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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIT & CommunicationPublic Relations ConsultingLe LignonTandem Advertising Sàrl
Tandem Advertising Sàrl Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Tandem offers services in the field of corporate communication and marketing, particularly for companies in the Romandy region (French-speaking part of Switzerland). The core activities include: analysis of the competitive environment and development of communication strategies; conception and creation of content (text, images, videos) for various channels (web, social media, email); creation of websites and online presence; implementation of email marketing campaigns and tracking; consulting and support in the development of brand identities and corporate cultures; creation of content for corporate communication (press releases, blog posts, etc.). Overall, Tandem supports companies in the development and implementation of communication and marketing strategies to strengthen their online presence and achieve their goals.

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Offering

Products & services

Industry:Public Relations Consulting
✓ Offered
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4.1/5

Tandem Advertising Sàrl

11
News-based communication
Editorial scheduling, writing and publishing content, sector and cultural monitoring, testimonials, management editorials, case studies and crisis management via a newsroom.
Content writing
Writing for web pages, blog articles, emails, press releases, press kits, social media publications and SEO or storytelling content.
Communication strategy
Communication plan, brand strategy, responsible communication, management communication, internal communication and crisis communication.
Digital marketing
Inbound marketing, content marketing, storytelling, copywriting, mailing, social media, digital strategy and integrated newsroom.
Web agency
Creation and redesign of corporate or institutional websites, SEO optimisation, web content and support for digital transformation.
Brand awareness and public relations
Analysis and development of brand awareness, public relations, sponsorship, brand content, opinion leaders, influencers and institutional communication activities.
Audiovisual production
Photographic reports, image acquisition, motion design, commercial presentation videos, customer or employee testimonials, process films and interviews.
Email marketing
Emailing campaigns, newsletters, marketing emails and event communications, public relations or crisis communications with tracking and a secure platform.
Websites and SEO
Design of websites on WordPress, editorial and visual architecture, SEO optimisation, search engine optimisation audit and visibility optimisation.
Branding and visual identity
Logotype, graphic guidelines, visual identity, structural and commercial applications, as well as information and wayfinding signage.
Product and service launch
Launch of products and services in the Romandy market, according to the budget and objectives defined with the client.
Trust & reputation

ranQ Trust Score of Tandem Advertising Sàrl: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Tandem Advertising Sàrl scores 59.3 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.75.024%
  • 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.40.910%
  • 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.35.08%
Tandem Advertising Sàrl scores 86.7 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.70.07%
Tandem Advertising Sàrl 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%
Tandem Advertising Sàrl scores 97.1 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 35.97.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tandem Advertising Sàrl reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 4 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 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Chemin Barde 2
1219 Le Lignon
Opening hours
Mon
08:30 - 12:30, 13:30 - 17:30
Tue
08:30 - 12:30, 13:30 - 17:30
Wed
08:30 - 12:30, 13:30 - 17:30
Thu
08:30 - 12:30, 13:30 - 17:30
Fri
08:30 - 12:30, 13:30 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-111.728.388
Founded
2004 · 22 years
Last commercial register change
March 10, 2026
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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