Download

Albireus on every device.

The web app opens instantly; install the app for offline use, local folders and the desktop AI assistant.

Available
WindowsDesktop
Everything, plus local folders and the AI assistant on your computer.
Version
0.2.7
Requirements
Windows 10 or 11 (64-bit)Installer (.exe)
Download for Windows
Available
macOSDesktop
Everything, plus local folders and the AI assistant on your Mac.
Version
0.2.7
Requirements
macOS 12 or later (Apple silicon and Intel)Disk image (.dmg), notarized by Apple
Download for macOS
Available
AndroidPhone and tablet
Record, handwrite and check your docs on the go.
Version
1.1.19
Requirements
Android 7.0 or laterPhones and tablets
Download for Android
Coming soon
iOS / iPadOSiPhone and iPad
Designed for touch and stylus — in the works.
Requirements
Use the web app until it ships
No install
WebBrowser
Nothing to install; you can also install it as an app.
Requirements
Latest Chrome, Edge, Safari or Firefox

Claude Code, Codex and Gemini CLI run in the desktop app's AI assistant.

FAQ

Questions?

Can't find it here? The full FAQ page has more.

The web app runs in any browser; Windows, macOS and Android apps are available to download. iOS/iPadOS is coming soon.

Yes. Synced documents open and stay editable offline, and sync automatically when you reconnect.

Only after you pick Claude Code, Codex or Gemini CLI and choose a folder and permission mode. Every change shows a diff and can be undone.

You can start for free with no payment up front. See the pricing page for plans.

Free to start, no payment needed.