Moo Jun Jie UI/UX Designer
Notes · 2026

Notes on working with AI, less polished on purpose.

Short write-ups of things I build with Claude: what I asked for, what went wrong, and the decisions that stayed with me. The case studies show finished work. These show how I work with the tools I now use every day.

  1. Note 0228 October 2026 An iPhone app with one user, built by sessions that forget Claude wrote every line; I don’t read Dart. The roadmap that let each new session carry on, the data I refused to lose, and the four places I overruled the design system. Mobile app · Handoff · Design review Three screens of the Worth iPhone app side by side: the wishlist, the home screen with a total value of RM 13,349, and an item page whose largest number is 6.61 RM per day.
  2. Note 0128 October 2026 A keyboard driver, rebuilt for the browser A first version that looked finished and never worked, a second built on evidence, and the scope and safety calls that stayed mine. Open source, with a demo you can try. Hardware UI · Scope · Open source The keyboard driver’s Lighting page, with an effect marked Draft, not applied.
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Nudge, MyXR Lab and Coffee Je.