Black Cat Notes

I’m Kuroneko — building in public. After years working with Japanese companies across manufacturing and IVD for the China market, I pivoted into AI and indie making to ship practical, calm software.

Here I share short takes on AI/product, notes from hands‑on work, and experiments in AI productization, iOS apps & small games, Rust tools, and Python data plumbing. Learn more on my About page.

On the side, I run a visual branding experiment — anime & aesthetic illustration curated at art.kuroneko-cmd.dev.

Recent Posts

• GPT-5.6 Luna Is 80% Cheaper. GLM-5.2 Is Now Stuck in the Middle.

  31 Jul, 2026

  OpenAI’s Luna price cut resets low-cost AI economics, squeezing GLM-5.2 while leaving Kimi K3 and DeepSeek with clearer positions.

• TravelBrain: an offline travel planner built from collected inspirations

  Updated: 21 Jul, 2026

  Why I built TravelBrain as an offline travel planner where you collect ideas into an inbox, drag them onto a timeline, and build trips like LEGO — all without syncing to the cloud.

• TravelBrain 2.0: Smart Import, Native iPad, and Dark Mode

  21 Jul, 2026

  TravelBrain 2.0 adds private on-device Smart Import, a review-before-save workflow, a native adaptive iPad layout, and System, Light, and Dark appearances.

• My Pinterest Experiment: From Stock Platforms to Owning an Audience

  16 Jul, 2026

  Why a developer bet on Pinterest as a visual search engine — and how an engineered publishing pipeline reached 1M+ impressions in 30 days.