Worked on the luanti-org/luanti repository to deliver complete Czech language localization for the Minetest Android app, raising UI translation coverage from 82.6% to 100%. Focused on software internationalization and localization, the work involved translating and finalizing all user interface strings using PO and XML formats. Leveraged Weblate to manage the translation workflow, ensuring accuracy and consistency across the app. The process included careful versioning and commit traceability, resulting in a ready-for-release localization update. This effort improved accessibility for Czech-speaking users and demonstrated a thorough approach to Android development, translation management, and collaborative localization tooling integration.