I build tools for my own problems first — and keep running what I ship.
My bilibili watchlist kept growing; notes never got made. This Obsidian dsh skill turns any video link into a structured note — subtitles only, no video downloads.
Biology demands heavy memorization and it was my weakest exam subject. So I built my own review system — Streamlit + SQLite, spaced repetition, weekly review grid — and it is in real use now.
Chengdu's old streets are great to walk but hard to route. City Walk turns them into checkpoint runs — 7 routes, 42 real landmarks, and a verifier that checks actual GPS movement (distance, speed, radius). Designed the system, built with AI tooling.
Senior high school boarder — weekends are my build window.
I'm a senior-year student in Chengdu, China, boarding at school with no electronic devices on weekdays. Every project here was designed on paper during the week and built in weekend windows. Constraints are my default working condition, not an excuse.
The biology system above is my longest-running build — it reviews me every weekend and keeps me exam-ready.