I Built a Local AI Agent That Actually Remembers You — Here's How the River Algorithm Works

The Vision: A Personal AI That Lives on Your Device I believe the future of AI isn't in the cloud — it's in your pocket. Imagine a personal AI running on your phone or watch that truly knows you: your habits, your preferences, your relationships, how your life is changing. It processes everything locally first, only reaching out to cloud models when it genuinely can't handle a task on its own. Your data never leaves your device unless absolutely necessary. It grows with you, not for a platform's benefit. That's what I'm building toward. But to get there, I needed to solve a fundamental problem first. The Problem Nobody Talks About You've been talking to ChatGPT for two years. Thousands of conversations. You've told it about your job, your family, your fears, your goals. Then you try Claude. Fresh start. It knows nothing. Back to ChatGPT — it "remembers" you with a flat list of bullet points: "User is a developer. User likes coffee." That's it. Two years of conversations reduced to a st