Firstleaf is a mobile app that delivers personalized wine recommendations by analyzing the chemical profiles of nearly a million wines. Not only does it serve as a tasting assistant, but it also helps users quickly identify and choose wines that suit their tastes in restaurants, stores, or at home. Users create their taste profiles by answering a few questions, then simply use the in-app camera feature to capture photos of menus, shelves, or wine labels, allowing Firstleaf to recommend the best options. Additionally, users' ratings after tasting wines help the app better understand their preferences and continuously improve recommendation quality. Firstleaf promises an ad-free, completely free experience and does not sell user data.