đŸ«–Hydrospanners

Modular side projects and games that stay lightweight to host. Built with the Next.js App Router, Tailwind CSS, and TypeScript.

4 initiatives in flight

Experiments

Utility corners and prototype labs

This is the staging area for tools, helpers, and playgrounds that will eventually grow into full applications. Everything starts static so we only opt into dynamic features when the idea proves itself.

Static-first

Keep runtimes cheap until the experiment lands.

Fast feedback

Ship iteratively and watch the signal.

Safe fallback

Always offer a manual path if tools fail.

Featured

Available now

BolÄnekalkyl

Interactive mortgage cost curve based on Swedish amortization rules with a live down-payment graph.

mortgagevisualization