AI-powered personalized stories for kids and families.

Yuna had a real AI engine and a working product, but the retention numbers told one story: strong installs, sharp drop-off. D1 sat at 21.4%, D14 at 3%. The team's hypothesis was that the experience layer was what would bring people back daily. The challenge was to focus on initiatives that were both impactful and feasible — shipping weekly across two markets (US and BR) with very different behavior patterns. Over 16 months with Yuna, we redesigned the onboarding and reading experience, added a fresh-content exploration tab, and layered in motion, sound, haptics, and illustration. With a small team moving fast, the constant risk was shipping shallow....

See the full case study: www.barbararezende.com/work/yuna