Zumbach GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Grünenfelder Zumbach GmbH is the conduct of social research and consulting, particularly in the areas of: data collection and analysis, evaluation and opinion research, data science and machine learning, and the dissemination of social science research and modern data science methods. The company provides consulting and research services to clients, focusing on practical application and scientifically sound methods.

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Grünenfelder Zumbach GmbH

✓ Offered
4
Opinion research
Surveys and interviews, focus groups, online opinion research, data analysis and interpretation as well as reporting and presentation for organizations, government agencies, companies and associations.
Evaluation
Planning and conducting summative and formative evaluations, ex-ante, on-going and ex-post evaluations, support for self-evaluations as well as development of impact models.
Consulting
Strategic consulting, organizational development, feasibility studies, project-based controlling as well as development of co-design and decision-making processes and implementation plans.
Data Science
Programming and conducting surveys and online experiments, automated data and information extraction, data management, data cleansing, scientific analysis, visualization and machine learning.
Trust & reputation

ranQ Trust Score of Grünenfelder Zumbach GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Grünenfelder Zumbach GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Grünenfelder Zumbach GmbH scores 78.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.89.612%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Grünenfelder Zumbach GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Grünenfelder Zumbach GmbH scores 77.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.77.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Grünenfelder Zumbach GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Knowledge

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Location

Grubenstrasse 21b
8045 Zurich

At a glance

Legal form
Limited Liability Company
UID
CHE-437.416.006
Founded
2015 · 11 years
Last commercial register change
July 7, 2025
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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