NoteStack is a Substack analytics Chrome extension: 235 installs, 68% install-to-use conversion, live on the Chrome Web Store — all fully organic, zero marketing done yet. Full product built: analytics dashboard, competitor analysis, best-time insights, plus a Pro tier ($8–$12/mo) — AI Ghostwriter that writes Notes in the user's voice, bulk scheduler, and sponsor media-kit generator. Working licensing infrastructure. Turnkey for a buyer to grow. Solo-built, clean codebase, full handover included