Apps
Products I've built where the AI is the product — not a feature bolted on the side. Each one closes a full loop: capture what the user does, turn it into feedback, and adapt what comes next.
Mingdao
AI Mandarin tutor
An AI Mandarin-learning PWA. Speak, get graded AI replies, per-character pronunciation scoring, generated graded readings, and dictionary lookups — every action writes back into one adaptive learner model with FSRS spaced repetition.
Kaoshi
AI learning system
An AI education platform that generates curriculum-driven worksheets, auto-grades submissions with an answer-key + OCR pipeline, tracks topic mastery, and turns results into parent dashboards, recommendations, and self-study plans.
Exocortex
Multi-agent personal AI OS
A personal AI operating system — 21 named agents with persistent memory, orchestrated autonomously overnight. Prosthetic executive function at system scale, built on Claude, Codex, tmux sessions, and markdown.