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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTesting & Inspection CentersZurichSIZ AG
SIZ AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of SIZ AG is the certification and testing of ICT competencies (Information and Communication Technology) in Switzerland. The company offers practical examination services that are tailored to the Swiss school and training system, and supports educational institutions in the training and certification of students in various ICT areas, such as Data Technology, Systems Network, Web and others.

AI-generated
Offering

Products & services

Industry:Testing & Inspection Centers
✓ Offered9
ICT certificates and diplomas
Swiss-recognised ICT certificates and diplomas for school, apprenticeship and continuing education, with practice-oriented exams for Smart-User, Advanced-User and Power-User.
ICT Smart-User SIZ
Diploma for professional handling of Office applications, digital work with PCs, tablets and smartphones, communication, presentations, and the basics of informatics.
ICT Advanced-User SIZ
Diploma for in-depth user knowledge of Word, Excel, PowerPoint, Windows and cloud computing, including professional documents, calculations, analyses and presentations.
ICT Power-User SIZ (Data & Technology)
Diploma for data analysis, data evaluation and business intelligence with Excel, pivot tables, Power Query, financial data, budget planning, trend analyses and databases.
ICT Power-User SIZ (Systems & Network)
Diploma for setting up, configuring and administering ICT and network solutions, including system administration, data security, networks, cloud connectivity and technical support.
Test exams
Test exams for all diploma and module levels, as a substitute for exams in training, for placement and as preparation for final exams.
Learning objective checks
Thematically focused mini exams of 10, 15 or 20 minutes to check knowledge levels and prepare for Smart-User and Advanced-User exams.
Train@SIZ subscription
Licensed subscription for test exams in expert knowledge, with access to training and testing options for exam preparation.
BIVO 2023 offer
Support for the reformed KV apprenticeship with self-organised learning and a coordinated exam offering for the Technology option of the BiVo 2023.
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4.1/5

SIZ AG

Trust & reputation

ranQ Trust Score of SIZ AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

SIZ AG scores 54.0 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.19.524%
  • 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%
SIZ AG scores 92.3 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.100.012%
  • 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.82.07%
SIZ AG 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%
SIZ AG scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

SIZ AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.3 out of 5 stars from 101 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
3.3
of 5

Aggregated from 101 reviews across all connected sources

Sources
GGoogle3.3101
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Hier entsteht die Karte
Reitergasse 9
8004 Zurich
Opening hours
Mon
08:30 - 12:00, 13:30 - 17:00
Tue
08:30 - 12:00, 13:30 - 17:00
Wed
08:30 - 12:00, 13:30 - 17:00
Thu
08:30 - 12:00, 13:30 - 17:00
Fri
08:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-111.961.803
Founded
2004 · 22 years
Last commercial register change
July 27, 2026
Employees
21 to 50
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.
100.0
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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