A free notes app that works with your AI subscription.

Built to be fast
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No account required
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Works offline
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P2P sync
Bring your notes from Evernote, Google Docs, Notion, Markdown

Download Koru freemacOS More downloads

Drag to compare light and dark

The same Koru app in its dark theme, with the same document and AI chat in the same place.

The Koru app in its light theme: a Customer interviews document with notes from three calls, open beside an AI chat that answers what to ship first from those notes.

AI and developers

AI on your terms.

Koru doesn’t lock you into one AI. Run the agents you already use as tabs in Koru, and let them work on your documents over MCP.

Claude
Codex
Gemini
Grok
GitHub Copilot
OpenCode
Antigravity
Kimi
Qwen Code

Claude Code, a coding agent, in the Koru app two ways: in its own terminal UI in a tab on the left, and through Koru's chat with Claude picked on the right. — Claude Code, one of the agents you can run in Koru: in its own terminal UI, or through Koru's chat.

Run your agents as tabs
Open Claude, Codex or any supported agent as a tab in Koru, beside the documents it is working on.
Connect over MCP
Your agents read and edit your workspace through Koru’s local MCP server.
Open source
Koru’s code is public on GitHub. Read it, build it yourself, and open an issue or a pull request.

Explore Koru for developers →

Voice

Speak. Koru listens locally.

Capture thoughts using voice without sending your audio to the cloud. Koru Voice runs speech recognition on your device and works in Koru and your other apps, for free.

On your device
Your audio never goes to the cloud.
In your other apps
Dictate anywhere you can type.
Free
Part of Koru, with no subscription.

Devices

Koru goes wherever you do.

Use native Koru apps on Windows, macOS and Linux. iOS and Android apps are coming soon.

The Lisbon trip note in Koru on Windows — Mobile and desktop

The same note in Koru on a phone — Mobile and desktop

Peer-to-peer sync
Sync directly between your devices, end-to-end encrypted, without requiring Koru Cloud.
Profiles
Create profiles for work, school, personal life or different roles. Each profile can contain multiple independent workspaces.
Always-available Cloud sync
Koru Cloud adds an always-online copy of your workspaces for sync, backup and access across devices.

Bring your work with you.

Moving to Koru shouldn’t mean starting over.

See import options →Koru as an Evernote alternative →

Roadmap

Koru is just getting started.

We’re building Koru into a complete private workspace for capturing ideas, planning work, collaborating and creating.

What we have released so far: we release a nightly version almost every day and a stable version every week. See releases.

Plan
Tasks, lists and reminders · In nightlyCalendar integration · Planned
AI
Delegated agent runs · In nightlyAgent orchestration · In nightly
Koru Cloud
EU Cloud region (Amsterdam) · In developmentCloud API and MCP · Available now