Your Monitoring Tool Waits For Users to Complain. Synthetic Checks Do Not.
Visual Sentinel checks from EU and US on a plan-based schedule, with regional request timing, SSL, DNS, and optional visual or content monitoring.
Permanent Free plan, or a 10-day card trial of paid coverage from $6/month.
What Is Synthetic Monitoring?
Synthetic monitoring uses automated checks from external locations on a fixed schedule, so it can detect problems even when no real visitor is active. That makes it useful for low-traffic sites, staging systems, overnight coverage, and consistent regional baselines. Real User Monitoring (RUM) answers a different question. It collects performance data from actual visitors and reflects their devices, networks, and locations, but it only produces evidence when users are present. Many teams use synthetic checks for proactive coverage and RUM for field experience. Visual Sentinel can combine uptime availability, regional request timing, SSL certificate health, DNS state, visual regression, and content validation in one dashboard. The layers and schedules are plan-specific: Free includes 10-minute uptime and SSL checks, Solo and Starter use 5-minute uptime checks, Business and Agency use 1-minute uptime checks, Solo captures visuals every 30 minutes, and Starter or higher captures visuals every 15 minutes. EU and US check regions help surface location-specific failures. Alert-channel availability also depends on the plan, with email and browser push on Free and additional integrations on paid tiers.
Built for issues
customers actually notice.
Proactive Detection
Run scheduled checks around the clock, including during low-traffic periods. The exact uptime and visual intervals depend on the plan.
Multi-Region Testing
Automated checks from EU and US regions surface location-specific failures that single-region tools miss entirely.
No Traffic Required
Unlike RUM, synthetic monitoring works on staging sites, low-traffic pages, and brand-new launches with zero visitors.
Consistent Baselines
Fixed-interval checks from controlled infrastructure produce clean performance trends without the noise of variable user conditions.
6-Layer Depth
Eligible plans combine uptime, performance, SSL, DNS, visual regression, and content evidence in one dashboard.
10 Channels + Web Push
Free includes email and Web Push. Starter adds Slack, Discord, and Telegram. Solo, Business, and Agency add WhatsApp, Teams, incident tools, webhooks, and Prometheus.
Three steps,
no extensions.
Add Your URLs
Enter the public pages or endpoints you want monitored and choose the checks relevant to each target.
We Check From EU and US
Regional uptime checks follow your plan interval. Visual captures and scheduled performance checks run on their own documented cadences.
Route Confirmed Alerts
A result that passes the configured confirmation, retry, and delay rules enters the notification workflow for channels available on your plan.