DeadBro vs Scout APM: which fits your Rails app?
Both tools catch slow Rails requests and repeated SQL. Scout puts N+1, slow-query, and memory-bloat Insights near the overview; DeadBro emphasizes the detail inside a captured request. Compare the investigation workflow and plan limits before choosing for your app.
DeadBro vs Scout APM: the details
The key difference is where a problem first appears and how you drill into it. These rows compare the N+1 workflow, trace detail, and free plan limits.
Swipe sideways to read the full table.
| What to compare | DeadBro | Scout APM |
|---|---|---|
| Finding N+1 queries | Flags repeated SQL in a captured request and the request timeline | Surfaces N+1, slow-query, and memory-bloat Insights from traces Source ↗ |
| Investigating a trace | Request breakdown includes SQL time, query counts, CPU time, and allocations | Trace view shows layers and individual calls; Insights link to saved traces Source ↗ |
| Free monitoring volume | 50,000 tracked requests/month | 300,000 transactions/month Source ↗ |
| What counts toward usage | Tracked requests | Traced web requests and background jobs Source ↗ |
| Apps and teammates | Plan limits; unlimited on Pro+ | Unlimited apps and users on every plan Source ↗ |
| Errors | Included on Free; 1,000 error requests/month | Included on Free; 5,000 errors/month Source ↗ |
| Logs | Linked logs on Growth+ | 1 GB of logs on Free Source ↗ |
DeadBro figures are from its current plan matrix. Vendor details link to their own pricing or documentation and may change.
The same N+1, two investigation paths
In one Rails app, both tools detected a repeated COUNT query in the same request. DeadBro showed 184 executions and the SQL cost inside that request. Scout also raised the N+1 in its overview Insights, making it easier to notice before opening a trace.
This observation comes from one app reviewed in September 2026 with five monitoring agents installed at once. It describes the investigation workflow, not a benchmark of speed or agent overhead.
What DeadBro includes
- Rails request performance, error tracking, and N+1 detection on the Free plan, with 50,000 tracked requests per month and 7 days of retention.
- Deploy tracking and deeper request drill-down on Starter; Slack alerts and linked application logs on Growth.
- Optional plan-only EXPLAIN for slow SELECT queries on Pro and Enterprise, after a local opt-in. The agent does not run EXPLAIN ANALYZE.
- System monitoring on Enterprise. See the full plan limits and feature matrix.
Which is a better fit?
Choose DeadBro if…
You want to inspect an N+1 inside a particular request, with query cost and allocation detail beside it, plus uptime in the same account.
Choose Scout APM if…
You want N+1 and slow-query Insights surfaced on the overview, or a larger free transaction allowance.
Make the decision with a short trial
Connect one Rails app, generate normal traffic, and compare what each dashboard reveals about a slow request and a real error. Then review retention and usage limits for the plan you would actually buy.