Compound

Summary

Notes lived in many places. Ideas never connected. That was the problem.

Every note app pushes cloud sync, shared folders, and accounts. Compound strips that back. One place, your device, no signup.

Drop in an idea. AI tags it. It lands in a category. Local-first means offline works and your data never leaves. The structure builds as you add.

Knowledge ends up organized instead of everywhere.

Core Features

• Local-first storage with offline support
• AI-powered topic classification for incoming ideas
• Structured notes across custom categories
• Simple capture flow that does not get in the way

Data & Storage

Compound stores everything locally on your device. No cloud sync by default. No account required to start.

The goal is not to add more integrations. It is to give you a focused place to think without worrying about where your notes live.

Design Principles

• Local-first. Your data stays on your device
• Fast capture. Minimal friction when adding ideas
• Privacy focused. Only the minimum necessary data is stored

Problem → Insight → Action

• Problem: Notes and ideas pile up in random places. Most tools add sync, accounts, and overhead.
• Insight: Capture matters more than storage. Small daily additions compound into a useful knowledge base when they are structured.
• Action: Compound gives you one place to capture, classify, and organize ideas, without the cloud.

How It Works

1. Add an idea or note
2. AI suggests topics and categories
3. Store it locally, works offline
4. Browse and build on your knowledge base over time

Tech Stack

• Next.js with React and TypeScript
• Vercel for hosting
• LocalStorage and IndexedDB for local-first persistence
• OpenAI API