Hoopooh is a childcare communication app used by parents and daycare centres. In a two-week sprint, I designed a new second-hand marketplace feature that enables parents to buy and sell children’s items directly inside the app.
Daycare centres in Germany operate on tight budgets and cannot justify paying for advanced software. Hoopooh’s strategy was to monetise via the parent user base instead. The challenge was to integrate a full marketplace into an existing app without disrupting the core childcare communication experience.
Daycare centres in Germany operate on tight budgets and cannot justify paying for advanced software. Hoopooh’s strategy was to monetise via the parent user base instead. The challenge was to integrate a full marketplace into an existing app without disrupting the core childcare communication experience.
Parents are highly price-sensitive.
Sustainability and circularity resonate strongly.
Parents trust apps embedded in existing childcare workflows.
Too many options and fields in the listing flow quickly overwhelmed users.
Integrate visually with the existing Hoopooh UI.
Keep flows simple and mobile-first.
Reduce cognitive load during listing and browsing.
Prioritise trust and safety between buyers and sellers.
Support both buyer and seller use cases equally.
I designed flows for browsing the marketplace, filtering items, viewing a product, contacting the seller, completing a purchase, creating and editing listings, and managing favourites. Navigation was kept minimal and familiar to the original app structure.
High-fidelity screens included the marketplace feed, product detail pages, listing creation steps, chat between buyer and seller, and profile-level listing management. All visual decisions followed the Hoopooh design language for a seamless experience.
The concept was validated in user testing and won Ironhack’s “Most Creative Solution” award. It demonstrated that second-hand commerce is viable inside a childcare app and provided a potential monetisation path without undermining the core communication value.
Re-creating the design language required careful analysis; early prototypes offered too many options and settings; balancing feature richness with simplicity was critical under a tight two-week sprint timeline.
I learned how to extend an existing product’s visual language, design e-commerce flows within a non-commerce context, and quickly test and iterate on feature ideas with real users under significant time pressure.
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