Skip to content
SPECIFICTION
Get listed

Skylight

skylight.io

From $20/mo Free plan WebmacOSLinuxAPI
Visit skylight.io
Spec score 7.8 #23 of 37 in Application Performance Monitoring

What it is

Skylight is a cloud profiler for Ruby and Rails applications, available through API, Linux, macOS, and web platforms. It ranks endpoints by “agony,” combining popularity with response time, and plots deployments against performance so teams can relate code changes to results. Supported Ruby frameworks include Rails, Sinatra, and Grape. Skylight analyzes Sidekiq, DelayedJob, and ActiveJob background queues, and can flag allocation-heavy code and repeated queries. Endpoint timelines present aggregated, sanitized SQL queries. GraphQL queries are grouped by name in the dashboard and endpoint event sequences. A weekly report identifies improved endpoints, slowdown warnings, and endpoints that declined over six weeks. Each account includes 100,000 free traces per month. Paid tiers start at $20 a month and adjust to monthly trace volume across apps. A 30-day trial is available without a credit card. Open-source apps may apply for free public reporting. Communications are encrypted, and access to customer information is limited to selected personnel and contractors.

Spec sheet

Product
Skylight is a smart profiler for Ruby and Rails applications that turns performance data into actionable insights.Read 10 Oct 2026 · skylight.io
Trial
The signup page offers a free month, and the pricing page says no credit card is required to try Skylight.Read 10 Oct 2026 · skylight.io
Support
Skylight provides documentation for setup, instrumentation, performance tips, background jobs, and troubleshooting, and directs users with further questions to contact support.Read 10 Oct 2026 · skylight.io
Background jobs
Skylight supports performance analysis for Sidekiq, DelayedJob, and ActiveJob queues.Read 10 Oct 2026 · skylight.io
Deploy tracking
Skylight plots deploys on a graph to show how code changes affect performance.Read 10 Oct 2026 · skylight.io
Diagnostics
Skylight can flag allocation hogs and repeated queries that may slow an app.Read 10 Oct 2026 · skylight.io
Endpoint prioritization
Skylight ranks endpoints by “agony,” a combination of popularity and response time.Read 10 Oct 2026 · skylight.io
Frameworks
Skylight supports Ruby frameworks including Rails, Sinatra, and Grape.Read 10 Oct 2026 · skylight.io
GraphQL
Skylight aggregates GraphQL queries by name in its dashboard and endpoint event sequences.Read 10 Oct 2026 · skylight.io
Open source
Open-source apps can apply for free public performance reporting, and setup instructions are sent after approval.Read 10 Oct 2026 · skylight.io
Privacy and security
The privacy statement says communications with Skylight are encrypted and access to customer information on secure servers is limited to selected personnel and contractors.Read 10 Oct 2026 · skylight.io
Query analysis
The endpoint timeline provides aggregated, sanitized SQL queries for troubleshooting.Read 10 Oct 2026 · skylight.io
Trends
Skylight provides a weekly performance report with improved endpoints, slowdown warnings, and endpoints that have declined over six weeks.Read 10 Oct 2026 · skylight.io

Plans and prices

Free allowance Free 100,000 free traces per month for every account 100,000 monthly traces Read 10 Oct 2026 · skylight.io
Paid tiers $20 a month Starting at $20 per month; billing is based on monthly traces across all apps Tiers automatically adjust to monthly trace volume Read 10 Oct 2026 · skylight.io
Volume pricing Priced on request Email [email protected] for volume pricing More coverage; contact for pricing information Read 10 Oct 2026 · skylight.io

Every Skylight plan and price →

Strong points and limits

Strong points

  • Ranks endpoints by popularity and response time
  • Tracks deployments alongside performance
  • Analyzes common Ruby background queues
  • Includes 100,000 free traces monthly
  • Paid tiers start at 20.00 USD monthly

Limits

  • Supports Ruby frameworks rather than general languages
  • Volume pricing requires contacting Skylight

Who it suits

Skylight suits teams maintaining Ruby or Rails applications that need endpoint, query, deployment, and background-job performance analysis. It is also relevant to open-source projects applying for public performance reporting.

Verdict

Skylight provides focused Ruby performance profiling with endpoint prioritization, deployment context, query diagnostics, and trend reports. The free trace allowance and usage-based paid tiers make monthly volume an important buying detail.

Where Specifiction places it

Alternatives to SkylightAll alternatives →