worldwide rating

Daily Service
Monitor

Selene watches your sites, APIs and servers around the clock and pings you the moment anything goes down.

Clear, Simple, Insightful

Add any URL, host or port and Selene starts checking it on your schedule — most monitors are one paste away.

Every check records response time, status and SSL, building a history you can actually read at a glance.

The moment a check fails and survives your retries, the alert lands on your phone and your chosen channels.

Alerts

In-App Telegram Slack Discord Email WhatsApp Webhook Push

Tune the theme, font and accent until Selene feels like yours — right down to the glow behind the heartbeat bars.

Selene does not collect or process personal data

Your passwords, secrets and tokens are all encrypted

Built for engineers and everyone else

Of Course

You can add up to 5 monitors for free. Need more monitors, advanced checks and configurations? A simple subscription unlocks everything.

No. There are no ads anywhere, even if you only ever use the free plan.

Not yet — Selene is currently only available on iOS, but we're working hard to bring it to Android soon.