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Description
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.
Information
Bundle IDcom.derdack.projectx
SellerDerdack GmbH
Min iOS15.0
Content rating4+
Released2017-09-21
Reviews 2 captured
★★★★★ Super easy and effective! — filediante
I use SIGNL4 to receive critical alerts that cannot be missed. It never fails to send alerts and the app is very user friendly! I highly recommend it.
★★★★★ SIGNL4 is how alerting should feel — JJExperience
Very visual and easy to use - you can customize your experience and I love the simple punch in and punch out. The design makes it fun to use and the fact that it is mainly app based means that you can finally really carry your mobile alerting in your pocket. Love it and can only recommend it...
Version history · 25 recorded
6.1.2
2026-06-11
- Fixed: Management of PTO/absences for people in user role not possible
6.1.1
2026-06-08
Various fixes and improvements.
6.1.0
2026-05-27
Various fixes and minor improvements.
6.0.2
2026-04-29
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
2026-04-20
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
- Various fixes and improvements
6.0.0
2026-04-14
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
5.5.2
2026-03-30
Minor improvements and bug fixes
5.5.1
2025-12-10
- 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
2025-12-03
- 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.
5.4.0
2025-10-08
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.
5.3.0
2025-09-10
New: You can now pin your favorite Signl templates to the dashobaord and run them from there with one single long tap
5.2.1
2025-08-11
- 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
5.1.2
2025-06-10
Fixed possible crash on startup and other minor issues.
5.1.1
2025-05-15
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
5.1.0
2025-04-29
- 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.
5.0.2
2025-03-05
Minor fixes and improvements.
5.0.1
2025-02-25
Minor fixes and improvements.
5.0.0
2025-02-17
- New: Improved performance and user experience on the dashboard
- New: Redesigned Signl Chat offers a fundamentally improved ChatOps experience
4.5.1
2024-12-12
- We have significantly revamped and improved sending of manual Signls
- Fixed: Hyperlinks in Signal Details were not parsed correctly, preventing them from being opened
4.5.0
2024-12-10
- New: We have significantly revamped and improved sending of manual Signls
4.4.2
2024-10-14
- NEW: We've added AI based Signl summaries which are great to get a quick understanding of complex incidents
4.4.1
2024-09-23
Maintenance update which contains minor bug fixes and prepares the app for new features.
4.4.0
2024-07-23
- Light mode: We've introduced light mode for improved visibility in sunny conditions.
- Design refresh: Experience a modern and consistent design throughout the app.
- Bug fix: Resolved an issue where the back navigation wasn't working correctly on certain views.
4.3.1
2024-07-08
- We streamlined and improved Microsoft logins for more security and convenience.
- We've also implemented minor fixes and improvements to enhance overall app performance.
4.3.0
2024-06-19
New: You can now simply swipe from one open Signl to the next and no longer have to go back to the overview in between
New: You can now swipe from the left to return to the previous view via all in the app
Region availability · 1 of 1 storefronts
| Store | Price | Ratings | Avg | Version |
|---|---|---|---|---|
| US | Free | 153 | 4.5 | 6.1.2 |