In recent times React has attracted quite a lot of attention despite its poor performance on mobile. The cure for this problem did not come from a big corporation, but instead originated within the open-source community. The personal project Inferno flourished into a whole community, which created a serious competitor to React. This library promises an improved performance, nearly fully-compatible API, and a more focused solution than React. Why do we want to migrate away from React? What obstacles have to be faced in the migration? Is the migration worth the efforts? In this talk we will hear the story of a large cross-platform mobile application that was migrated from React to Inferno.