# How do I get alerted when my app stops responding entirely?

> Use heartbeats: the app sends a small signal every minute, and an alert fires when they stop. Pagerless SDKs send one every 60 seconds automatically, and 5 minutes without one is a floor: it always wakes someone, with a push and then a phone call.

URL: https://pagerless.dev/answers/alert-when-app-goes-silent
Updated: 2026-10-22

More: [heartbeat monitoring](https://pagerless.dev/glossary/heartbeat-monitoring), [levels and floors](https://pagerless.dev/docs/levels).

## Questions

### How do I get alerted when my app stops responding entirely?

Use heartbeats: the app sends a small signal every minute, and an alert fires when they stop. Pagerless SDKs send one every 60 seconds automatically, and 5 minutes without one is a floor: it always wakes someone, with a push and then a phone call.