Built for me

Because the tool in my head rarely exists the way I want it. A terminal chief of staff, a second brain, and a small fleet of apps for the parts of my life I wanted to see clearly: places I have been, my health, my money. Most are Expo and Supabase; all are mine.

• byhand: the classic engineering books, learned by building. The one I opened up to everyone.
• Dev Pipeline: an autonomous dev assistant, built at work, now in my team's hands.
• Personal Assistant: a terminal chief of staff that runs my day.
• Second Brain: an Obsidian knowledge graph over the assistant.
• Memory Map: a vintage atlas travel log of everywhere I have been.
• HealthHub: sleep, workouts, diet, energy at a glance.
• FinanceHub: net worth, plus behavioural nudges on how I spend.

Every one started small, personal, and mine, built to see one part of my life more clearly. When I want a tool, I make it instead of buying it. Once in a while one of them turns out to be useful to other people too, and that is how byhand happened.