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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryPublic Administration & EducationContinuing Education InstitutesWeisslingenSprachpflege Sabrina Keller
Sprachpflege Sabrina Keller Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of the company "Sprachpflege Sabrina Keller" encompasses the following areas: Language instruction: German and French, including exam preparation and individual courses; Tutoring: German and French; Editing and proofreading: Correction and editing of papers for students and pupils; Dunstan Baby Language: Instruction in the Dunstan Baby Language method for expectant parents and parents of newborns; Workshops: For (expectant) parents and professionals on various topics.

AI-generated
Offering

Products & services

Industry:Continuing Education Institutes
✓ Offered7
Private German Lessons
Learn German or improve your German skills, online or in person; lessons for all levels from A0 to C2, including individual pronunciation coaching.
Preparation for German Language Tests
Individual preparation course for telc, Goethe, KDE and the police academy; including exam strategies, dealing with exam anxiety, stress management and study tips, online or in person.
Swiss German
Private lessons or small-group courses for Züritüütsch; understanding and speaking the Zurich dialect, with grammar, vocabulary and cultural topics, online or in person.
Dunstan Baby Language
Workshops for (future) parents on Dunstan Baby Language; 5 reflex sounds, the bonus sound for teething, soothing techniques and support in understanding the baby’s needs.
Dunstan Baby Language for Professionals
Workshops for professionals on Dunstan Baby Language; in-depth content on research and preventive benefits, with 5 reflex sounds, the bonus sound for teething, and transfer into everyday professional practice.
Proofreading
Proofreading of theses (specialisation projects), Bachelor’s and Master’s theses as well as other texts; spelling, punctuation, typography and grammar.
Editing
Editing of theses (specialisation projects), Bachelor’s and Master’s theses as well as other texts; spelling, punctuation, grammar, style, sentence structure, redundancies, abbreviations and coherence.
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3.9/5

Sprachpflege Sabrina Keller

Trust & reputation

ranQ Trust Score of Sprachpflege Sabrina Keller: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 54% · As of October 2026

Sprachpflege Sabrina Keller 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%
Sprachpflege Sabrina Keller scores 63.3 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.64.612%
  • 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%
Sprachpflege Sabrina Keller scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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%
Sprachpflege Sabrina Keller scores 6.6 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 35.6.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sprachpflege Sabrina Keller reaches a ranQ Trust Score of 3.9 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.

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Location

Tollenstrasse 23
8484 Weisslingen

At a glance

Legal form
Sole proprietorship
UID
CHE-238.446.546
Founded
2021 · 5 years
Last commercial register change
February 16, 2021
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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