One product, four plans.
Every plan, including the free one, checks websites, APIs, DNS, TCP ports and ping, and confirms a failure from a second continent before anybody is woken. Mail servers, blocklists, certificates, heartbeats and WebSockets start at the first paid tier, along with more monitors, faster checks, more locations and more seats.
Prices per month, in euro, hosted in the Netherlands. Paying yearly saves 10%. Government, non-profit and education get a discount on every paid tier.
You can use the free plan for as long as you like, without a card. It does need an account and a confirmed email address, because every alert we send goes to somebody who has shown the address is theirs.
On every paid plan, from €9
The free plan checks websites, DNS, TCP ports and ping, alerts by email and webhook, and is free for as long as you use it. Everything below starts at the first paid tier.
Websites and APIs
The status code, and then the things a status code cannot see: a phrase that has to be on the page, a JSON field that has to hold a value, a redirect that has to land where you said, a response that has to arrive inside a time you set. A site serving an error page with a 200 passes every check that only reads the number.
Email blocklists
Your sending IP against fifty blocklists, and your domain against the domain-based ones, which catch the case an IP check cannot: your domain listed while the IP that sends your mail is spotless. Most uptime tools do not check this at all, and the first you would otherwise hear of it is your mail being rejected everywhere.
Mail servers
We complete the SMTP handshake and check STARTTLS, not just whether port 25 accepts a connection. A mail server that accepts the connection and then fails the conversation loses every message sent to it, and a port check calls that healthy.
DNS that answers correctly
Not just that the name resolves, but that it still resolves to what you expect. A record pointing perfectly at somebody else's address is the failure nothing else catches.
Confirmed before you are woken
A failure is checked again from a different continent, on a different provider, before anybody is contacted. One location having a bad minute is our problem to notice and not yours to be woken for.
Certificates
Three expiry warnings, at fourteen, seven and two days, each sent once. Nothing at thirty days: that's when Let's Encrypt renews, so it would fire on every healthy certificate.
Alerts that go somewhere
Email, Slack, Teams, Discord, Telegram, PagerDuty and plain webhooks, with a staggered escalation: one address immediately, another after two minutes, the owner after forty-five. A recovery inside that window cancels the later ones rather than sending and retracting.
How much of it
The only thing that differs between the paid plans. Free is the same product with fewer types.
€0€0
Always free
For hobby and personal projects
- 5 monitors: websites, plus one each of DNS, TCP and ping
- Checks every 5 minutes
- Email and webhook alerts
- 1 seat
€10€9 /month
Billed monthlyBilled yearly · save 10%
Everything, checked every minute
- 30 monitors, any type
- Checks every minute
- A public status page
- Email, webhook and PagerDuty alerts
- 1 seat
€32€29 /month
Billed monthlyBilled yearly · save 9%
For teams running production
- 100 monitors, any type
- Checks every 30 seconds
- Custom status page address
- Every alert channel we have
- 4 seats
€77€69 /month
Billed monthlyBilled yearly · save 10%
For agencies and MSPs
- 300 monitors, any type
- Checks every 30 seconds
- 10 status pages, one per client
- Custom status page address
- Every alert channel we have
- 10 seats
Questions we would rather answer up front
- Who is the free tier for?
- Personal projects, and it is a real tier rather than a trial that expires. Five monitors, of which any number may be websites and one each may be DNS, TCP and ping, checked every five minutes from two locations on two continents, alerting by email and webhook. It stays free. Orgs and companies belong on a paid tier and get a discount if they are government, non-profit or education.
- Where does my data live?
- Personal data stays in Europe. Probes worldwide hold only the hostnames they check, never anything about you. A DPA is available for download, and EU residency is a product commitment, not a deployment detail we might revisit.
- What counts as a monitor?
- One thing checked on a schedule: a URL, a mail server, a DNS record, a certificate. Checking the same host from all locations is one monitor, not three. We do not bill per location.
Hosted in Europe
European company, European datacentres. Your personal data stays put.
Privacy and security by design
Built for GDPR from the start. DPA available for download.
Monitoring since 2002
Rebuilt from the ground up in 2026.