AppSignal vs DataBuff
AppSignal
appsignal.comDataBuff
databuff.aiSide by side
| Figure | AppSignal | DataBuff |
|---|---|---|
| Price from | $23.25/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 0 |
| Spec score · Runtime Monitoring Software | 8.6 (#10) | 7.6 (#29) |
| Spec score · Distributed Tracing Tools | 8.5 (#6) | 7.6 (#20) |
| Integrations | The site highlights Slack, GitHub, Jira, Linear, GitLab, and PagerDuty integrations. | External AI agents including Cursor and Claude Code can connect through MCP to call DataBuff APM tools. |
| Intended users | The free plan is described as suitable for startups, hobby projects, and side projects. | The product overview describes use cases including teams seeking quick APM deployment, conversational troubleshooting, and self-hosted AI operations capabilities. |
| Product | AppSignal is an all-in-one application monitoring product for developers, with error tracking and performance monitoring. | DataBuff describes itself as an open-source, AI-native OpenTelemetry APM for application performance monitoring and distributed tracing. |
| Security | AppSignal states that it is ISO 27001 certified and GDPR and HIPAA compliant. | The documented MCP MVP has no dedicated API token, and the guide recommends using an intranet, VPN, or reverse proxy. |
| Support | AppSignal says customers can contact a real engineer through live chat or support email. | The maker's partner page describes delivery playbooks, pre-sales assets, co-engineering support, and partner enablement for partners. |
Plans
In their own words
AppSignal
AppSignal is a cloud application-monitoring service for developers, with error tracking, performance monitoring, logs, and tracing. Error tracking groups exceptions with backtraces and the deployment linked to each issue. Performance monitoring covers response times, throughput, slow endpoints, and slow queries. Log management provides full-text search, attribute filters, saved queries, live tail, and pattern-based alerts. Distributed tracing, transaction tracing, and log correlation are available. AppSignal lists support for Ruby, Elixir, Node.js, JavaScript, Python, Go, Java, PHP, and Rust, with integrations including Slack, GitHub, Jira, Linear, GitLab, and PagerDuty. Its MCP server lets AI assistants such as Claude, Cursor, and Zed query production errors, traces, and deploys. The free plan costs nothing and includes 30K requests, 1GB logging, five-day retention, and unlimited users, teams, applications, and dashboards. Paid access is $279 a year, billed yearly at $23.25/month, with 250K requests per month. A 30-day full-featured trial requires no credit card. AppSignal says it does not charge overages or stop monitoring when limits are crossed.