Free uptime monitoring
What is actually free across m0nitor, UptimeRobot, StatusCake and Better Stack - monitors, status pages, alert channels and commercial use, with m0nitor's own free limits stated plainly.
Twenty monitors, five-minute checks, one public status page and email alerts - with no credit card and no trial timer.
On the free plan, alerting is email only and checks run from five minutes. Chat, SMS and Telegram alerting, custom-domain status pages and the API are paid features that are rolling out.
The free plan is free forever, not a timed trial. Paid Pro and Business plans and a custom Enterprise tier add higher limits and more channels.
They reflect our research at the time of writing and are meant as a starting point. Free plans change often, so verify the current terms of each provider for your own use.