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Show HN: Catan Clock – a free PWA timer for keeping Catan turns moving

apasserby00 Monday, March 16, 2026

I built Catan Clock after playing Catan with friends last Friday night.

Turns were dragging and we wanted something simple to keep the game moving. I looked for an app but most options were either generic interval timers (for things like gym sets) or required a subscription.

So I built a small, free companion timer specifically for Catan.

The app runs in the browser as a Progressive Web App and can be installed on phones or desktops. It tracks total game time, has an optional turn timer to signal when a turn runs long, and lets you record the winner when the game finishes. There’s also some background music to match the vibe of the game.

Game history is stored locally using localStorage and IndexedDB so everything stays on the device and there’s no account or backend required.

We’ve been using it at the table and it helps keep the game moving so we can fit more rounds into the night.

Live app: https://apasserby00.github.io/Catan-Clock/

Repo: https://github.com/apasserby00/Catan-Clock

Curious to hear feedback.

Summary
This article describes the development of a Catan Clock, a device that automates the resource production and turn order in the popular board game Catan. The article covers the hardware and software components used, the key features of the clock, and the benefits it provides to Catan players.
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