Grafana Cloud Application Observability vs SigNoz

Grafana Cloud Application Observability monitors applications and brings OpenTelemetry and Prometheus data together to help software engineers investigate anomalies and their causes. Its knowledge graph discovers services and relationships from telemetry, while the service catalog displays latency, error ratio, and request rate for each service. The RCA workbench and Entity Graph help investigate correlated problems across a stack. Metrics, logs, traces, and profiles share a unified view, with drill-down from a service into its signals. Grafana identifies Alloy as a collector with native pipelines for OpenTelemetry and Prometheus. The free plan includes up to 2,232 host hours per month and community support. Pro is listed at $0.03 a month, with a $19 monthly platform fee and $0.025 per host hour; host hours and application telemetry are billed at standard Grafana Cloud rates. Serverless usage is billed on telemetry ingested instead of host hours. The cloud service runs on Linux, macOS, Windows, and the web.

SigNoz is an open-source observability tool for monitoring applications and infrastructure. It brings logs, metrics, traces, and exceptions together with alerting and separate explorers for Trace, Logs, and Metrics. The OpenTelemetry-native design does not require proprietary agents. A Query Builder supports aggregations, filters, and formulas across signal types, while alerts can detect thresholds, anomalies, and Apdex conditions. Users can create dashboards from metrics, logs, and traces. APM charts cover p99 latency, error rate, Apdex, and operations per second, alongside database and external-call monitoring. Distributed tracing uses flamegraph and Gantt-chart views to follow requests across services. SigNoz stores telemetry in ClickHouse with hot and cold tiers. It can run in the cloud or be self-hosted using Docker, Docker Swarm, or Kubernetes. Cloud provides 30-day access to all features for new users; the self-hosted Community option is free but requires users to manage infrastructure, storage, scaling, upgrades, and backups.