AI-powered, local-first Eisenhower Matrix. Sumi is a private task manager for deep focus. No accounts, no cloud, no subscriptions. Your data stays on your device. Features: Smart AI: Use your API key to auto-sort tasks instantly. The Matrix: Drag-and-drop quadrants to prioritize focus. Privacy: 100% offline. No tracking. Your data is yours. Insights: Daily reflection and time visualization. Universal: Full EN/JP support. Simple and permanent like ink (Sumi).