Chetan contributed to the openfoodfacts/smooth-app repository by developing Discount Types Management within the Pricing System, enhancing both user experience and data robustness. He introduced a reusable dropdown component for selecting discount types, refactored UI elements for maintainability, and ensured proper localization support. Using Dart and Flutter, Chetan improved the reliability of price addition by updating barcode data parsing to handle diverse formats, addressing a critical bug. His work focused on scalable UI/UX design and robust data handling, laying a foundation for future pricing features while reducing code duplication and supporting clear, localized discount options for mobile app users.