Delivered a comprehensive Polish localization for the Metrolist Android application, enabling a fully translated user interface and improving accessibility for Polish-speaking users. Leveraging XML and Weblate, the developer translated all UI strings, playlist management features, and error messages, achieving 100% coverage across two commits. This work established a scalable localization workflow, streamlining future internationalization efforts for the repository. By focusing on i18n, localization, and translation, the developer removed language barriers and enhanced user onboarding for a broader audience. No bugs were fixed during this period, as the primary focus was on delivering clear business value through targeted feature development.