树清单：无限子清单

As your plans accumulate, they can grow increasingly complex. Regular list apps struggle to clearly show the relationships between different plans, since some plans are sub-plans of others—something a standard flat list can't express well. Tree-structured plan management is perfect for this. Tree List is a simple, user-friendly list app that uses a tree structure to manage your to-dos and plans for easy operation and organization. It supports iOS (download from the App Store), Windows/macOS/Linux (download from the official website). Official website: https://xopenbeta.com/project/%E4%B8%80%E6%A0%91%E6%B8%85%E5%8D%95