AppSignal publishes transparent free and paid pricing plus explicit EU/GDPR compliance and bundled uptime/host monitoring, while Scout APM emphasizes…
Best for AppSignal: Teams that need published pricing, EU data residency and GDPR compliance, and uptime/host monitoring bundled with APM.
Best for Scout APM: Ruby, Python, PHP, Elixir, or Node.js teams that want fast npx-based setup and code-level query/N+1 detection, and are willing to request a quote since pricing isn't published.
At a Glance
AppSignal
Scout APM
Primary category
Developer Tools
Developer Tools
Rating
Not documented
Not documented
Pricing model
Usage-based
Freemium with usage-based (transaction volume) paid tiers
Starting price
Free
Free plan available (300K monthly transactions); paid plans from $19/month
Free plan
Yes
Not documented
Free trial
Yes
Yes
Platforms
Web
Web
Team collaboration
Not documented
Not documented
AI features
Yes
Yes
Public API
Yes
Not documented
Key Differences
Pricing transparency
AppSignal: Publishes an exact free tier (50K requests/month) and paid price (€219/year, ~€18.25/month billed annually).
Scout APM: Official pricing tiers and starting price are not published on a page that could be directly verified.
Teams comparing total cost of ownership can plan around AppSignal's published rate but need a sales conversation to know Scout APM's actual cost.
Native language coverage
AppSignal: Natively supports Ruby, Elixir, Node.js, JavaScript, and Python, plus any OpenTelemetry-compatible language.
Scout APM: Supports Ruby, Python, PHP, Elixir, and Node.js, with no stated support for Java, Go, or .NET.
Teams using Java, Go, or .NET have a documented OpenTelemetry path with AppSignal but no stated path with Scout APM.
Monitoring scope
AppSignal: Bundles error tracking, performance monitoring, log management, anomaly detection, and uptime/host monitoring in one plan.
Scout APM: Covers app traces, error monitoring, log management, app metrics, and query analysis, without stated uptime or host-level monitoring.
Teams wanting infrastructure-level uptime/host checks alongside APM get it natively with AppSignal.
Compliance and regional basing
AppSignal: EU-based (Amsterdam, Netherlands), GDPR compliant, and SOC2 certified.
Scout APM: No compliance certifications or headquarters are stated.
Teams with EU data-residency or GDPR obligations have documented assurance with AppSignal that isn't available for Scout APM in the facts.
Feature-by-Feature
Core Features
Feature
AppSignal
Scout APM
Error tracking
Available
Available
Performance monitoring / APM
Available
Available
Log management
Available
Available
Uptime and host monitoring
Available
Not documented
Query / N+1 analysis
Not documented
Available
Distributed tracing
Limited
Not documented
Pricing & Plans
Feature
AppSignal
Scout APM
Free plan
Available
Not documented
Published paid pricing
Available
Limited
Compliance & AI
Feature
AppSignal
Scout APM
GDPR / SOC2 compliance stated
Available
Not documented
MCP server for AI coding agents
Available
Available
Pricing Compared
Starting price reflects the lowest paid tier, not the full cost for every team size or usage level.
AppSignal
Free — $0 N/A
Paid — From $25/month Monthly or annual
Scout APM
Free — $0/month monthly
Production Ready — $59/month (annual) or $98/month (monthly) monthly or annual
Enterprise — Custom custom
Pros & Cons
AppSignal
Pros
All monitoring features included on every plan with no feature gating
Genuinely usable free tier (50,000 requests/month, no credit card)
Unlimited users, teams, applications, and dashboards on all plans
Broad language support via first-party integrations plus OpenTelemetry
Cons
Usage-based pricing means costs scale with request volume as traffic grows
Fewer first-party language integrations than some larger APM competitors
Enterprise features like SSO require contacting sales
Scout APM
Pros
Unlimited users and applications on every plan, including free
Specialized, mature support for Ruby on Rails plus other major languages
Combines APM, error monitoring, and logs in a single product
Free tier available with a meaningful transaction allowance
Cons
Log retention on paid non-enterprise plans is limited to 14 days
Errors are capped at 5,000 on most tiers unless purchasing add-ons
Smaller feature breadth than large APM platforms like Datadog or New Relic
Enterprise-grade features such as SSO and SLA reporting require custom Enterprise pricing
Use Cases
Choose AppSignal: Teams that need published pricing, EU data residency and GDPR compliance, and uptime/host monitoring bundled with APM.
Choose Scout APM: Ruby, Python, PHP, Elixir, or Node.js teams that want fast npx-based setup and code-level query/N+1 detection, and are willing to request a quote since pricing isn't published.
Need both: Engineering organizations running AppSignal for company-wide error, uptime, and host monitoring while a specific Rails or Django team also uses Scout APM's query analysis for database performance tuning.
AppSignal
Full-stack app monitoring — Track errors, performance, and logs for a production Ruby, Elixir, Node.js, or Python application in one dashboard.
Incident response — Get anomaly alerts and deploy-correlated error tracking to speed up debugging during incidents.
Scout APM
Ruby on Rails performance monitoring — Rails development teams use Scout to detect N+1 queries, memory bloat, and slow endpoints in production.
Multi-language application monitoring — Teams running Python, PHP, Node.js, or Elixir applications use Scout for unified performance and error tracking.
Cost-predictable APM for small teams — Smaller engineering teams use Scout's transaction-based pricing to get APM without per-seat licensing costs.
Frequently Asked Questions
Does AppSignal have a free plan?
Yes, a free plan covering 50,000 requests/month with 5-day retention and no credit card required.
What languages does AppSignal support natively?
Ruby, Elixir, Node.js, JavaScript and Python, plus any OpenTelemetry-compatible language.
Where is AppSignal based?
Amsterdam, Netherlands; the company was founded in 2012.
What languages does Scout APM support?
Ruby, Python, PHP, Elixir and Node.js, across frameworks like Rails, Django, Laravel, Phoenix and Express.
Can Scout APM connect to AI coding assistants?
Yes, via an MCP server, CLI and API for tools like Claude Code and Cursor.
Is there a free trial for Scout APM?
Yes, Scout APM offers a free trial with setup via a one-line installer command.