The author explored various personal knowledge management (PKM) tools on Android and initially avoided Obsidian due to dissatisfaction with its earlier mobile app versions, which felt cramped and outdated. However, after revisiting the redesigned Obsidian app, they appreciated its modern user interface and improved usability. Obsidian's use of plain Markdown files allows for better file management and future-proofing of notes. The app supports both quick capture of ideas and deeper exploration through linking notes and creating a cohesive knowledge base. Features like Quick Note, Daily Note widget, and Graph View enhance its functionality. Data syncing requires some setup, with options for Obsidian Sync or third-party solutions. Ultimately, Obsidian stands out as a customizable and long-lasting PKM tool for the author’s workflow.