Projects

Case studies

What I built, how it works, and what I'd change. Every project links to its source.

In progress 2026

Hearthstead

A gamified chore planner for a whole household. Chores sync live between phones, earn XP when they're done, and the app keeps working without a connection.

Live sync between phones, with full offline support
Native Android and iOS builds from one codebase
Unit tests plus tests for the Firestore security rules

Angular 20
TypeScript
Firebase
Firestore
Capacitor
Bootstrap 5

In progress 2026

johnheim.dev

This site. Static pages served from Cloudflare's edge, plus a small Worker that answers curl, checks for spam and stores contact messages in a SQL database.

Astro
TypeScript
Cloudflare Workers
D1 (SQLite)
Turnstile

Shipped 2025

Scary Monkey portfolio

A 3D art portfolio with an interactive Three.js background, packaged in Docker and deployed to a home server by a self-hosted GitHub Actions runner.

Vite
Tailwind CSS
Three.js
Docker Compose
Nginx
GitHub Actions