I'm a data analyst who builds the tools I analyze with. Since 2019 I've worked as an analyst and coach in competitive Clash Royale; today I build the opponent-analysis platform that backs deck picks for Tier-1 CRL players preparing for the 2026 World Finals.
What I actually do: design the data model and the analysis logic, then build it AI-assisted (Lovable, Claude Code) and operate what I ship.
- 🔧 rukawaanalytics.com - portfolio, live pipeline numbers, case studies
- 📄 From Battle Log to Set Decision - how 1,000 recent battles become a deck-slot prediction
- ⚡ Also live: a German electricity price dashboard and an F1 race-strategy tool, both on real public data
- 📼 agentvcr: replays for AI coding
sessions. Turns a Claude Code, Codex, Cursor, Gemini CLI or OpenCode session
into one HTML file or a link, secrets masked on your machine.
npx agentvcr-cli, or watch an example - 📈 Prognosebuch: probabilistic day-ahead electricity price forecasts for Germany, published before the auction and scored in public, misses included
- 🚆 Letzte-Bahn: how well every place is connected by bus and train, as travel times to doctor, supermarket, school and hospital
- 🧭 Themenkompass: who researches what at a university, how actively and with whom, built on OpenAlex
Reach me at to_jacob@me.com or on X.