The first operating system for fundamental investors. Pin your research directly onto the K-line chart. Revisit any thesis and see exactly what the price was—and whether your logic held up. Turn every decision into a data point for better investing. Key features: ✅ Visual Recall: Pin your journal entries directly onto the K-Line chart. ✅ Automated Data: Real-time prices for stocks ✅ Notion-Grade Editor: A rich-text writing experience with Slash commands (/) and drag-and-drop blocks.