Skylight review
A focused APM for tracing Ruby endpoints, jobs, SQL activity, and deployment slowdowns.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Skylight is a web-based application performance monitoring and profiling service for Ruby and Rails applications. It is aimed at developers and teams investigating slow endpoints, background jobs, database activity, allocation issues, repeated queries, and regressions after deployments. Its reporting covers response-time distributions, event sequences, source-code locations for trace events, performance trends, slowdown warnings, and GraphQL query aggregation. Support for Rails, Sinatra, Grape, and an early Phoenix agent gives Ruby-focused teams a clear fit.
Pricing is usage-based rather than organized around several named paid plans. The Free usage option includes 100,000 free traces per month at $0 per month. The Usage-based option starts at $20 per million traces, billed monthly, with automatic tier adjustment and volume pricing available. A 30-day free trial is also offered. This structure suits teams that want to begin with a defined free allowance and scale spending with trace volume, though buyers with a preference for fixed feature tiers may find the model less predictable.
Skylight’s strongest differentiator is its depth around application performance diagnosis: endpoint timelines, aggregate request event sequences, SQL query analysis, allocation detection, repeated-query detection, deploy tracking, and background-job monitoring are all part of the feature set. Its integrations include Sidekiq, DelayedJob, ActiveJob, Redis, MongoDB, Elasticsearch, GitHub, Heroku, and GraphQL. Teams seeking focused Ruby application analysis should consider it; organizations needing real-user monitoring, distributed tracing, or log correlation should choose a broader APM platform instead.
Skylight pros and cons
- Where it wins
- Detailed endpoint, SQL, allocation, and background-job analysis
- 100,000 free traces per month with usage-based scaling
- Rails, Sinatra, Grape, Phoenix, and GraphQL support
- Where it doesn't
- Focused primarily on Ruby and Rails applications
- No real-user monitoring for frontend experience analysis
- No verified distributed tracing or log correlation
Skylight fact sheet, pricing and score →
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