SIGNL4 – Mobile Alerting

4.4
375 reviews
10K+
Downloads
Content rating
Everyone
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About this app

In case of critical incidents in areas like workers safety, 24/7 IT operations, manufacturing continuity or disaster response, SIGNL4 is your tool for instant mobile alerting.

It is designed to effectively alert and notify incident response teams like firefighters, emergency teams, IT Ops or Security Ops staff, field service technicians and maintenance engineers.

SIGNL4 adds critical mobile alerting to your services and systems in no time. It bridges the ‘last mile’ from IT and IoT systems, machines and sensors to engineers, IT staff and workers ‘in the field’ and accelerates response up to 10x.

SIGNL4 notifies staff on duty through targeted and persistent mobile push, text messages and voice calls with acknowledgement, tracking and escalation.

It provides for convenient on-call duty and shift scheduling to reliably delivers the right information to the right people at the right time – anywhere.

SIGNL4 enables mission-critical systems in IT, IoT, on the shop floor and in hundred other areas to automatically notify the right people when response time matters.

SIGNL4 provides simple and convenient interfaces like email and webhooks to quickly connect systems like IT monitoring, IT service management, IoT devices, SCADA systems, security cameras and more. We have verified 150+ 3rd party integrations.

SIGNL4 enables to:
* Reliably and persistently dispatch critical alerts and work items to field staff, maintenance engineers and mobile workforce
* Automate alerting/escalation processes by linking machines, IT or any other application to the right person at the right time
* Accelerate and ensure response by providing persistent notifications, response tracking and escalations
* Manage timely availability of operations teams (on-call duties, shifts) to route alerts automatically
* Link any system directly to staff in charge. Consolidate events and alerts from multiple sources. Create a single pane of glass for critical information

SIGNL4 provides:
* Designed for critical operations with a new visual experience including a native 'darkmode'
* Persistent and trackable alert notifications by mobile push, voice calls and text
* Automated escalations based on target response times
* Scheduled and ad-hoc on-call duty and shift management
* Shared annotations to alerts and audit trails
* Raising of alerts from the mobile app
* Integrated mobile chat
* Alert notifications to your entire team or team members on duty
* Custom sounds for your critical alerts
* One-touch connect with your team members
* Monitors, tracks and reports your hours spend on duty (CSV download)
* Complete audit trails of all notifications and response (CSV download)
* 150+ verified integrations and comprehensive API for 3rd party tools

How can you trigger alerts and notifications?
* Send an email or call our webhook (REST API)
* From IT Monitoring systems like PRTG, Zabbix, CheckMK, SCOM, Solarwinds, Dynatrace, Datadog, Grafana, Icinga, Nagios, BMC, Netapp, New Relic, Splunk
* From ITSM systems like ConnectWise, ServiceNow, Freshdesk, Freshservice, SMAX, Topdesk, Remedy
* From IT Security systems like Azure Sentinel, Azure Security, Sophos
* From automation platforms like Zapier, Microsoft PowerAutomate, Node-Red, UIPath
* From IoT and OT like Wonderware, Siemens, zenon, IXON, Telekom IoT Service Button and many other SCADA and MES
* From any systems capable of sending email or calling a webhook
* In-app 1-click alert trigger with automated geo-location
* Use your web browser to send alerts to your team

Note: You need a SIGNL4 account to use this app and some features depend on your SIGNL4 plan.
Updated on
Sep 26, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Personal info and Device or other IDs
This app may collect these data types
Location, Personal info and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
367 reviews
Isaiah Otieno
October 17, 2025
The setup, ease of customization with zabbix and the alerting system...broke my rating scale..its a 10 out of 5 stars...good job!! I feel Good!!
Did you find this helpful?
Cisco-Man
June 10, 2025
Installed and could not login. Support said because I can login to web site to uninstall and reinstall. Didn't work. When entering your password it does not show what is typed. No way to check the password entered.
Did you find this helpful?
Derdack GmbH
June 11, 2025
Sorry to hear about the login issues. Please reach out to our support team again with any error messages so we can assist further. We also appreciate your feedback about the missing "show password" option — we’ll consider this for a future update. Thanks again for your input, and sorry for the inconvenience!
Russ Grenz
August 21, 2025
resends alarms. alarms come back after being acknowledge and closed
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Derdack GmbH
August 21, 2025
Thanks for your feedback. We’d like to know the details of the problem you mentioned. Please send the details or screenshot to hello@signl4.com. We'll pass it along to our development team and see if there is any way we can improve it.

What’s new

Content in Signl categories are now hidden and no longer editable in the app; advanced editing is available in the web portal. We’ve also delivered stability and performance improvements.

App support

Phone number
+493312987820
About the developer
Derdack GmbH
info@signl4.com
Konrad-Zuse-Ring 12 B 14469 Potsdam Germany
+49 1511 4858771

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