SIGNL4 - Mobile Alerting6.4.0 - App Store

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+ integrations with 3rd party tools.

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 critical infrastructure 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:
* A new visual experience for critical alerts
* 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)
* Comprehensive API for 3rd party integrations

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
* Using Amazon Alexa (voice recognition)
* 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.

Version History - New: You can now change your profile color in the profile settings
- New: Stakeholders can now also enter and submit comments or confirmations in the Signl chat 6.4.0 Sep 10 We’ve made SIGNL4 even easier and more flexible to use:
- Changed the login and sign-up process for a smoother experience
- You can now flag your Signls for review
- Various fixes and improvements 6.3.0 Aug 18 New: You can attach images, videos or voice recordings to the Signl chat 6.2.0 Jul 7 Minor fixes and improvements. 6.1.3 Jun 24 - Fixed: Management of PTO/absences for people in user role not possible 6.1.2 Jun 11 Various fixes and improvements. 6.1.1 Jun 8 Various fixes and minor improvements. 6.1.0 May 27 We’ve made several improvements to make SIGNL4 even easier and more flexible to use:
- Simplified the login and sign-up process for a smoother experience
- Added support for stakeholder accounts
- Added support for alerts sent to distribution lists
- Various fixes and improvements 6.0.2 Apr 29 We’ve made several improvements to make SIGNL4 even easier and more flexible to use:
- Simplified the login and sign-up process for a smoother experience
- Added support for stakeholder accounts
- Added support for alerts sent to distribution lists
- Various fixes and improvements 6.0.1 Apr 20 We’ve made several improvements to make SIGNL4 even easier and more flexible to use:
- Simplified the login and sign-up process for a smoother experience
- Added support for stakeholder accounts
- Added support for alerts sent to distribution lists 6.0.0 Apr 14 Minor improvements and bug fixes 5.5.2 Mar 30 - New: Manage your personal absences (such as vacations) so your team is always aware of your availability during duty scheduling.
- New: Updated duty companion (Live Activity) with a refreshed design and improved reliability.
- New: Modernized icons throughout the app.
- New: Seamless one-tap sign-in using FaceID button for a faster and more secure login experience.
- Fixed: Occasional unnecessary sign-in reminders have been resolved. 5.5.1 12/10/2025 - New: Manage your personal absences (such as vacations) so your team is always aware of your availability during duty scheduling.
- New: Updated duty companion (Live Activity) with a refreshed design and improved reliability.
- New: Modernized icons throughout the app.
- New: Seamless one-tap sign-in using FaceID button for a faster and more secure login experience.
- Fixed: Occasional unnecessary sign-in reminders have been resolved. 5.5.0 12/03/2025 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. 5.4.0 10/08/2025 New: You can now pin your favorite Signl templates to the dashobaord and run them from there with one single long tap 5.3.0 09/10/2025 - Duty Companion is now available as a Live Activity (iOS 17.2+)
- Added "Clear All" functionality for dashboard notifications
- Multiple bug fixes and minor improvements 5.2.1 08/11/2025 Fixed possible crash on startup and other minor issues. 5.1.2 06/10/2025 New: Profile picture can now be deleted in the app
New: Long-pressing on a Signl directly opens the Signl chat
Minor fixes and improvements 5.1.1 05/15/2025 - New quick access to the Signl-Chat from the Signl overview.
- New 'Lifecycle and Notifications' view in the Signl details.
- Added support for tiered escalations. 5.1.0 04/29/2025 Minor fixes and improvements. 5.0.2 03/05/2025 Minor fixes and improvements. 5.0.1 02/25/2025 - New: Improved performance and user experience on the dashboard
- New: Redesigned Signl Chat offers a fundamentally improved ChatOps experience 5.0.0 02/17/2025 - We have significantly revamped and improved sending of manual Signls
- Fixed: Hyperlinks in Signal Details were not parsed correctly, preventing them from being opened 4.5.1 12/12/2024 - New: We have significantly revamped and improved sending of manual Signls 4.5.0 12/10/2024 - NEW: We've added AI based Signl summaries which are great to get a quick understanding of complex incidents 4.4.2 10/14/2024