[ SIGNL4 Reviews ](https://www.g2.com/products/signl4-derdack/reviews) [ SIGNL4 Reviews ](https://www.g2.com/products/signl4-derdack/reviews) # SIGNL4 Pricing Overview [Editedit](https://my.g2.com/signl4-derdack/pricings) Free Trial ## SIGNL4 Pricing Key Insights Last updated on Apr 09, 2026 * * * SIGNL4 offers **4 pricing editions** , starting from **$0** to **$29**. SIGNL4 pricing tiers are designed to support different usage levels and team sizes. SIGNL4 also offers a **free trial**. Compare the SIGNL4 pricing table below to figure out the best fit for your needs. Some plans may require you to contact **Derdack** for **custom pricing**. * * * Starter — $0 / 5 Users Notify & Connect — $9 / 1 User Per Month Optimize — $19 / 1 User Per Month Maximize — $29 / 1 User Per Month Rated 4.6 / 5 \*Pricing information is supplied by the software provider or retrieved from publicly accessible pricing materials. Final cost negotiations must be conducted with the seller. Starter Free 5 Users Free plan with essential features for mobile alerting for max 5 users - Mobile App with Push Alerts - Mobile Alert Acknowledgements - Max 5 Users - Teams - Email, Webhook, REST API - SSO via 3rd party - ‘Who is on call’ dashboard Show More Notify & Connect $9.00 1 User Per Month Top-reliable alerting for mission-critical applications - Everything in free Starter plan plus - Text & Voice Alert included - Persistent notifications - Manual Alerts from web browser or mobile app - User Roles - ChatOps Show More Optimize $19.00 1 User Per Month Best for on-call operations - Everything in Notify & Connect plus: - Automated Escalations - Alert Flood Protection - Digital Duty & Shift Scheduling - Rules with logical conditions - 2-way 3rd party connectors - AI for Analytics and Reports Show More Maximize $29.00 1 User Per Month Top plan with all features, live call routing and SLA. Everything in Optimize plus: - Live Call Routing - Voice mailbox with alerts - Public ‘Who is on call’ Dashboard - Audit Logs - Priority Support - SLA 99.95% Show More Pricing ranges from US$9 (Notify & Connect) to US$29 (Maximize) per user per month, depending on the feature pack plan. Both monthly and annual payment is possible. We accept credit cards or payment by check/wire transfer. A forever-free plan is available for up to 5 users. Pricing information for SIGNL4 is supplied by the software provider or retrieved from publicly accessible pricing materials. Final cost negotiations to purchase SIGNL4 must be conducted with the seller. All paid subscriptions include all communication costs for mobile push, text messages and voice call alerts. Pricing information was last updated on February 28, 2025 Show More ## Top-Rated Alternatives [ ![PagerDuty](https://images.g2crowd.com/uploads/product/hd_favicon/d1d426a36640ab716bab27171994b964/pagerduty.svg "PagerDuty") PagerDuty 4.5/5(967) ](https://www.g2.com/products/pagerduty/reviews) [ ![DialMyCalls](https://images.g2crowd.com/uploads/product/hd_favicon/089b6e85a66345b5ed2851157d0d5dc5/dialmycalls.svg "DialMyCalls") DialMyCalls 4.7/5(993) ](https://www.g2.com/products/dialmycalls/reviews) [ ![xMatters](https://images.g2crowd.com/uploads/product/hd_favicon/103f1ffdbe158913c7f6599b09784512/xmatters.svg "xMatters") xMatters 4.5/5(789) ](https://www.g2.com/products/xmatters/reviews) [ View All Alternatives ](https://www.g2.com/products/signl4-derdack/competitors/alternatives) ## SIGNL4 Pricing Reviews (2) ![Verified User in Government Administration](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Government Administration") AG Verified User in Government Administration Enterprise (\> 1000 emp.) 11/9/2025 More Options - "Essential Tool for IT Security and Seamless Emergency Response" 5/5 What do you like best about SIGNL4? SIGNL4 has proven to be a valuable solution in the context of our ISO 27001 certification process and the implementation of BSI IT baseline protection. Through its efficient alerting and support for on-call duty and IT monitoring, we have successfully met the requirements for comprehensive IT security and emergency response. The system plays a crucial role in enabling us to detect potential IT issues early and respond quickly, without disrupting ongoing processes. The implementation of SIGNL4 into our existing systems was very straightforward and time-efficient, thanks to the open API and pre-built templates. Whenever questions or issues arose, customer support provided prompt and effective assistance. Review collected by and hosted on G2.com. What do you dislike about SIGNL4? A downside of SIGNL4 is that the service is not available as an on-premises solution, but is offered exclusively as a SaaS (Software as a Service). As a result, we need to integrate our internal high-security systems into the SaaS solution, which requires significant effort and resources. Review collected by and hosted on G2.com. What problems is SIGNL4 solving and how is that benefiting you? SIGNL4 provides a double safeguard through its immediate real-time alerting and automated escalation: firstly, it ensures that the right people respond immediately to critical incidents, and secondly, it prevents an incident from escalating due to a lack of response. These features significantly increase efficiency and response speed, thereby directly contributing to the minimization of downtime and security risks. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: OrganicAI Translated ![Verified User in Mechanical or Industrial Engineering](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Mechanical or Industrial Engineering") AM Verified User in Mechanical or Industrial Engineering Mid-Market (51-1000 emp.) 4/21/2026 More Options - "Great Team Project Management and Integrations, but the UI Needs Polish" 3.5/5 What do you like best about SIGNL4? The team aspect for projects and the integrations. Review collected by and hosted on G2.com. What do you dislike about SIGNL4? The UI can be a bit unintuitive. Pricing for smaller teams could be a bit more competive. Review collected by and hosted on G2.com. What problems is SIGNL4 solving and how is that benefiting you? Notifcation messages when systems are down. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic SIGNL4 Comparisons ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_e5d47d6fbc279b6fd32f29b6058c25a9/pagerduty.png "Product Avatar Image") PagerDuty 4.5/5(967) [ Compare Now ](https://www.g2.com/compare/pagerduty-vs-signl4-derdack) ##### Categories on G2 [ Incident Management ](https://www.g2.com/categories/incident-management)[ IT Alerting ](https://www.g2.com/categories/it-alerting)[ Emergency Notification ](https://www.g2.com/categories/emergency-notification) ##### Explore More [ What is the most affordable invoice management software for SMBs? ](https://www.g2.com/discussions/what-is-the-most-affordable-invoice-management-software-for-smbs)[ What is the top-rated medical QMS for ISO 13485 compliance? ](https://www.g2.com/discussions/what-is-the-top-rated-medical-qms-for-iso-13485-compliance)[ Most reliable relational database software for new businesses ](https://www.g2.com/discussions/what-is-the-most-reliable-relational-database-software-for-new-businesses) [ What is the most affordable website builder for SMBs? ](https://www.g2.com/discussions/what-is-the-most-affordable-website-builder-for-smbs)[ Which e-commerce software has the best customer reviews ](https://www.g2.com/discussions/which-e-commerce-software-has-the-best-customer-reviews)[ Pros and Cons Details ](https://www.g2.com/products/signl4-derdack/reviews?qs=pros-and-cons) Show More [ What is the most affordable invoice management software for SMBs? ](https://www.g2.com/discussions/what-is-the-most-affordable-invoice-management-software-for-smbs)[ What is the top-rated medical QMS for ISO 13485 compliance? ](https://www.g2.com/discussions/what-is-the-top-rated-medical-qms-for-iso-13485-compliance)[ Most reliable relational database software for new businesses ](https://www.g2.com/discussions/what-is-the-most-reliable-relational-database-software-for-new-businesses) [ What is the most affordable website builder for SMBs? ](https://www.g2.com/discussions/what-is-the-most-affordable-website-builder-for-smbs)[ Which e-commerce software has the best customer reviews ](https://www.g2.com/discussions/which-e-commerce-software-has-the-best-customer-reviews)[ Pros and Cons Details ](https://www.g2.com/products/signl4-derdack/reviews?qs=pros-and-cons)