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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryArts, Culture & RecreationSports & Recreation InstructionGlisStefan Schwestermann Tennishighschool GmbH
Stefan Schwestermann Tennishighschool GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The company offers tennis courses and camps for children, adolescents and adults, as well as a tennis high school that allows individuals to fully dedicate themselves to tennis and their own progress.

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Offering

Products & services

Industry:Sports & Recreation Instruction
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4.1/5

Stefan Schwestermann Tennishighschool GmbH

✓ Offered
3
Tennis courses
Private lessons and group coaching for children, teenagers and adults at various locations such as TC Bellevue, TC Bremgarten, TC Deisswil, TC Sporting and Tivolicenter.
Tennis camps and tennis holidays
Tennis camps and tennis holidays for children, teenagers and adults during school holidays and as holiday offers, including children’s and junior tennis camps, an adults’ camp, Weekendcamp and the Sommercamp Tenero.
Vouchers
Individual gift vouchers with fixed amounts or for private lessons, orderable with an invoice by email to the specified address.
Trust & reputation

ranQ Trust Score of Stefan Schwestermann Tennishighschool 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.

Stefan Schwestermann Tennishighschool 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%
Stefan Schwestermann Tennishighschool GmbH scores 77.2 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.86.512%
  • 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%
Stefan Schwestermann Tennishighschool 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%
Stefan Schwestermann Tennishighschool GmbH scores 34.3 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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Stefan Schwestermann Tennishighschool 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.

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Location

Gstipfstrasse 47b
3902 Glis
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
07:30 - 17:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-489.903.986
Founded
2016 · 10 years
Last commercial register change
June 5, 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.88.06%
  • 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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