Wallapop Drives 36% YoY Lister Growth with Jampp

About Wallapop

Wallapop is a leading free app for buying and selling second-hand products, championing a sustainable approach to consumption through circular economy principles and fair trade.

The Challenge

With Spain's second-hand products market valued at over $84 billion in 2025 [1], marketplace competition is fiercer than ever. Wallapop entered 2026 facing headwinds beyond typical seasonality: both January and February saw new listings decline year-over-year alongside rising cost-per-lister, signaling the need for a more resilient acquisition strategy.

"To scale a healthy marketplace ecosystem, we needed a growth strategy that drove incremental listings. Jampp’s creative execution was key for us. The combination of clear tutorial ads and carousels successfully lowered the friction for new users to list their first item and step into the platform as active sellers." —Julia Zucchino, Marketing Performance at Wallapop

The solution

Wallapop partnered with Jampp for a User Acquisition strategy anchored by advanced creative assets designed to inspire first-time listings.

• Advanced Juno Modeling: Leveraged Jampp's Juno AI-powered tech stack to evaluate consumer potential in real time, focusing on cohorts with the highest probability of completing a listing..
• Dynamic budget allocation: Used the March recovery as a proof point to confidently scale spend in June and July, shifting budget toward the highest-yield conversion windows.
• Impact-Driven Creative Strategy: Built a variety of advanced creative formats (from Tutorial to Carousel ads) tailored to high-intent moments in the Wallapop user journey.

Key success metrics

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References

[1] MMR Statistics, 2026.

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