Free plan, commercial use allowed
Know the moment your site
stops working
Monitor uptime, SSL expiry, security headers, API responses and regional availability from one place, and get alerted by email, Slack or webhook before your users notice.
No credit card required.
Everything that can break, watched
One tool for the checks teams usually stitch together from several.
- HTTP uptime
- Check your endpoints on a schedule and track status and response times, with retries so one blip does not wake you up.
- SSL expiry
- Get warned well before a certificate expires, so renewals never turn into an outage.
- Security headers
- Grade your response headers and get alerted when a deploy removes or weakens one.
- JSON schema validation
- Verify that your API still returns the shape your clients depend on, not just a 200 status.
- Geo availability
- Check that your site is reachable from multiple regions, including places that are hard to test from.
- Alerts where you work
- Email, Slack or a custom webhook, with cooldowns and recovery notices so alerts stay useful.
Set up in minutes
Three steps from sign-up to your first alert.
-
1
Add a monitor
Enter a URL and choose what to check: uptime, SSL, headers, JSON schema or regional availability.
-
2
Choose alert channels
Send alerts to email, Slack or a webhook. Channels are verified before they receive anything.
-
3
Get alerted, then relieved
Hear about downtime, expiring certificates and header regressions, and get a recovery notice when things are back.
Start free, upgrade when you need more
The free plan can be used commercially. Paid plans add monitors, faster checks and longer history.
free
$0 /mo
- 15 monitors
- Checks every 3 min
- 30 days history
starter
$9 /mo
- 50 monitors
- Checks every 1 min
- 180 days history
pro
$29 /mo
- 200 monitors
- Checks every 30 s
- 365 days history
- Geo availability
- JSON schema validation
business
$79 /mo
- 500 monitors
- Checks every 30 s
- 365 days history
- Geo availability
- JSON schema validation
Find out first, not from your users
Create a free account and add your first monitor in under a minute.