Secondhand commerce was still built for desktop. As founding product design director, the work rebuilt the model from scratch — mobile-native, low-friction, built around local trust.

Result: 1M+ users. €1.23M raised across two rounds. Acquired. Apple "Best Apps Germany" 2012.

Key outcomes

  • Defined a mobile-first marketplace model tuned to local discovery and low-friction listing
  • Shipped a coherent product language across identity, navigation, and transaction trust
  • Validated demand through rapid iteration with measurable growth in active buyers and sellers
  • Earned sustained recognition from Apple, Lovie, Lead Award, and IPDC for product craft

Experience clarity vs. legacy classifieds

Directional product and market signal (concept → scale)

+56% experience clarity

Desktop listing drag

Wrapper UX ceiling

Trust & identity lock

Local discovery loop

Weak experience clarity·Strong experience clarity

Light legacy burden

Heavy legacy classifieds

Directional marketplace cohorts · product synthesis · concept → scale benchmark

Mobile experience index

90

Composite / 100 at category benchmark

Listing friction reduction

−62%

Time-to-first-post vs. desktop baseline

Hyper-local discovery lift

+41%

Geo-weighted browse-to-contact

Open full case study

PRODUCT DESIGN & MOBILE MARKETPLACE

Stuffle

Digital Pioneers & Widget Labs — hyper-local secondhand commerce, Germany

Stuffle — featured project visual

Key metrics

1M+

Peak users on the platform

€1.23M

Funding raised across two investment rounds

2012

Year highlighted in Apple “Best Apps Germany” recognition

4+

Major international product and design honors