Icon of Canary app on Umbrel App Store

Canary

Early warning system for Bitcoin cold storage

schjonhaug

Open App Store on your umbrelOS device to install this app
Screenshot 1 of Canary app on Umbrel App Store
Screenshot 2 of Canary app on Umbrel App Store
Screenshot 3 of Canary app on Umbrel App Store
About this app

A canary in the cold mine. When your bitcoins are in cold storage, you seldom check on them.

Canary acts as an early warning system that alerts you the moment your coins move, giving you immediate notification of any activity on your wallets.

Built with Rust and BDK, it provides real-time transaction intelligence with advanced pattern recognition (RBF fee bumping, CPFP acceleration) and instant multilingual notifications via ntfy.sh.

Set custom balance alerts (equal, less than, or more than) to monitor your holdings. Perfect for monitoring cold storage and Bitcoin holdings you don't actively use.

What's new
Version 1.3.1today

This update contains various bug fixes and improvements:

  • Fixed translation keys showing instead of localized content in notifications
  • Improved BTC amount formatting with locale-aware number display
  • Improved contact editing to preserve unchanged notification methods
  • Added Electrum connectivity checks to prevent wallet creation when the server is unavailable
Version 1.3.0this month

Added support for 8 new languages (Norwegian, Spanish, Portuguese, German, French, Japanese, Danish, Swedish) with full UI and notification translations. Improved contact modal UX and wallet syncing display.

Version 1.2.0last month

New wallet creation wizard based on well known hardware and software wallets, improved XPUB key format handling, and sample Bacon wallet for easy onboarding.

Version 1.1.0last month

Added support for custom ntfy server configuration, allowing you to use your own self-hosted ntfy instance for notifications.

Version 1.0.1last month

Fixed API connectivity issue that prevented adding wallets when running on Umbrel.

Information