What UptimeRobot is
UptimeRobot monitors websites, APIs, ports and servers from the outside and alerts when they stop answering, with public status pages and a generous free plan. It is built for watching many endpoints at once, quickly and cheaply.
Side by side
- Uptime checks
UptimeRobotHTTP, keyword, ping, port, UDP and DNS monitors; every 5 minutes on Free, down to 30 seconds on Team.
KeelnestHTTP, certificate and security headers every 5 minutes on every plan, with an incident after two failed checks in a row.
- Certificate expiry
UptimeRobotSSL and domain expiry alerts 30, 14 and 7 days ahead.
KeelnestAn incident from 14 days before the certificate expires, critical at 7.
- Sign-in and checkout
UptimeRobotNo browser journeys on its pricing or product pages.
KeelnestJourneys written in plain words and walked in a real browser, after every publish and on your plan’s schedule.
- Each publish
UptimeRobotMonitors run on their schedule, independent of your deploys.
KeelnestEvery publish verified — within seconds where the host sends a deploy webhook, within five minutes otherwise, including publishes from Lovable, Bolt and Replit found on the live site.
- Payments
UptimeRobotNot found in its pricing or docs.
KeelnestStripe payments against the usual level for that hour of the week, plus webhook health.
- AI spend
UptimeRobotNot found in its pricing or docs.
KeelnestOpenAI and Anthropic usage read hourly, spikes caught within two hours.
- What an alert says
UptimeRobotThe monitor is down, with the response time and the error.
KeelnestWhat broke in plain English, the evidence, and the fix — a prompt for your builder, or a pull request on paid plans.
- Status pages
UptimeRobotPublic status pages, one on Free and more on paid plans.
KeelnestNo public status page. A public badge, and white-label client reports on the agency plans.
- Alert channels
UptimeRobotEmail and several integrations on Free; Slack, webhooks, SMS and voice on paid plans.
KeelnestEmail and Slack.
- Free plan
UptimeRobot50 monitors, checked every 5 minutes.
KeelnestOne app: checks every 5 minutes, every publish verified, one journey walked weekly and after every publish.
- Paid plans
UptimeRobotFrom $9 a month (Solo), checking as often as every 60 seconds.
KeelnestFrom $19 a month (Solo, one app); $29 for three apps; agency plans from $99.
UptimeRobot’s column is from its own pricing page and documentation on 23 September 2026; a dash means we found nothing on it there. Keelnest’s is from our pricing and what Keelnest checks.
Choose UptimeRobot if
- You want dozens of sites, APIs, ports or servers watched cheaply.
- You need a public status page for your customers.
- You need checks more often than every five minutes, or SMS and voice alerts.
Choose Keelnest if
- The app takes payments or signs people in, so “up” is not the same as “working”.
- You publish from Lovable, Bolt, v0 or Replit and want each publish checked before a customer finds the problem.
- You would rather be handed the fix than a red dot.
Or run both
Plenty of teams run both. UptimeRobot for a wide, fast ping of everything they own and a status page; Keelnest for whether the one app that makes money still works for a customer after each publish — and for the Stripe, Supabase and spend failures a ping can never see.
Questions
Does Keelnest replace UptimeRobot?
For an AI-built app, it covers the same ground — the site, its certificate and its headers every five minutes — and goes further into journeys, payments and spend. If you need many endpoints pinged every minute, or a public status page, keep UptimeRobot for that.
Why does Keelnest check every five minutes and not every minute?
Because an incident opens only after two failed checks in a row, five minutes apart, a single blip never wakes anybody. The checks after a publish and the journeys are what find the failures a ping cannot.
Can I try Keelnest without an account?
Yes. The free health check at /scan checks any public address in a few seconds: whether it answers, what it runs on, its security headers, and whether a secret key is sitting in its public code.
Sources
Read on 23 September 2026. Prices and plans change; if something here is out of date, tell us and we will correct it.