Your monitoring should be able to tap you on the wrist, not just write to a log nobody reads. Bark is an open-source push notification server for iPhone and iPad: any script, cron job, or monitoring tool sends one HTTP request to your server, and a custom notification lands on your iOS device through Apple's push service, usually within a second and without draining the battery. Notifications carry titles, subtitles, bodies, badges, custom icons, and sounds, and the iOS-only vocabulary is fully supported: grouping related alerts together, time-sensitive delivery that breaks through Focus, critical alerts that keep ringing for thirty seconds, and tap actions that open a URL or copy a value to the clipboard. Batch keys notify several devices at once, archived messages can carry a time-to-live before they delete themselves, and encrypted pushes keep content unreadable to anyone in the middle. The server itself is deliberately tiny: one container or binary listening on a port, device tokens stored in a local file database by default, an endpoint to register devices, health checks for your supervisor, and even an MCP interface so AI agents can notify you through the same pipe. Cron jobs, backup scripts, CI pipelines, and home automations all gain a voice that reaches the phone in your pocket. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.