I built an app called WhatCode.

It lets you use OpenCode, directly from your iPhone.

The agent keeps running on your machine. Your phone becomes the interface.

Why I built it

OpenCode is where I do most of my thinking. Planning features, reviewing code, working through bugs.

The problem: it only existed at my desk. The second I walked out, I was cut off.

Opening a browser on my phone was painful. Slow, awkward, no real keyboard support. It never felt like a proper tool.

I wanted something native. So I built it.

How it works

WhatCode connects to your machine via a lightweight daemon that runs alongside OpenCode.

The daemon starts OpenCode, exposes it on your local network, and prints a QR code in the terminal. You scan it from the app and you're in.

From that point on you can browse your projects, read and send messages, and get a notification the moment the agent finishes its work.

What you get

Browse and switch between all your OpenCode projects.…