Highlight.io vs Checkly
A detailed comparison to help you choose between Highlight.io and Checkly.
Quick Verdict
4.4/5
Highlight.io
290 reviews
5.0/5
Checkly
100 reviews
Checkly is rated higher (5.0 vs 4.4). Highlight.io provides session replay, error monitoring, and logging for web applications. Open source and self-hostable. Combines frontend session replay with backend error tracking. Checkly enables monitoring as code using Playwright for E2E browser checks and HTTP API checks. Define checks alongside your code in TypeScript. Global check locations.
Highlight.io Session replay and error tracking for full-stack debugging | Checkly Monitoring as code with Playwright and API checks | |
|---|---|---|
| Overview | ||
| Rating | 4.4 (290 reviews) | 5.0 (100 reviews)✓ |
| Pricing model | freemium | freemium |
| Starting price | Free tier available | Free tier available |
| Best for | Full-stack development teams that need to correlate user behavior with backend errors to resolve production issues quickly. | Engineering teams who want to define synthetic monitoring tests as code in their repository |
| Tags | ||
| Tags | free tieropen sourceself hostableapi access | free tieropen sourceapi access |
| Visit Highlight.io → | Visit Checkly → | |
Highlight.io
Pros
- + Record complete user sessions with network activity and console logs
- + Search across sessions and errors with powerful filters
- + Detect anomalies and trends automatically
- + Self-host option available for compliance needs
Cons
- - Session replay storage costs grow with traffic volume
- - Setup requires code instrumentation for optimal visibility
Checkly
Pros
- + Monitoring as code in TypeScript
- + Playwright for browser monitoring
- + Works in CI/CD pipeline
Cons
- - Developer-focused — not for non-technical teams
- - Newer than Datadog synthetics
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