Launch knowing it sells.
Biface Studio tests your product with real people, then designs what they actually want to buy.
At some point, every founder has to answer one question: will people actually buy this?
We know that uncertainty is the worst part. We built our entire process to eliminate it.
Test. Analyse. Design.
We test your product with real people before you spend on production. Then we use what we learn to design what they actually want to buy.
Test. Analyse. Design.
In that order, every time.
About Karim – The Founder Behind Biface Studio
His passion is helping founders bring physical products to market with clarity and confidence.
He brings extensive hands-on experience to his clients’ projects. He has contributed to ergonomic watch straps for Panerai, variable-correction glasses at Laclarée, and a patented domestic security device for High’tems Group. He has also led prototyping and user testing in university FabLabs, supporting students, researchers, and startups in turning early ideas into functional, market-ready solutions.
Karim combines strong technical and design expertise with a calm, structured process. His formal training includes an M2 in Innovation Design Engineering from Arts et Métiers Paris and a DSAA in Product, Uses and Services designfrom La Martinière Diderot Lyon.
From genius idea to major retailer in twelve months.
That’s what happens when you test before you build.
Recycl’Ace had an innovative material, rubber from recycled tennis balls, and a plan to launch five products at once. Before any tooling, we put one concept in front of actual tennis players.
90% said yes.
With less than €50 in prototyping, the bottle is now on Intersport shelves.
That experience shaped everything about how we work. The informal test is what saved the project. So we built a process to do it properly, with unbiased testers, a structured analysis, and a design brief built from what they actually said.
“From concept to finished product, accounting for all design and technical constraints.” — Recycl’Ace
Not sure where you stand?
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