Nijia is a tool designed to assist Mac users in comprehending disk space usage and making informed decisions regarding cleanup. It consists of five key modules: Smart Cleanup, Space Analysis, Dev Workspaces, AI Desk Tidy, and System Watch. Developers utilizing this software can examine repositories, Git worktrees, build artifacts, and caches while considering the context of their workspace. The application proposes methods for organizing files for user evaluation. Moreover, storage assessments and organization suggestions are conducted locally on the Mac, eliminating the need for an external AI account or API key. Users must review and confirm selected cleanup actions before files are moved to the Trash, and there's a distinct confirmation process for emptying the Trash. Furthermore, Nijia is a paid application, offering monthly, annual, and one-time Pro licenses, each of which can accommodate up to two Macs, ensuring flexibility for various user needs. With its comprehensive approach to disk management, Nijia aims to enhance the overall user experience on Mac systems.