Viniou is a web and mobile application created by Arnaud Cariou, designed to help wine enthusiasts efficiently manage their wine collections by tracking, organizing, and optimizing wine purchases and aging processes. The app addresses the challenge of keeping track of cellar contents, restocking needs, and shared bottles. Viniou utilizes Rollbar for real-time error monitoring across its .NET backend and React Native mobile app to ensure reliability and user satisfaction, particularly in handling personal data. The decision to use Rollbar was influenced by its ease of setup, user-friendly interface, and seamless integration into the workflow, along with its smart error grouping, detailed reports, and contextual alerts that enhance the development process.