Projects

Apps, products, systems, and technical explorations.

A concise index of public apps, products, systems, and technical explorations.

iPhone + Apple Watch App

膳环 (MacroHalo)

A local-first food and nutrition logging app for iPhone and Apple Watch, with photo-based AI nutrition estimates, reviewed meal records, CSV backup, widgets, Live Activities, and bilingual App Store support pages.

  • iOS
  • Apple Watch
  • Local-first
  • AI nutrition

iPhone App

Medication Tracker / 药不能停

A private, on-device medication check-in and reminder app for iPhone, with local records, daily reminders, and bilingual support and privacy guidance.

  • iPhone
  • Local-first
  • Health tooling

Reusable Prompt System

Prompt Library

A lightweight library of reusable prompts for engineering, writing, and systems thinking, designed to stay easy to browse, copy, and maintain.

  • Prompt design
  • AI workflows
  • Knowledge systems

Generic Recommendation Engine

Apollo 2

A domain-agnostic recommendation chatbot powered by FastAPI and Next.js. Its catalog JSON, domain adapters, scoring weights, and display configuration can be swapped to recommend credit cards, retail products, services, or other item types without changing the engine core.

  • FastAPI
  • Next.js
  • Pydantic
  • Recommendation systems