Download Cobbleday

The desktop app, version 0.5.0, for macOS and Linux. It keeps working offline and syncs when you're back online.

Download for macOS 13.7 MB Download for Linux (.deb) 7.3 MB

There's no Windows or phone app yet. Cobbleday works in any browser in the meantime.

All downloads

macOS

One app for Apple silicon and Intel Macs.

.dmg 13.7 MB

Or the app on its own: .app.zip (13.6 MB)

Linux: .deb

For Ubuntu, Debian and their relatives (64-bit Intel/AMD).

.deb 7.3 MB

Linux: AppImage

Runs on most other distributions without installing (64-bit Intel/AMD).

AppImage 87.6 MB

Or use it in your browser

Nothing to install: the same app, with the same account and data, at app.cobbleday.com.

Open the app

Installing

Version 0.5.0 still carries Cobbleday's old name, so the app is called cairn on your computer.

macOS

Open the .dmg and drag cairn into Applications.
The app isn't signed by Apple yet, so the first launch needs one extra step. macOS remembers it afterwards.
- macOS 14 and earlier: right-click (or Control-click) cairn in Applications, choose Open, then Open again.
- macOS 15 and later: double-click cairn once and close the warning. Then go to System Settings → Privacy & Security, scroll down, click Open Anyway next to the message about cairn, and confirm.
- Any version, in Terminal (also fixes "cairn is damaged and can't be opened"):
```
xattr -dr com.apple.quarantine /Applications/cairn.app
```

Linux

.deb: in the folder you downloaded it to, run

sudo apt install ./Cobbleday-0.5.0-linux-amd64.deb

AppImage: make it runnable, then start it (keep it somewhere you can write to, like ~/Applications):
```
chmod +x Cobbleday-0.5.0-linux-x86_64.AppImage
./Cobbleday-0.5.0-linux-x86_64.AppImage
```

Check a download

SHA256SUMS lists each file's checksum. With it in the same folder, run shasum -a 256 -c --ignore-missing SHA256SUMS on macOS or sha256sum -c --ignore-missing SHA256SUMS on Linux.

Questions or trouble installing? Write to hello@cobbleday.com.