Be the first to know when your sites slow down
Site health watchduck for developers and site maintainers. We continuously monitor your site's speed and health, learning its normal behavior so we can alert you when it degrades.
Pay-as-you-go site monitoring with 3-location verification, 6 daily Lighthouse audits, and automated learning baselines so you never configure thresholds manually. Built by and for engineers and developers, running on self-owned bare metal, with a 4-hour alert cooldown.
Performance intelligence, not just uptime
Adaptive intelligence
We built notiduck to alert accurately. Our models learn your server's normal behaviour from multiple locations, so you only hear from us when something actually changes.
TTFB breakdown
We measure DNS, TCP, TLS, and server wait time from each location. You see exactly where the delay is, not just an average.
SSL, domain, and SEO health
Track SSL and domain expiry, WWW canonicalisation, and SEO basics. Every check produces a 100-point health score so you can see how your site is doing at a glance.
Core Web Vitals, every 4 hours
We run full Google Lighthouse audits every 4 hours. Track the Core Web Vitals that affect your search rankings and user experience. We keep your reports for a full week, each sharable via a public URL.
Triple-geo verification
When a site appears to go down, notiduck verifies the outage from 3 geographic locations before sending an alert. If one node detects a problem, the other two double-check: no more flaky false positives.
Anti-alert fatigue
When your site is unstable and flapping, notiduck sends one verified alert, then enforces a 4-hour cooldown on duplicate notifications. You get the data you need, then silence to fix it.
Celebration alerts
We don't only message you when things break. When your Lighthouse scores improve because you shipped a fix, the Watchduck lets you know. Optimization is hard work: you deserve the high-five.
Pay-as-you-go pricing
Running on self-owned bare metal, not VC money. 3 EUR/month per site, pause anytime. Our pricing is structurally permanent, not a temporary undercut.
Alerts you actually want to get
One alert, then silence
When your site is flapping between up and down, traditional monitors send you a flood of notifications. Notiduck sends one verified alert, then enforces a mandatory 4-hour cooldown. You get the data you need, then silence to fix it.
Celebrate the wins
Most monitors only message you when something breaks. Notiduck also alerts when your performance numbers improve. When your Lighthouse scores jump because you shipped an optimisation, the Watchduck lets the team know. Optimisation is hard work: it deserves recognition.
Built for developers, not agencies
Monitoring hundreds of sites
If you manage a digital agency with hundreds of client sites, your approach to monitoring needs to be strategic. Let's be honest: your sites likely share core boilerplates, plugins, and hosting layers. If a bad dependency update breaks one, it often breaks them all.
You don't need to monitor every single one with advanced tools. For basic pings on every site, self-hosting Uptime Kuma on a VPS is the most efficient path.
But if you're a control freak who needs to catch the subtle performance regressions that pings miss, use Notiduck to monitor a representative subset of your core tech stacks. We're built for engineers who want managed peace of mind for their most critical assets without the maintenance overhead of managing hundreds of advanced dashboards.
Why is Notiduck so affordable?
Notiduck is built on a foundation of structural efficiency. We run on our own bare-metal infrastructure, which is already sustained by our other profitable software projects. This means we aren't burdened by high overhead or external growth pressures.
Because our baseline costs are already covered, we can offer sustainable, pay-as-you-go pricing that reflects the actual cost of running the service. Our pricing is straightforward: 3 EUR/month per site, pause anytime. No fixed subscriptions, no hidden tiers, just simple engineering value.
Frequently asked questions
How is this different from standard monitoring tools?
Standard monitors are noisy. They use hardcoded thresholds that trigger on transient network blips, leading to alert fatigue. We use a multi-location consensus engine to only alert you when the shift is real and verified.
How does Notiduck prevent false positive alerts?
When a site appears to go down, we don't alert based on a single check. Notiduck verifies the downtime from 3 geographic locations before sending a notification. If one node detects a problem, the other two double-check. This eliminates false alarms caused by localized network routing issues, CDN blips, or temporary DNS hiccups.
What does notiduck actually do?
We ping your site every 5 minutes from 3 locations and run a Google Lighthouse audit every 4 hours. We build a statistical baseline per location and alert you when your Core Web Vitals or response times shift significantly. Think of it as performance intelligence that actually learns your server's health.
What counts as an anomaly?
We watch for sustained shifts in your site's performance. A sudden spike in one location. Multiple locations degrading together, which usually points to the origin server. Or one region falling behind while others stay healthy, often a CDN or regional network issue. Each alert includes the actual measurements so you know exactly what changed.
How often do you run Lighthouse?
Every 4 hours on a rolling window with randomised jitter, sampling every behavioral quadrant of your site's performance. We don't just check for SEO; we use Google Lighthouse as a diagnostic sensor. If your Core Web Vitals start to degrade, it often points to a server redlining or a resource bottleneck that simple uptime checks might miss.
What is in a downtime alert?
A screenshot captured from Gravelines at the moment we detected the issue, the HTTP status code or error class, the TTFB at the time of failure, and which locations agreed on the outcome. Useful for spotting maintenance pages, config errors, and blank 5xx responses without having to open the dashboard.
What notification channels are supported?
Email notifications are free and included with every monitor. SMS alerts are available as an optional paid add-on for critical incidents.
Will Notiduck spam me with notifications during an outage?
No. When an outage is confirmed, Notiduck sends exactly one notification, then enforces a 4-hour cooldown on duplicate down alerts. If your server is unstable and flapping between up and down, you won't get 87 messages in 20 minutes. You get the data you need, then silence to fix it.
Does Notiduck only notify me when things break?
No. Notiduck also sends celebration alerts when your performance numbers improve. If you deploy an optimization and your Lighthouse score jumps, the Watchduck lets you know. Optimization is hard work: you deserve the high-five.
How far in advance do you alert for SSL and domain expiry?
We track both continuously and alert 7 days before expiry. Enough warning to renew without a late night panic.
Can I add multiple sites?
Yes. Every site you add is monitored from all 3 global locations at a 5 minute cadence, billed at a flat rate. No per site limits, no tiers. If you prefer not to manage manual refills for a large fleet, we can configure custom auto-top-ups for your account upon request.
Where are you hosted?
Everything is EU owned and hosted. Our current monitoring locations are France (Gravelines), Finland (Helsinki), and North America. Even our global locations run on EU-governed infrastructure, ensuring the highest standards of data privacy and security.
Do you also monitor competitor prices?
Yes, as a separate product at price.notiduck.com. Same account, same credit pool.
Who is Notiduck NOT for?
If you manage hundreds of client sites, we recommend a hybrid approach. Use a self-hosted tool like Uptime Kuma for basic pings across your entire fleet. Then, use Notiduck for your most critical sites where you need advanced performance baselining and Lighthouse audits. This gives you the best of both worlds: total coverage for pings and deep intelligence for your primary assets.