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Always watching. Always ready.

Quiet when everything's fine.
Loud when something's not.

Clear alerts like “Your website is down” or “Payments are delayed” — so you can act fast, before customers notice.

Free forever for individuals. No credit card required.

Connects to any system your business runs on.

Next.jsRailsDjangoLaravelNode.jsGoPythonRustDockerKubernetesNext.jsRailsDjangoLaravelNode.jsGoPythonRustDockerKubernetes

Three steps. Two minutes.

my-daily-backup*/5 * * * *Grace: 5 minCreate Check

Tell us what to watch

Pick the system you want to monitor and how often to check it.

# Backup job0 2 * * * /usr/bin/backup.sh&& curl -fsS https://ionhour.com/ping/abc123# Cleanup job30 3 * * * /usr/bin/cleanup.sh

Connect your system

A simple one-line connection. Works with any system, any setup.

!Check DOWNmy-daily-backup missed 2 pingsSlack #alertsSentEmail: [email protected]SentSMS: +1 (555) 012-3456Sent

Get alerted

If something goes quiet, you hear about it right away — by text, email, Slack, or however you prefer.

Integrations

Alerts where you actually work.

Get alerts in Slack, Teams, SMS, email, or wherever your team communicates. Set up in one click.

Slack
Discord
SMS
Webhooks
Email
Microsoft Teams

iOS App

Coming Soon

Your business health, in your pocket.

Your pocket on-call companion. Glance at system health, get push notifications the moment something breaks, and acknowledge incidents without opening your laptop.

9:41

Hey there! 👋

Good morning

2 of 14 Checks Down

Updated just now

AI Summary

Two checks are down. API Gateway and Landing have active incidents.

Signal Health
24h7d30d
OKLateDown
Recent IncidentsView All ›

Service Landing is down

2d agoActive 69h 10m
ACTIVE
Dashboard
Checks
Incidents
More

Your uptime starts here.

Free forever for individuals. No credit card required.

Get Started Free