25 monitors free, then $15/month

Your checkout API has been down for an hour.

Your users found out first.

UptimeSignal checks your endpoints every minute. The moment something breaks, you know. Not your customers.

Start monitoring free → See how it works
or enter your email to get started

No password. We'll send a magic link.

uptimesignal — monitoring 
✓ api.yourapp.com/health     200 OK   (94ms)
✓ app.yourapp.com            200 OK   (142ms)
✗ payments.yourapp.com       Timeout  (30000ms)
  → Alert sent to [email protected]

We check. You get alerted. That's it.

1 min
Check interval
2 checks
Before alerting
<2 min
Alert delivery

Downtime costs money.
Finding out late costs more.

Your users don't file bug reports when checkout fails. They just leave. By the time you notice revenue dropped, you've lost hours of sales and trust that took months to build.

Internal monitoring misses what users actually experience. Your server says "200 OK" but the API times out from Tokyo. Your health check passes but the database connection pool is exhausted.

You need to know what your users experience — from outside your infrastructure, before they tell you.

That's synthetic monitoring. That's what UptimeSignal does.

Up and running in 60 seconds

1

Add your endpoints

https://api.yourapp.com/health

Any URL that responds to HTTP. APIs, websites, webhooks.

2

We check every minute

✓ 10:01 — 200 OK (89ms)
✓ 10:02 — 200 OK (94ms)
✓ 10:03 — 200 OK (91ms)
3

Get alerted when something breaks

✗ payments.yourapp.com — Timeout

Email in your inbox. Slack ping in your channel. Immediately.

See everything at a glance

Your monitors, their status, response times. No clutter.

UptimeSignal Dashboard showing monitor list with status indicators, response times, and uptime bars

What you get

Instant alerts everywhere

Email, Slack, Discord, Telegram, and webhook alerts within 60 seconds of detecting downtime. Recovery alerts when you're back online.

Consecutive failure checks

We verify with 2 consecutive failures before alerting. No false alarms from network blips.

1-minute checks

Pro plan checks every 60 seconds. Know about issues before they impact more users.

Response time tracking

See how fast your endpoints respond. Catch slowdowns before they become outages.

90-day history

Full history of every check. See patterns. Debug issues. Know exactly when things broke.

Monitor anything

APIs, websites, webhooks, health checks. Any HTTP endpoint. GET, POST, custom headers.

Public status pages

Share uptime with your users. Beautiful status pages included free on all plans.

Simple, predictable pricing

No per-monitor fees. No calculator needed.

Free

Get started with essentials

  • 25 monitors
  • 5-minute checks
  • 7-day history
  • Unlimited status pages
  • All integrations
  • Commercial use OK
Start monitoring free
$15 /month

For serious monitoring

  • Unlimited monitors
  • 1-minute checks
  • 90-day history
  • Unlimited status pages
  • All integrations
  • Priority support
Start free, upgrade anytime

No credit card required

Meanwhile, at other monitoring tools:

UptimeSignal UptimeRobot
50 monitors $15/month $15/month
100 monitors $15/month $30/month
Free tier commercial ✓ Yes ✗ No

Unlimited monitors. Flat rate. Your bill doesn't scale with your infrastructure.

FAQ

How does it work?
We send HTTP requests to your endpoints at regular intervals. If we get an error, timeout, or unexpected status code, we verify with a second check and then alert you immediately.
How fast will I get alerted?
Within 1-2 minutes of detecting an issue. We require 2 consecutive failures before alerting to prevent false positives from network blips.
Can I use the free tier for my business?
Yes. Commercial use is allowed on all plans, including Free. No restrictions.
What's different from UptimeRobot?
UptimeRobot's free tier prohibits commercial use. Ours doesn't. Their paid plan limits you to 50 monitors for $15/month. Ours gives you unlimited for the same price.
What alert channels do you support?
Email, Slack, Discord, Telegram, and webhook integrations are included on all plans.
What counts as a monitor?
Each URL you want to check counts as one monitor. One API endpoint, one website, one webhook — each is one monitor.

Your endpoints are live right now. Probably.

Find out for sure.

We'll send you a magic link. No password to forget.

Already have an account? Log in

Running scheduled jobs or cron tasks?

CronSignal alerts you the moment a cron job doesn't run on schedule.

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