William
Ferreira Andrén
Some personal projects
Is It Spiking?
My own blood sugar, live and in public, next to photos of whatever I just ate. A sensor on my arm reports every minute, Claude writes a running commentary on the curve, and strangers can react to the meals and argue with each other underneath.
Live data
Supabase
Vanilla JS
Network CRM
A tool for actually remembering a network of about 2,700 people — who they are, how we met, what we last spoke about, and who I have been neglecting. It runs entirely on my own laptop and nothing about anyone else leaves it, which is why there is nothing here to click.
Python
SQLite
Local-first
Sauna Simulator
What heat actually does to your core temperature. Set the temperature, the humidity and how long you sit there, and it models how far your body drifts from 37°C and how long it takes to come back down.
Physiology
Chart.js
Single file