In November 2025, Aasr4r4 contributed to the lichess-org/mobile repository by delivering a targeted feature and dependency upgrade for the mobile client. Using Dart and Flutter, they implemented a new Purple Board Theme, expanding user customization options and enhancing the app’s personalization capabilities. Their work included upgrading the Chessground dependency to version 7.3.0, which introduced new piece styles and addressed alignment issues, resulting in improved UI consistency and rendering stability. Although the scope was focused, the changes directly supported user engagement and platform maintainability, demonstrating a solid grasp of mobile development and effective integration of third-party libraries.