Comparison · As of 09/2026
Cirlo and Sentry Seer
Both start with an error and end with a fix. The difference is before and after: what starts the chain, and whether anyone hears about it at the end.
What Sentry Seer does well
- Best-in-class error tracking: stack traces, releases, regressions, performance. Cirlo doesn't replace that and doesn't want to.
- Seer finds the cause of a crash and opens pull requests for it, automatically from ten events on, with handoff to Claude Code, Cursor or Copilot. Since 21 Sep 2026 Seer also pushes follow-up commits.
- Seer checks its own pull requests: @sentry generate-test writes tests for them, @sentry review comments on them, and a hosted MCP server gives your agent access to traces.
- Sentry has its own feedback widget and a guide on turning it into a pull request with a Cursor automation.
- If you already use Sentry, you don't need a second tool for this.
Where the chain ends
Seer starts at an exception; user feedback only becomes a task with an automation you build yourself. A button that does nothing, a redirect into nowhere, a wrong calculation: nothing crashes, so an exception pipeline never sees it. Cirlo takes the same Sentry alerts, plus reports from your app and your support inbox, and merges them into one issue. The second difference is the end: there's no reporter identity in Sentry's data that a fixed message could go to. The request for it has been open in Sentry's public tracker since June 2024 (issue 73281). The third difference is the level of proof: Seer's proof ends at a green pull request. Cirlo waits for the merge or the deploy and tells the person who reported it which stage has been reached.
The chain with Sentry Seer
- Collect · partial
- Group · full
- Analyze · full
- Deliver fix · full
- Prove fix · partial
- Notify reporters · no
The chain with Cirlo
- Collect · full
- Group · full
- Analyze · full
- Deliver fix · full
- Prove fix · full
- Notify reporters · full
What it costs
| Sentry Team | USD 26 per month |
| Seer | USD 40 per month |
| Cirlo Pro | CHF 29 per month |
- Sentry Team: Base plan, plus usage-based billing for events.
- Seer: Per active contributor, only on top of a paid plan (price change of 21 Jan 2026).
- Cirlo Pro: Fixed price, no billing by AI usage.
All figures as of 09/2026, from the vendors' public pricing pages. Prices change; check current numbers before you decide.
When Cirlo is the wrong choice
If you're looking for pure error tracking and nobody outside uses your app, you don't need Cirlo. Cirlo pays off the moment real users are affected and you want them to know.