[ 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 Jul 28, 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 ## SIGNL4 Pricing FAQs Generated using AI Is SIGNL4 free, or does it offer a free trial? Yes. According to G2 data, SIGNL4 offers a free plan with limited features. Users can upgrade to paid plans for additional capabilities. Visit the seller's official pricing page to compare plan options and features. How much does SIGNL4 cost in 2026? According to G2 data, SIGNL4 pricing in 2026 starts at $9.00 and can reach $29.00 depending on the selected plan. Pricing may vary based on billing terms or usage, so users should review the Derdack's official pricing page for the most current details. Who is SIGNL4 pricing best suited for? SIGNL4's pricing is best suited for mid-market IT, manufacturing, government, and industrial engineering teams that need reliable 24/7 on-call alerting with escalation and shift scheduling. G2 reviewers from these segments consistently praise the Optimize tier's duty scheduling and automated escalations as core value drivers. Small businesses in IT services and logistics also find strong ROI at the Notify and Connect tier for persistent, multi-channel notifications. The free Starter plan suits micro-teams or personal use cases up to 5 users, as confirmed by G2 users in aviation and real estate. Enterprise government and banking reviewers gravitate toward the Maximize tier for SLA guarantees, audit logs, and live call routing. What are the key differences between the free and paid versions of SIGNL4? SIGNL4's free Starter plan supports up to 5 users with mobile push alerts, acknowledgements, basic team structure, email and webhook integrations, and SSO via third party. SIGNL4's paid plans unlock significantly more capability: the $9/month Notify and Connect tier adds text and voice alerts, persistent notifications, manual alerts, user roles, and ChatOps. The $19/month Optimize tier introduces automated escalations, shift scheduling, alert flood protection, conditional rules, and two-way third-party connectors. G2 reviewers note the jump from free to paid is steep for small teams needing just one feature like persistent notifications, with one aviation reviewer citing a move from $0 to $18/month for two users solely for that capability. Is SIGNL4 considered good value for its pricing? G2 reviewers broadly consider SIGNL4 good value, with the average rating sitting at 4.5/5 across a large, diverse reviewer base. Multiple G2 users highlight the pricing as attractive relative to competitors, with one mid-market broadcast media reviewer calling it "extremely attractive" and a logistics reviewer noting it is "very reasonable." However, cost concerns surface repeatedly, particularly among small businesses and freelancers who find the per-user model adds up quickly for small teams. G2 reviews of SIGNL4 from enterprise government and banking segments indicate the service is "not exactly cheap" but justified by reliability, escalation automation, and multi-channel alerting that replaces costlier legacy PBX or SMS-gateway setups. ## Top-Rated Alternatives [ ![PagerDuty](https://images.g2crowd.com/uploads/product/hd_favicon/d1d426a36640ab716bab27171994b964/pagerduty.svg "PagerDuty") PagerDuty 4.5/5(972) ](https://www.g2.com/products/pagerduty/reviews) [ ![DialMyCalls](https://images.g2crowd.com/uploads/product/hd_favicon/089b6e85a66345b5ed2851157d0d5dc5/dialmycalls.svg "DialMyCalls") DialMyCalls 4.7/5(1,000) ](https://www.g2.com/products/dialmycalls/reviews) [ ![xMatters](https://images.g2crowd.com/uploads/product/hd_favicon/103f1ffdbe158913c7f6599b09784512/xmatters.svg "xMatters") xMatters 4.5/5(786) ](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 "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 "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(972) [ 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 are the most trusted gym management platforms by gym managers and fitness studio owners based on user reviews?](https://www.g2.com/discussions/what-are-the-most-trusted-gym-management-platforms-by-gym-managers-and-fitness-studio-owners-based-on-user-reviews)[What file converter software is easy enough for a non-technical team to use reliably without constantly running into format errors or lost metadata?](https://www.g2.com/discussions/what-file-converter-software-is-easy-enough-for-a-non-technical-team-to-use-reliably-without-constantly-running-into-format-errors-or-lost-metadata)[Top desk booking platforms for large corporate offices](https://www.g2.com/discussions/what-are-the-top-desk-booking-platforms-for-large-corporate-offices) [What are the best feature management platforms for product teams shipping features without code recompilation?](https://www.g2.com/discussions/what-are-the-best-feature-management-platforms-for-product-teams-shipping-features-without-code-recompilation)[What is the most reliable file recovery software for getting back deleted photos on a Windows PC from a folder that was accidentally wiped rather than just moved to the recycle bin?](https://www.g2.com/discussions/what-is-the-most-reliable-file-recovery-software-for-getting-back-deleted-photos-on-a-windows-pc-from-a-folder-that-was-accidentally-wiped-rather-than-just-moved-to-the-recycle-bin)[Pros and Cons Details](https://www.g2.com/products/signl4-derdack/reviews?qs=pros-and-cons) [Show MoreShow Less](javascript:void(0);)