Monitoring for people who own the code, the uptime, and the customer emails.
You own production. Holter gives you uptime checks, cron and backup heartbeats, alerts, and a status page in one — no sales call, no implementation project, no enterprise observability bill.
No credit card · free plan · up and watching in minutes.
Outbound checks · we ping them
Inbound heartbeats · they ping us
Uptime · last 34 days
Live demo — Holter detects, alerts, and recovers on its own.
The problem
As a founder, you find out about problems last: a customer emails that the app is down, a job that bills people quietly stopped, a certificate expired on a Saturday. The tools that catch all of that are built for teams with an ops function — heavy to set up and priced for a company you are not yet.
Set up in three steps
Watch what customers hit
Add uptime and response-time checks for your site and API — SSL and domain expiry included.
Watch what runs behind it
Add heartbeats for the crons, queue workers, and backups that keep the product running.
Route alerts and publish status
Send alerts to email, Slack, Discord, or a webhook, and turn on a status page your customers can check themselves.
What Holter does
Holter covers the failures customers notice first, without the enterprise stack. Outside-in checks for your site, API, SSL, and domains; inbound heartbeats for crons, queues, and backups; alerts to the channel you actually watch; and a status page that updates itself from the same monitors. You can set the whole thing up yourself in an afternoon.
- ✓ Uptime, heartbeats, alerts, and status pages in one product
- ✓ No sales call, no implementation project, no boss approval
- ✓ No server agent and no cloud keys — Holter watches from outside
- ✓ Free for 5 monitors; upgrade only when you outgrow it
Simple, transparent pricing
Free covers a first real set of monitors with no card. Pro is the natural home for a production SaaS — faster checks, more monitors, custom-domain status pages — at $15/mo.
Free plan needs no card. Every paid plan includes a 14-day free trial.
See full pricingQuestions, answered
Yes. You sign up and configure everything yourself. There is no demo gate, no onboarding project, and no procurement.
No. Holter checks your services from the public internet, and your jobs ping it for the parts it cannot see from outside. Nothing runs on your servers.
No. Free covers 5 monitors with no card; paid plans start at $15/mo. It is built for founders, not enterprise budgets.
Start with the things that fail silently: your health endpoint, your SSL cert, and your most important nightly job. Add the rest as you go.
Monitoring for people who own the code, the uptime, and the customer emails.
No credit card required. Free plan available.
Start monitoring free