How Habs & Louis turns gym memberships into always-on influencer marketing with Stellar

To grow brand awareness and drive memberships for London-based Gymbox and Amsterdam-based TrainMore (both part of Urban Gym Group), influencer agency Habs & Louis built an always-on creator program designed for authenticity and scale. Instead of one-off sponsored posts, the strategy turns premium gym memberships into year-round, organic content. Discover how Habs & Louis used the Stellar platform to track, manage, and measure this large-scale ambassador program in real time.

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Habs & Louis

The agency turning creator culture into lasting brand presence

Habs & Louis was born when Merel and Cecile met while working at the same company. A shared passion for creativity quickly brought them together, and they decided to build something of their own. What started as a small influencer agency grew into a full-service creative marketing agency.

Today, Habs & Louis helps brands grow through online campaigns, smart social strategies, and memorable offline experiences like events and activations. From day one, the team has been driven by passion and a genuine love for the brands it works with, bringing creativity, strategy, and community together to turn ideas into meaningful campaigns and help brands of all kinds build their presence and connect with people.

That same philosophy shaped the agency’s work with Gymbox and TrainMore, two of the most distinctive fitness brands within Urban Gym Group. Rather than chasing short-term campaign spikes, Habs & Louis looked beyond traditional fitness creators to tap into a broader mix of culturally relevant personalities: creators with an affinity for sport, wellness, lifestyle, fashion, or simply strong and entertaining personal brands. The result is an ambassador-style program that keeps these gyms top of mind all year round, powered by Stellar.

The objectives

Building authentic visibility that lasts beyond the campaign

Gymbox and TrainMore came to the table with a clear ambition: increase brand awareness, drive memberships, and maximize earned media value, all without leaning on one-off sponsored posts or overly scripted fitness content. In a category saturated with the same gym selfies and rehearsed workout clips, standing out meant doing something different. The real challenge wasn’t running a single campaign; it was designing an influencer strategy that felt authentic, scalable, and sustainable over time, one that could keep working month after month rather than fading the moment a campaign ended.

That ambition translated into three guiding goals: generate as many impressions as possible, keep CPM highly efficient, and build long-term visibility instead of short-lived campaign spikes. Hitting all three at once is where most influencer programs struggle, because reach, efficiency, and longevity usually pull in different directions. Achieving them together would require not just the right creators, but the right infrastructure to manage and measure everything in one place.

Across an always-on program spanning dozens of creators, Stellar gave Habs & Louis the infrastructure to manage, track, and prove impact, all in one place.

  • Centralized overview: Creator activity, agreements, and performance consolidated on a single platform.
  • Real-time content tracking: Instant visibility into who posted and how each piece performed.
  • Detailed performance measurement: Reach, engagement, EMV, and CPM precisely quantified to evaluate real impact.
  • Operational efficiency: Automated reminders and reporting reduced manual work and kept a large creator group on track.
  • A strategic asset for growth: Consolidated data made it easy to demonstrate results and refine the program over time.

Thanks to Stellar, Habs & Louis transformed a complex, large-scale ambassador program into a scalable engine for sustained awareness and growth.

The strategy

Memberships, not deliverables

Rather than paying creators for individual posts, Gymbox and TrainMore offer selected influencers a 12-month membership in exchange for ongoing content throughout the year.

The concept works because it aligns naturally with creator behavior. Many creators already work out regularly and organically share gym-related content. By giving them access to a premium membership, the gyms become part of their weekly routines, making content creation feel authentic rather than transactional.

The campaign focuses on:

  • Diverse, personality-driven creators
  • Long-term, ambassador-style collaborations
  • Flexible content formats instead of rigid briefing structures

Creators are free to share in their own style across TikTok, Instagram Reels, in-feed posts, and Instagram Stories, producing content that feels native to each audience while keeping Gymbox and TrainMore continuously top of mind.

The execution

Managing 88 creators in one place

In total, 88 creators contributed with content to the Gymbox monthly campaign. Managing monthly deliverables across such a large creator group can quickly become operationally complex, so the team relies on Stellar to track creator activity, monitor agreements, and manage reporting from one centralized platform.

Using Stellar’s reporting and overview features, the team can instantly see:

  • Which creators posted content
  • Who needs reminders
  • Performance across the campaign
  • Overall earned media impact

This makes it possible to run an always-on influencer strategy at scale, without losing visibility or control.

The results

Efficient reach, authentic exposure

The program continues to deliver strong awareness and media value. The figures below are an example of one month’s performance (March) for Gymbox:

  • Total reach: 3.15m
  • Engagement: 101.36k
  • Earned Media Value (EMV): €906.91k
  • CPM below €5

By leveraging memberships instead of traditional paid sponsorships, Gymbox and TrainMore achieve highly efficient visibility while building authentic, recurring creator exposure over time.

Key takeaway

The success of the Gymbox and TrainMore partnership shows that influencer marketing doesn’t always need heavily produced campaigns or short-term bursts of content. When creators genuinely use and enjoy a product or service, long-term partnerships generate more authentic storytelling, stronger brand integration, and significantly more efficient media value. Combined with the right tracking and reporting infrastructure, always-on creator programs can become a scalable engine for growth.

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In a short demo, we’ll walk you through the platform and explore how your team can save time, find better creators, and prove campaign impact with more confidence.

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