Keep uptime and SSL
Every check confirms the site responds and that the certificate and DNS are healthy.
updown.io is a simple, affordable uptime and SSL monitor with response-time tracking. If you are comparing alternatives, the question is whether you also want rendered page-health checks and user journeys as you grow.
Start your 7-day trial — no credit card, free plan after.
Simple uptime and SSL, plus the rendered page health and journeys a status check misses.
Both cover uptime and SSL simply; the difference is depth into rendered page health and journeys.
| Criteria | NorthDuty | updown.io |
|---|---|---|
| Core focus | Website health and journeys with uptime, SSL, and DNS | Simple uptime, response time, and SSL monitoring |
| Catches 'up but broken' | Yes — blank pages, JS errors, broken resources, and failed journeys | Focused on availability and response time rather than rendered UI failures |
| User journeys | Plain-text or AI-suggested multi-step journeys | Not a focus |
| Best for | Sites where important pages and flows drive revenue or signups | Personal sites and simple services wanting low-cost uptime |
updown.io is deliberately minimal: it checks that a URL responds, tracks response time and an Apdex-style score, and watches SSL expiry, at a very low price. For a personal site or a simple service, that is often all you need.
The gap shows up as the site becomes more business-critical. A page can respond quickly and still be blank, a button can disappear, or a checkout can stop completing — and a response-time-and-status check will report everything as healthy while conversions quietly stop.
Once a site drives real revenue or signups, 'it responded in 200ms' is not enough. You need to know the page actually rendered, the key elements are present, and the important journeys still complete.
NorthDuty keeps the simple signals — uptime, response health, SSL, DNS — and renders each page to catch blank pages, JavaScript errors, and broken resources, then adds plain-text or AI-suggested user journeys, with alerts to email, Slack, and more.
NorthDuty keeps updown's simplicity in spirit and adds the rendered layer.
Every check confirms the site responds and that the certificate and DNS are healthy.
Each check loads the page in a browser to catch blank pages and script errors.
Deploy detection re-runs health checks and journeys, so a release that breaks a page is caught quickly.
Confirm signup, login, and checkout complete with plain-text or AI-suggested journeys.
Review the product pages and supporting content that explain the monitoring depth behind the comparison.
Feature
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
Learn how NorthDuty combines editable user journeys and website health checks in one website monitoring project.
Explore Website MonitoringArticle
Learn why websites can break without going fully offline and how website health monitoring helps detect silent failures.
Read Why Websites Break Without Going OfflineArticle
How often should you check your website? Monitoring frequency by site type, what 1, 5 and 15-minute checks mean, and how to balance speed against noise.
Read How Often to Monitor Your WebsitePricing
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 plansAnswers to common buying questions for teams comparing monitoring options.
If you want more than simple uptime and response-time checks, NorthDuty adds rendered page-health checks and user journeys while still covering uptime, SSL, and DNS.
Yes. NorthDuty checks availability and response health, and also renders the page to catch failures that a status-and-timing check would miss. There is even a free response-time checker tool.
When your site drives revenue or signups. At that point 'it responded' is not enough — you need to know the page rendered and the key journeys still complete.
Choose NorthDuty when you want updown-style simplicity plus rendered page health and user journeys that catch failures a status check misses.
7 days with Pro features and limits, no credit card — then keep one daily journey on the free plan.