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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryArts, Culture & RecreationSports & Recreation InstructionDübendorfIrene Homberger GmbH
Irene Homberger GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the training and certification of divers, particularly in the field of technical diving education and cave diving education, as well as the implementation of environmental protection projects and research projects in the field of diving.

AI-generated
Offering

Products & services

Industry:Sports & Recreation Instruction
✓ Offered9
GUE diving training
GUE courses for sport, cave and wreck divers, with theory, dives, skills training, trim, buoyancy control, fin kicks and safety drills.
GUE Fundamentals Course
Four-day course focusing on fundamental skills, fin-stroke techniques, trim, buoyancy control and equipment handling; prerequisite for further GUE courses.
GUE Rec 1 Course
Beginner course in dry diving with trim, buoyancy control, equipment handling and fin-stroke technique; for entry into GUE training.
GUE Primer Course
Two-day introductory course without certification for divers who want to learn about the Wing, the backplate and the DIR concept, or get a first insight into GUE.
GUE Doubles Course
Course for diving with twinset (doubles), with exercises, drills and fundamentals in handling the twinset and the complete equipment.
GUE Drysuit Course
Course for diving in a drysuit, including handling the suit, undergarments and repairing the suit.
GUE DPV1 Scooter Course
Course for diving with a DPV/scooter, with applications in advanced dives and in recreational diving.
GUE Cave 1 Course
Course for cave diving with scheduled dates in France, Sardinia or Florida; part of advanced GUE training.
Dry cave course (single-rope technique – SRT)
Comprehensive course for cave divers with practice, theory, vertical equipment transport, shaft entry techniques and dives according to rappel anchor points.
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4.0/5

Irene Homberger GmbH

Trust & reputation

ranQ Trust Score of Irene Homberger GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Irene Homberger GmbH scores 63.9 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.70.824%
  • 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.27.910%
  • 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.88.08%
Irene Homberger GmbH scores 80.9 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.70.07%
Irene Homberger 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%
Irene Homberger GmbH scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Irene Homberger GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Wallisellenstrasse 47
8600 Dübendorf
Opening hours
Mon
Closed
Tue
Closed
Wed
Closed
Thu
Closed
Fri
Closed
Sat
Closed
Sun
24h

At a glance

Legal form
Limited Liability Company
UID
CHE-404.826.202
Founded
2016 · 10 years
Last commercial register change
May 20, 2020
Employees
11 to 20
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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