In this episode of HappyPorch Radio, hosts Barry O’Kane and Jo Weston talk with Frans Biegstraaten, co-founder of BIYU, a modular rental, subscription and PAAS platform helping businesses build circular systems that scale.

BIYU started as a consumer rental service in Amsterdam, offering same-day delivery on everything from drills to electric bikes. When the business had to pivot, Frans and his team transformed their operational know-how and internal software into a SaaS product that now supports circular businesses across Europe.

✨ In this episode we learn about:

• The journey from consumer rental startup to multi-tenant SaaS provider

• How BIYU’s tech manages repair, refurbishment, and reverse logistics.

• Why integrating circular systems with existing tech like Shopify and Firmhouse matters.

• The challenges and rewards of building circular tech through experimentation.

• How BIYU enables brands to pilot circular models before full adoption.

📌 Mentioned in this episode:

BIYU – www.biyu.world

Shopify - https://www.shopify.com/

Firmhouse - https://www.firmhouse.com/

👤 About our guest:

Frans Biegstraaten is co-founder of BIYU, a circular technology company based in the Netherlands. BIYU helps rental and Product-as-a-Service companies manage everything from asset tracking to refurbishment using its modular SaaS platform.

Frans Biegstraaten on LinkedIn: https://www.linkedin.com/in/fwbiegstraaten/

🌍 About HappyPorch

HappyPorch is a purpose-driven software engineering consultancy focused on the circular economy.

Learn more: https://www.happyporch.com

💌 Subscribe to HappyPorch Circular News

HappyPorch Circular News is our monthly newsletter for people working in and around the circular economy and technology.

Subscribe at: https://www.happyporch.com/newsletter/

🎙 Explore the Circular Economy Podcasts Guide

We’ve created something new: the Circular Economy Podcasts Guide. After 9 seasons of HappyPorch Radio and years of discovering other brilliant shows on circularity, we realised the podcast space needed a central, searchable place to explore the best voices in circular innovation.

Browse at: https://circulareconomypodcasts.guide/

▶️ Listen and subscribe:

Stream this episode on Apple Podcasts, Spotify, Deezer, iHeart, Pocket Casts — or wherever you get your podcasts.

Visit https://www.happyporchradio.com to explore more episodes.

What if attending a wedding, gala, or an important event didn’t mean buying something new, but instead allowed you to rent a designer-quality outfit?

In this episode of HappyPorch Radio we are joined by Büsra Zanner, the founder of Wearr. Wearr is a German-based startup reinventing circular fashion rental for special occasions.

Büsra shares how her tech background shaped Wearr’s customer-first approach, from prioritising flawless event delivery to building a data-driven platform that keeps garments in circulation longer.

With a focus on convenience, automation, and strong partnerships, Wearr is proving how circular models can delight customers, extend product lifecycles, and shift mindsets away from ownership toward access.

✨ In this episode:

• Büsra explains why customer experience must come first in rental - even before sustainability.
• We learn about the emotional side of circular fashion: garments creating new stories through multiple lives.
• Büsra talks about building a tech stack for rental that uses data to optimise sourcing, curation, and customer experience.
• We touch on the challenges and opportunities of sourcing: buying retail, partnering with private lenders and working with designers and retailers.
• We learn why focus and clarity matter for early-stage circular startups.
• Büsra highlights the importance of picking the right partnerships - and knowing when to say no.
• We find out how Wearr achieves a 100 NPS by prioritising reliability and delight.

📌 Mentioned in this episode:

Wearr - https://www.wearr.com/

👤 About our guest:

Büsra Zanner is the Founder & CEO of Wearr, a fashion tech startup out of Munich making wardrobe sharing effortless and premium. After 5+ years in B2B SaaS at Celonis, leading global solution engineering teams, she made the shift into fashion to build a more circular future. Learn more at: https://www.linkedin.com/in/busrazanner?originalSubdomain=de

🌍 About HappyPorch

HappyPorch is a purpose-driven software engineering consultancy focused on the circular economy. Learn more: https://www.happyporch.com

💌 Subscribe to HappyPorch Circular News

HappyPorch Circular News is our monthly newsletter for people working in and around the circular economy and technology. Subscribe at: https://www.happyporch.com/newsletter

🎙 Explore the Circular Economy Podcasts Guide

Discover the best voices in circular innovation: https://circulareconomypodcasts.guide

▶️ Listen and subscribe:

Stream this episode on Apple Podcasts, Spotify, Deezer, iHeart, Pocket Casts — or wherever you get your podcasts.

Explore more at...

What if you could arrive at your ski chalet and find premium ski wear waiting for you, no suitcase, no hassle, and a lot less waste?

In this episode of HappyPorch Radio, hosts Barry O’Kane and Tandi Tuakli talk with Anna Smoothy and Anders Bergenstrand, co-founders of Cirkel Supply, a Swiss startup rethinking ski holidays with circular rental.

Cirkel combines technology and circular design to make ski wear rental simple and sustainable. Using platforms like Shopify and Supercycle, they deliver high-quality ski outfits directly to accommodation, proving how smart tech choices can support convenience, reduce waste, and keep products in circulation.

✨ In this episode:

• Why ski wear is a perfect case for access over ownership
• How off-the-shelf tech platforms help startups scale efficiently
• The role of lifecycle assessments in measuring circular impact
• What seasonality teaches about building resilient circular systems
• Cirkel’s vision for expanding beyond Switzerland to serve global ski tourism

📌 Mentioned in this episode:

Cirkel Supply – https://cirkelsupply.com

👤 About our guests:

Anna Smoothy and Anders Bergenstrand are co-founders of Cirkel Supply, a Swiss-based startup making circular ski wear rental convenient, premium, and sustainable. With backgrounds in skiing, fashion, and sustainability, they combine a love of the outdoors with a mission to change consumer habits and reduce waste in the industry.

Anna Smoothy on LinkedIn: https://www.linkedin.com/in/anna-smoothy/

Anders Bergenstrand on LinkedIn: https://www.linkedin.com/in/anders-bergenstrand/

🌍 About HappyPorch

HappyPorch is a purpose-driven software engineering consultancy focused on the circular economy.

Learn more: https://www.happyporch.com

💌 Subscribe to HappyPorch Circular News

HappyPorch Circular News is our monthly newsletter for people working in and around the circular economy and technology.

Subscribe at: https://www.happyporch.com/newsletter/

🎙 Explore the Circular Economy Podcasts Guide

We’ve created something new: the Circular Economy Podcasts Guide. After 9 seasons of HappyPorch Radio and years of discovering other brilliant shows on circularity, we realised the podcast space needed a central, searchable place to explore the best voices in circular innovation.

Browse at: https://circulareconomypodcasts.guide/

▶️ Listen and subscribe:

Stream this episode on Apple Podcasts, Spotify, Deezer, iHeart, Pocket Casts — or wherever you get your podcasts.

Visit