"How We Created the Winning App"

In this session, Yuuki Kotou will walk us through how he built his VibeSprint-winning app, Mimamori, and the decisions behind it. Rather than starting with detailed requirement documents or hand-written code, Yuuki began by consulting with AI, shaping the idea through conversation, and iterating quickly inside Base44. We’ll cover:How he planned with AI before buildingHow he chose a real-world problem from his own fieldHow he used sample data to test, adjust, clear, and retest the appHow the core product came together in roughly three hours on Day 1How Base44’s suggestions helped the product evolve on Day 2Where AI was especially effective — and where human judgment still matteredThe practical lessons and tips he took away from the experienceThis session will be primarily in Japanese.