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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryPublic Administration & EducationContinuing Education InstitutesZurichOnline School GmbH
Online School GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company offers online language courses and instruction in various languages such as English, German, French, Italian, Spanish, Chinese, and Russian. It also offers specialized courses like Cambridge courses, IELTS courses, TOEFL courses, and Business English courses. Additionally, it provides tutoring and conversation courses. The core activity of the company is the imparting of language skills and the provision of online language instruction.

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Offering

Products & services

Industry:Continuing Education Institutes
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4.5/5

Online School GmbH

✓ Offered4
Online private lessons
Flexible 1:1 language lessons via video chat in English, German, French, Italian, Spanish, Russian and Chinese with native, certified instructors.
Corporate language courses
Online language training for companies in English, German, French, Italian, Chinese, Russian and Spanish, flexible via video chat in each case and tailored to business needs.
Small group classes
Online small-group classes for English, French and German, with courses from A1 to B2 as well as preparation for Cambridge, DELF, DALF, Goethe and telc certificates.
Online language tests
Online placement tests and language tests for English, German, French, Italian, Spanish and Russian, including level assessments from A1 to C2 and exam-focused tests.
Trust & reputation

ranQ Trust Score of Online School GmbH: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Online School GmbH scores 96.9 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.94.624%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.100.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.100.08%
Online School GmbH scores 74.1 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.79.212%
  • 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%
Online School GmbH scores 85.0 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).85.022%
Online School GmbH scores 51.4 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 35.51.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Online School GmbH reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.9 out of 5 stars from 762 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 762 reviews across all connected sources

Sources
GGoogle4.9762
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Location

Mühlackerstrasse 102
8046 Zurich
Opening hours
Mon
08:00 - 22:00
Tue
08:00 - 22:00
Wed
08:00 - 22:00
Thu
08:00 - 22:00
Fri
08:00 - 22:00
Sat
08:00 - 22:00
Sun
08:00 - 22:00

At a glance

Legal form
Limited Liability Company
UID
CHE-486.574.550
Founded
2018 · 8 years
Last commercial register change
April 15, 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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