Uptime Kuma is one of the most popular open-source monitoring tools: one Docker command and you have HTTP checks, alerts and status pages. So why do teams still pay for hosted monitoring? This guide compares both approaches honestly and shows when each one makes sense.

1. What Uptime Kuma does well

  • Free and open source (MIT), with an active community.
  • Quick to start: docker run -d -p 3001:3001 louislam/uptime-kuma.
  • HTTP(S), keyword, TCP port, ping, DNS, Docker container and push (heartbeat) monitors.
  • Dozens of notification integrations and built-in status pages.
  • Can watch internal services that the internet cannot reach.

2. The hidden costs of self-hosting a monitor

The software is free; running it is not. You need a server, a reverse proxy and TLS, regular updates, backups of the SQLite/MariaDB database, and someone who notices when the monitor itself breaks. None of this is hard — but it is one more production service to own.

3. The real issue: who watches the watcher?

Most Uptime Kuma instances run on the same VPS, home lab or Kubernetes cluster as the services they monitor. When that host, its network, its DNS or its cloud region goes down, the monitor goes down too — and stays silent exactly when you need an alert. Checks from your own network also miss problems your users see from outside (DNS propagation, CDN, routing).

The fix is simple: monitor public endpoints from outside your infrastructure — either by hosting Uptime Kuma with a different provider, or by using a hosted service.

4. Side-by-side comparison

  • Cost: Uptime Kuma = server + your time · Hosted = free tier, then a monthly fee (UptimeFlux: 5 free monitors, then $7 / $19 / $39).
  • Setup: Docker + proxy + TLS · Sign up and paste a URL.
  • Maintenance: on you · managed.
  • Internal services: yes · no (public endpoints only).
  • Independent of your infra: only if hosted elsewhere · yes by design.
  • Team access & workspaces: basic · built in.

See the full table on our Uptime Kuma alternative page.

5. Which should you choose?

Uptime Kuma if you mostly monitor internal services, enjoy self-hosting and already run a separate, reliable host.

Hosted monitoring if you want zero maintenance, alerts that survive your own outages, and hosted status pages for customers.

Both is a popular answer: Uptime Kuma for the internal network, a hosted monitor for public websites and APIs.

6. Moving public monitors to a hosted service

  • List your public monitors (URL, interval, expected status/keyword).
  • Recreate them in the hosted tool (UI or API) and attach alert contacts.
  • Recreate your status page and point your status. subdomain to it.
  • Keep both running for a week, then retire the duplicates.

Conclusion

Uptime Kuma is an excellent tool; the question is not features but where the monitor lives. For anything customers depend on, make sure at least one check runs outside your own infrastructure.

Try UptimeFlux free — 5 monitors, status page included, nothing to deploy.