# SIGNL4 - Mobile Alerting

> Critical Alert Notifications

Canonical page: [https://chrome-stats.com/d/id1100283480](https://chrome-stats.com/d/id1100283480)

## Overview

- **ID:** `id1100283480`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Derdack GmbH
- **Category:** Productivity
- **Rating:** 4.50 / 5 (164 ratings)
- **Version:** 6.4.0
- **Last updated:** 2026-09-10
- **First published:** 2017-09-21
- **Size:** 55 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/signl4-mobile-alerting/id1100283480)
- **Website:** [https://www.signl4.com](https://www.signl4.com/)
- **Privacy policy:** [https://www.signl4.com/privacy-policy/](https://www.signl4.com/privacy-policy/)

## Description

SIGNL4 - Mobile Alerting is a Chrome extension that delivers persistent, multi-channel critical alerts to on-call staff during incidents. It notifies teams by mobile push, SMS/text, and voice calls with acknowledgement, tracking, and escalation, supporting IT ops, field technicians, and emergency responders.

The extension integrates with 150+ tools via email, webhooks, and REST API, offers on-call scheduling, audit trails, and customizable alert sounds, and enables rapid, coordinated responses from dashboards, monitoring tools, or voice assistants.

## Rankings

- #113,852 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1100283480)