The Front Desk Review

Best Observability Apm · head-to-head

AppSignal vs Datadog APM

A sourced, side-by-side comparison for observability apm. AppSignal has the lower entry price. Every figure links to the vendor's own page and the date we captured it.

AppSignal has the lower entry price — AppSignal starts at $0/mo, Datadog APM at $31/mo. Free tier: AppSignal Yes, Datadog APM No. HIPAA: AppSignal Yes, Datadog APM Yes.

As of 2026-06-14 · figures link to their source below

Side by side

AppSignal

$0/mo entry
Entry price$0/mo (Free)
Free tierYes
HIPAA (BAA)Yes
SOC 2—
GDPRYes
Best forRuby on Rails and Elixir/Phoenix teams wanting first-class language support

Datadog APM

$31/mo entry
Entry price$31/mo (APM (with Infra))
Free tierNo
HIPAA (BAA)Yes
SOC 2Yes
GDPRYes
Best forEnterprises running multi-cloud, multi-language stacks

Sources — AppSignal: getapp.com (verified 2026-06-14) · Datadog APM: datadoghq.com (verified 2026-06-14)

Key features

AppSignal: Only EU-based APM: infrastructure hosted in EU (AWS EMEA) for GDPR-first teams; ISO 27001 certified with regular third-party penetration testing; HIPAA BAA available as a paid add-on with PHI protection and breach notification; APM + error tracking + logging + uptime monitoring in a single platform; Unlimited apps, hosts, and team members on all plans

Datadog APM: Watchdog AI for automated anomaly detection and root cause analysis; End-to-end distributed tracing correlated with logs, metrics, and infrastructure; Continuous Profiler for code-level CPU/memory/IO visibility in production; Change tracking correlates deploys and feature flags with performance regressions; Native and hybrid OpenTelemetry ingestion with remote sampling controls

← All observability apm compared · Open data