3 checks free, then $5/month

Your database backup has been failing for three weeks.

You'll find out when you need it.

CronSignal alerts you the moment a scheduled job doesn't run. One line of code. No SDK. No configuration.

Get Started Free → See how it works
crontab -e 
# Backup database every night at 2am
0 2 * * * /usr/local/bin/backup.sh && \
    curl -fsS cronsignal.io/ping/abc123

One line. If your job runs, we know. If it doesn't, you know.

<50ms
Global latency
99.99%
Uptime SLA
1 line
To integrate

Cron jobs fail silently.
That's the whole problem.

Your server's cron daemon doesn't care if your script crashes halfway through. It doesn't care if the disk filled up, or the API timed out, or someone commented out the wrong line. It just... doesn't run the job. And doesn't tell anyone.

You find out when a customer asks why their report is missing. Or when you reach for a backup that doesn't exist. Or when the database you thought was being cleaned up is suddenly 500GB.

Most monitoring tools alert you when something fails. But cron jobs don't "fail" in a way those tools can see. They just don't run.

That's why heartbeat monitoring exists. And that's what CronSignal does.

Three lines of config.
Zero ongoing maintenance.

1

Create a check

"Nightly backup" — every 24h — 30min grace

Your URL: cronsignal.io/ping/x7k2m

2

Add to your cron job

0 2 * * * /backup.sh && curl -fsS ...
3

We watch. You don't have to.

✓ 2:14 AM — Ping received
✓ Next expected: tomorrow 2:00 AM

No ping by 2:30 AM? You get an email. Immediately.

See everything at a glance

Your checks, their status, full history. No clutter.

Checks

Nightly DB backup
UP
Hourly report sync
UP
Weekly cleanup job
DOWN
Cache warmup
NEW

Click any check to see the full details

All Checks

Nightly DB backup

Healthy

Created Dec 15, 2025

Ping URL
https://api.cronsignal.io/ping/abc123xyz
curl -fsS https://api.cronsignal.io/ping/abc123xyz
Expected schedule Every day
Grace period 30 minutes

7-Day Overview

Thu Fri Sat Sun Mon Tue Wed
99.2% Uptime (7 days)
42 Total pings
2h ago Last ping

Ping History

2 hours ago Ping received
1 day ago Ping received
2 days ago Ping received

What you get

Instant alerts everywhere

Email, Slack, Discord, Telegram, or webhooks — within 60 seconds of a missed ping. Recovery alerts when it's back.

Configurable grace periods

Your backup takes 20 minutes? Set a 30-minute grace period. No false alarms.

Global edge network

Your ping hits Cloudflare's edge in <50ms, anywhere. Not a single server in Virginia.

Full ping history

Every check-in logged. See patterns. Debug issues. Know exactly when things broke.

No vendor lock-in

It's a URL. Curl it. Wget it. Call it from Python, Ruby, Node, Go, PHP, Bash. Whatever.

Works with everything

Linux cron, systemd timers, Kubernetes CronJobs, GitHub Actions, Laravel, Django. Yes.

Kubernetes GitHub Actions Heroku Vercel Laravel Django Rails Node.js

Get alerted your way

Instant notifications when jobs fail. Recovery alerts when they're back.

Email

Always on

Slack

Team channels

Discord

Server alerts

Telegram

Instant messages

Webhooks

Any service

Pricing that doesn't punish growth

Most monitoring tools charge per monitor. We don't.

Free

Get started with essentials

  • 3 checks
  • Unlimited pings
  • Email + Slack + Discord + more
  • Full history
Get Started Free
$5 /month

For serious monitoring

  • Unlimited checks
  • Unlimited pings
  • Email + Slack + Discord + more
  • Full history & API
Get Started Free

Start free, upgrade when you need more

Meanwhile, at other monitoring tools:

CronSignal Cronitor
10 monitors $5/month $20/month
50 monitors $5/month $100/month
100 monitors $5/month $200/month

Same features. Flat price. Your bill shouldn't scale with your infrastructure.

FAQ

How does it work?
Your cron job pings our URL when it finishes. If we don't hear from it when expected, we email you. That's the whole thing.
What if my job runs but fails?
Use && in your cron line: your-script.sh && curl cronsignal.io/ping/xxx. The curl only runs if your script exits successfully.
Why not just use Cronitor?
Cronitor is great. They charge $2/monitor. If you have 50 cron jobs, that's $100/month. We charge $5 total. See the full comparison →
What about Healthchecks.io?
Also great. Open source, solid product, free tier for under 20 checks. Once you cross 20 checks, our flat $5/mo becomes the better deal. See the full comparison →
What alert channels do you support?
Email (always on), plus Slack, Discord, Telegram, and custom webhooks. Configure them in your dashboard settings after signing up.

Your cron jobs are running right now. Probably.

Find out for sure.

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

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