Loadster Synthetic Monitoring runs scheduled checks of websites, web apps, and APIs from outside your infrastructure. You can create monitors with Browser Bots, Protocol Bots, or Playwright Test scripts in JavaScript or TypeScript. A script can check one page or endpoint, or follow a sequence such as logging in, navigating, and submitting a form. Checks can run as often as every minute or as rarely as once a day, using one or more of eight listed monitoring locations across five continents. Browser Bot and Playwright checks collect TTFB, FCP, LCP, and CLS metrics; cycles retain logs and traces, with screenshots for browser checks and request-response details for Protocol Bots. Alerts can use email, SMS, phone calls, webhooks, Slack, PagerDuty, Opsgenie, or VictorOps. Hosted status pages can share selected status and uptime history privately or publicly. For inaccessible sites or specific locations, monitors can run on a self-hosted Loadster Engine. Pricing is listed from $29/mo, with a free plan and free trial.
Who it is for
It suits teams that need scheduled checks for websites, web apps, or APIs, including sites that are not publicly accessible. Loadster also offers professional services for organizations seeking performance engineering support.
What is good
- Checks can run as frequently as every minute.
- Supports multi-step scripted journeys.
- Offers eight locations across five continents.
- Retains logs, traces, and relevant check details.
- Hosted status pages support private or public sharing.
What to know first
- Pricing is listed from $29/mo.
- Some sites require a self-hosted Loadster Engine.
- Hosted custom domains require control of DNS.
Verdict
Loadster combines scripted monitoring, diagnostics, alerts, and status pages, with options for public or self-hosted checks. Consider its listed starting price and whether your monitoring needs require a self-hosted engine.
Get started with Loadster Synthetic Monitoring
- Visit https://loadster.com/synthetic-monitoring/.
- Create a free account with 50 starter units; no credit card is required.
- Choose a Browser Bot, Protocol Bot, or Playwright Test script.
- Set the check flow, schedule, and monitoring locations.
- Configure alert channels and incident behavior.
- Use a hosted status page or run monitors from a self-hosted Loadster Engine if needed.
What the free plan stops at
The free account provides 50 starter units per new account, with no monthly refill. The listed paid options include monthly fuel plans and one-time pay-as-you-go fuel purchases.
Questions about Loadster Synthetic Monitoring
Does Loadster Synthetic Monitoring have a free plan?
Yes. A free account includes 50 starter units per new account and does not require a credit card; the units are not a monthly refill.
How much does it cost?
The listed starting price is $29/mo. Specific options include a 1K Monthly Fuel Plan for $77.00 USD per month and Pay-As-You-Go Fuel — 1,000 units for $97.00 USD per once.
Which platforms does it support?
The listed platforms are API, extension, self-hosted, and web.
Where can monitors run?
The product page lists eight dedicated monitoring locations across five continents. Monitors can also run from a self-hosted Loadster Engine.
What alert channels are available?
Alerts can go to email, SMS, phone calls, webhooks, Slack, PagerDuty, Opsgenie, and VictorOps.
Can it publish a status page?
Yes. Hosted status pages can share selected monitor status and uptime history privately or publicly. Custom domains are supported when the customer controls DNS.
Loadster Synthetic Monitoring plans and pricing
All plansCompared on performance testing software
- Free plan
- No
- Paid from
- $29/mo
- Check frequency
- 1 min
- Response assertions
- Yes
- Multi-region checks
- Yes
- Private locations
- Yes
- Incident workflows
- Yes

