Seán McNamara

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Productivity10 Aug 202615 min readMy Opinionated MacBook SetupTwenty changes, written down once, so the next machine takes an hour instead of a week.
15 min readProgramming7 Apr 20266 min readBuilding Chinwag: Local-First WhatsApp Chat Analysis in GoMessy conversational data made legible without any of it leaving the machine.
6 min readAI1 Apr 20263 min readWhat Are World Models in AI?A world model is a prediction of what happens next, not a picture of what is.
3 min read
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Things I've built

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Go · 2026Chinwag — A local-first WhatsApp chat analyzer in Go that turns exports into interactive insights about tone, topics, timing, and conversation dynamics.
Swift · 2026Steady Days — A SwiftUI iOS app for tracking habit-breaking streaks, daily check-ins, and recovery progress, with support for quitting, reducing, or pausing any habit.
TypeScript · 2026MealShelf — A clean, personal recipe book app with AI-powered import, cook mode, and public profiles, built on AWS Amplify Gen 2.