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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryPublic Administration & EducationContinuing Education InstitutesZurichNiklaus Umiker gramma.center
Niklaus Umiker gramma.center Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Niklaus Umiker gramma.center provides German language instruction (A1–C2), including individual and group lessons, customised courses, grammar and telephone training, and conversation practice. The website also describes exam preparation and exam training for Goethe and telc certificates and lists examination expertise and an SVEB I qualification.

AI-generated
Offering

Products & services

Industry:Continuing Education Institutes
✓ Offered4
Course catalogue
Language courses for Swiss German and German, with classes at different levels, online via Zoom or in person in Zurich.
German as a native language
German tuition for native speakers, covering spelling, style, proofreading, as well as exam preparation and tutoring for students with gaps and uncertainties.
Swiss German (CH)
Course in practical Swiss German, focusing on spoken Swiss German in everyday life and on transferring between written German and dialects.
Exam preparation
Preparation for language exams through external test centres, in particular Goethe-Institut and telc, in various cities.
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3.6/5

Niklaus Umiker gramma.center

Trust & reputation

ranQ Trust Score of Niklaus Umiker gramma.center: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

x

Data basis 54% · As of October 2026

Niklaus Umiker gramma.center 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.
x
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%
Niklaus Umiker gramma.center scores 52.6 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.39.612%
  • 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%
Niklaus Umiker gramma.center scores 83.3 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).83.322%
Niklaus Umiker gramma.center scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Niklaus Umiker gramma.center reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». 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.

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Location

Brandschenkestrasse 150
8002 Zurich

At a glance

Legal form
Sole proprietorship
UID
CHE-251.575.370
Founded
2024 · 2 years
Last commercial register change
July 19, 2024
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.
67.0
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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