LifeArc
David Koehler David Koehler

LifeArc

Change one habit — sleep, stress, diet, movement — and watch your health score and estimated life expectancy move in real time. Built on published research from large population studies.

Built with Cursor and Claude Code.

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MindSim
David Koehler David Koehler

MindSim

Toggle your daily habits and watch an animated orb reflect how they shape an estimated wellbeing score, in real time. Grounded in published research on mood, stress and flourishing.

Built with Cursor and Claude Code.

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Chat EQ
David Koehler David Koehler

Chat EQ

A mixing board for how AI talks to you. Seven sliders — length, method, stance, register, structure, creativity, model size — each running between two honest extremes, from one-liner to dissertation, brutal to supportive, literal to unhinged. Set them by feel, or start from a preset like Rubber Duck or Drill Sergeant, and Chat EQ compiles your settings into a plain-language directive you can paste into any chat.

Built with Claude Code

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