1
Use Sentry for application-level diagnosis
Sentry connects uptime failures, stack traces, breadcrumbs, session replay, and distributed traces to help engineers find code-level causes.
NorthDuty vs Sentry
Sentry is a developer-focused application monitoring platform with errors, tracing, replay, profiling, cron monitoring, and HTTP uptime checks. NorthDuty focuses on rendered website health and scheduled multi-step user journeys without requiring application instrumentation.
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Catch broken pages from the outside in, not just exceptions in your code.
NorthDuty vs Sentry
Choose based on whether you need application observability with HTTP uptime or managed browser-level page and journey monitoring.
| Criteria | NorthDuty | Sentry |
|---|---|---|
| Approach | Proactive outside-in monitoring on a schedule | Developer-focused error, tracing, replay, profiling, cron, and HTTP uptime monitoring |
| Setup | Add a base URL — no SDK or code changes needed | Uptime checks can monitor configured URLs without an SDK; application errors, traces, and replay use Sentry SDK instrumentation |
| User journey monitoring | AI-suggested or plain-text flows, no code | The reviewed product pages list HTTP uptime checks and Session Replay, not scheduled multi-step browser transactions |
| Best for | Detecting page failures before users report them | Correlating uptime failures with application errors and distributed traces, then debugging code-level causes |
| Business teams | Readable by marketing, product, and agency teams | The product and setup experience are explicitly developer-focused |
Application observability vs. browser-level website verification
Sentry combines instrumented application telemetry with HTTP uptime monitoring. Its uptime checks can validate URLs, response codes, headers, bodies, JSON properties, and failure thresholds, then connect failures to related traces and errors.
NorthDuty runs full-browser page analysis and scheduled customer journeys. It is designed to catch rendered blank pages, failed resources, missing UI, and multi-step flow failures without adding an SDK to the monitored application.
Why outside-in monitoring catches different problems
NorthDuty checks website health from a browser context on a schedule: HTTP, SSL, DNS, blank pages, failed resources, JavaScript errors, and API call results — all without touching your source code or needing a Sentry SDK.
User journeys catch broken flows that error monitoring can miss entirely. They verify that login, signup, checkout, and form submission still complete end to end on a schedule, surfacing failures before customers do.
How NorthDuty complements Sentry
The products overlap on basic uptime but provide different evidence beyond it.
2
Use NorthDuty for rendered page checks
NorthDuty checks blank pages, missing CTAs, failed resources, and browser-side API calls from outside the codebase.
3
Re-check after every deploy
Deploy detection re-runs health checks and journeys, surfacing breakage that errors alone do not catch.
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Run critical user journeys on a schedule
Automatically verify login, signup, checkout, and form submission regularly — without writing or maintaining Playwright scripts.
Explore Related NorthDuty Pages
Review the product pages and supporting content that explain the monitoring depth behind the comparison.
Feature
Website Monitoring
Learn how NorthDuty combines editable user journeys and website health checks in one website monitoring project.
Explore Website MonitoringFeature
Uptime Monitoring
Monitor uptime every 5 minutes by default with HTTP, SSL, DNS, blank-page detection, broken resources, JavaScript errors, and API call tracking.
Explore Uptime MonitoringFeature
User Journey Monitoring
NorthDuty runs your checkout, signup, login and form flows in a real browser on a schedule and reports the exact step that failed, with a screenshot.
Explore User Journey MonitoringArticle
How to Monitor JavaScript Errors on a Website
Two ways to monitor JavaScript errors: an SDK that reports what real visitors hit, and a scheduled browser check that finds them without touching the site.
Read How to Monitor JavaScript Errors on a WebsiteArticle
Why Websites Break Without Going Offline
Learn why websites can break without going fully offline and how website health monitoring helps detect silent failures.
Read Why Websites Break Without Going OfflinePricing
Pricing
NorthDuty plans are sized by how many checkout, signup and login journeys you monitor: Free, $29 Starter, $79 Pro, $199 Business. 7-day trial, no card.
Compare pricing plansFrequently Asked Questions
Answers to common buying questions for teams comparing monitoring options.
Is NorthDuty a Sentry alternative?
For rendered website health and scheduled user journeys, NorthDuty can be an alternative. For application error monitoring, traces, profiling, and session replay, Sentry serves a different and often complementary purpose.
Does NorthDuty require SDK integration?
No. NorthDuty monitors websites from the outside using a base URL. No code changes or SDK installation required.
Can I use NorthDuty and Sentry together?
Yes. Sentry can provide application telemetry and HTTP uptime, while NorthDuty adds rendered page-health checks and scheduled multi-step journeys.
Start monitoring your website with NorthDuty today.
Use NorthDuty to proactively monitor website health and user journeys — no SDK or code changes required.
7 days with Pro features and limits, no credit card — then keep one daily journey on the free plan.