A personal knowledge organizer for Mac & iPhone, with Claude AI as your thinking partner. π² Thought Trees β Break topics into sub-themes. Claude suggests branches, you shape the structure. π‘ Antenna β Claude monitors your topics and summarizes what's new. π¬ Tree Chat β Chat with Claude, grounded in your own knowledge tree. π No cloud. No lock-in. Your data stays on your device. Free with your Claude API key until June 30.