What can you build?

Most software is built once, for everyone. Möbius lets you describe what you want and builds it in front of you. Over time it picks up on your preferences and interests to be more helpful, and your data never leaves a server you control.

Some things we've built:

• News aggregator — runs on a schedule, searches the web, filters stories based on preferences that evolve over time
• Stock market dashboard — for a local exchange with no public API; the agent figured out how to scrape it
• Finance tool — upload statements, categorize spending, compute taxes from your phone
• Period tracker — built around how you actually want to use one
• Learning companion — uses AI to build a curriculum around any topic, with spaced repetition that adjusts as you improve
• Drum machine — turns voice samples into beats

Your health data, your finances, your habits, all private by default.

When you ask for something, the agent builds it as a small app right inside the chat, without reloading the page. Each app can store data, run on a schedule, fetch from the web, and use AI on its own.

<p align="center"> <img src="assets/screenshots/apps-cycle.gif" width="280" alt="A few of the apps Möbius has built — ISS tracker, habit log, HN dashboard, earthquake map, flashcards deck" /> </p>

_{A few of the apps Möbius has built me in chat — an ISS tracker, a Brazil trip planner, a daily news digest, a Hacker News dashboard, a live earthquake monitor, a habit tracker, and a drum machine. Each was a single prompt; the agent wrote the JSX, compiled it, mounted it, and the app lives in the same shell the chat does.}

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<a href="https://railway.com/deploy/mobius?referralCode=5TQuhr"><img src="https://railway.com/button.svg" alt="Deploy on Railway" height="28"></a>

Click Deploy Now, log in to Railway, and deploy. New accounts get a free month, then around $5/month for hosting. Once the deploy finishes, go to Settings → Networking → Generate Domain. You'll get a URL like xxx.up.railway.app. Open it, and the setup wizard walks you through creating your account and connecting Codex (free ChatGPT account, limited usage) or Claude.

Bookmark https://xxx.up.railway.app/recover. If the UI ever breaks, that's where you fix it.

If you're logging in on your phone, save to home screen for the best experience.

To update, go to the same deployment's Settings → Source → Check for updates. Railway pulls the latest image and redeploys — chats, apps, credentials, and the agent's experience all survive.

Deploy self-hosted

Requirements: a Linux server with Docker, a domain name pointing to it, and either a free ChatGPT account (Codex on the free tier has limited usage) or a Claude Code subscription.

git clone https://github.com/hamzamerzic/mobius.git
cd mobius
cp .env.example .env
sed -i 's/^DOMAIN=.*/DOMAIN=your-domain.com/' .env
docker compose up -d

Caddy handles HTTPS automatically. Visit https://your-domain.com and the setup wizard takes it from there. On a headless server, copy the auth URL to a local browser to complete sign-in.

Bookmark https://your-domain.com/recover. If the UI ever breaks, that's where you fix it.

To update: git pull && docker compose up -d --build. Everything in /data survives rebuilds.