# SIGNL4

> An alert management platform that sends critical notifications to on-call teams and automatically manages incident response

- **Canonical URI:** https://www.vioscale.ai/software/signl4
- **Category:** On Call Management
- **Vendor:** Derdack GmbH
- **Homepage:** https://www.signl4.com
- **Also known as:** signl4
- **Profile claimed by vendor:** no
- **Last updated:** 2026-10-06T22:41:42.875Z

## vioscaleAI score

**60.2 / 100**, confidence 76% (high). Computed 2026-10-06.

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| price_level | 80 | 0.042 | 3.4 | ✓ |
| reliability | 47.5 | 0.157 | 7.5 | ✓ |
| capabilities | 96 | 0.051 | 4.9 | ✓ |
| integrations | 66.2 | 0.049 | 3.2 | ✓ |
| security_posture | 30 | 0.115 | 3.5 | ✓ |
| pricing_transparency | 100 | 0.063 | 6.3 | ✓ |

## Pricing

_As of 2026-10-06, [verify at source](https://www.signl4.com/pricing/). Independently observed._

from $9/seat/mo · Hybrid · Free tier · 30-day trial

> From $9/user/mo. Free tier for up to 5 users.

| Plan | Price | Free | Commitment |
|---|---|:--:|---|
| Starter | Free | ✓ | min 5 seats |
| Notify & Connect | $9/user/mo billed annually or $11/user/mo billed monthly | - | annual |
| Optimize | $15/user/mo billed annually or $19/user/mo billed monthly | - | annual |
| Maximize | $25/user/mo billed annually or $29/user/mo billed monthly | - | annual |

### Starter

Ideal for Exploring and Basic Scenarios

- Push Alerts
- Native mobile App
- Ad-hoc Duty Management
- 'Who is on call' dashboard
- Acknowledgements
- Email, Webhook, REST API
- Workflows
- Teams & Slack Integration
- SSO via 3rd party
- Unlimited Teams

### Notify & Connect

Essential Features - Reliable Entry Solution for Alerting

- Text & Voice Alert included
- Persistent notifications
- ChatOps
- Geolocations & Maps
- Manual Alerts from web browser or mobile app
- User Roles
- Chat & Email Support

### Optimize

Reliable Alerting with Escalations and Oncall/Duty Scheduling

- Automated Escalations
- Flood protection
- Duty & Shift Scheduling with Export
- Post-shift reports
- Remote Actions
- Rules with logical conditions
- Heartbeat and Website Monitors
- 2-way 3rd party connectors
- AI Ops & AI Alerting

### Maximize

Full Features incl. Call Routing and SLAs

- Live Call Routing
- Voice mailbox with alerts
- Public 'Who is on call' Dashboard
- Audit Logs
- Custom Data Retention
- User Provisioning via SCIM
- Priority Support
- SLA 99.95%

### Add-ons

- **Stakeholder Notification** ($3/stakeholder/mo + $30/stakeholder/yr)
- **Dedicated Phone Number** ($10/mo + $110/yr)

## About

A cloud-based alerting service that delivers critical notifications via push, SMS, and voice to the right on-call team members, automates escalations and acknowledgments, and integrates with 200+ monitoring and infrastructure tools to ensure no critical alerts go unaddressed.

_Independently observed._

## Platform & deployment

- **Platforms:** iOS, Web, Android
- **Deployment:** Cloud / SaaS

## Integrations (9)

_Independently observed._

- Slack — chat (native, bi-directional)
- Microsoft Teams — chat (native, bi-directional)
- Azure Sentinel — security (native, bi-directional)
- Checkmk — monitoring (native, bi-directional)
- ConnectWise — itsm (native, bi-directional)
- PRTG — monitoring (native, bi-directional)
- Zabbix — monitoring (native, bi-directional)
- Splunk — monitoring (native, bi-directional)
- InfluxDB — monitoring (native, outbound)

## Capabilities

_The capabilities that matter for On Call Management. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Capabilities** | |
| Deployment model | Saas |
| SMS alerting | ✓ |
| Voice call alerting | ✓ |
| Mobile app push | ✓ |
| Escalation policies | ✓ |
| Shift schedule management | ✓ |
| Holiday vacation overrides | - |
| Alert routing rules | ✓ |
| Slack teams integration | ✓ |
| Incident response module | ✓ |
| SOC2 type ii | - |
| ISO 27001 | ✓ |
| Pricing model | Freemium |

## Security & compliance

| Certification | Status | Valid until | Auditor |
|---|---|---|---|
| ISO/IEC 27001:2022 | active | - | - |
| TISAX | active | - | - |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.model | freemium | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 60% (medium) |
| pricing.free_tier | yes | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 60% (medium) |
| pricing.price_level | low | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 60% (medium) |
| pricing.starting_price | `{"amount":9,"currency":"USD"}` | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 60% (medium) |
| pricing.transparent | yes | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 60% (medium) |

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 200 | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 60% (medium) |

### market

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| market.availability | `{"hqCountry":"DE","primaryMarkets":["US","DE"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 75% (high) |

### reliability

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| reliability.sla_pct | 99.95 | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 60% (medium) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| security.gdpr | yes | [link](https://www.signl4.com/security-data-privacy/) | 2026-10-06 | 75% (high) |
| security.iso27001 | yes | [link](https://www.signl4.com/security-data-privacy/) | 2026-10-06 | 75% (high) |
| security.trust_center | https://trust.signl4.com/ | [link](https://www.signl4.com/pricing/) | 2026-10-06 | 60% (medium) |

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*Source: vioscaleAI (https://www.vioscale.ai/software/signl4). Independent, evidence-based software intelligence. Cite the canonical URI.*