Uptime monitoring · down to every 10 seconds · global checks

Your client websites. In view.

up4 checks your client websites regularly and alerts you to outages. You can respond and show your clients what happened.

€9 starting credit · no card

api.yourproduct.com · HTTP · eu-central · every 10 s
up
p50 response87 ms
p95 response141 ms
stateup
last checkjust now

Simulated response times: p50 is the median (the typical response time). 95% of responses are at or below p95. Amber means slow but reachable; confirmed outages trigger an alert according to your settings.

Your first website

One website. Three steps.

  1. 01

    Add a website

    Paste an address and choose how often up4 should check. See the estimated cost before saving.

  2. 02

    Choose and test a recipient

    Choose who receives outage alerts. Send a test message and check that it arrives.

  3. 03

    Review results and respond

    See the first check result, respond to outages and share a report with your client when needed.

For public websites built with WordPress, Webflow, Shopify, Shopware or TYPO3: HTTP checks need no plugin. An additional keyword check can detect missing content. This does not test a complete checkout, page layout or your backups.

Follow the getting started guide
Ninety days, no legend needed

A quarter of asking every ten seconds.

Each cell is a day. Green needs no explanation — that is rather the point of the product.

up degraded — slow, never paged down — six minutes, one Tuesday
99.995% measured uptime · 90 days

129,600 minutes observed. Six minutes down. Two slow spells that never woke anyone.

That red cell, up close

An example: from an outage to a client report.

04:13:07

The website lakeside.example stops responding.check failed

A check fails. up4 checks again before confirming an outage.

04:13:11

Anna receives an email. She looks after the website.example alert

Your recipient and alert plan control delivery. These timings are an example, not a promise.

04:14:02

Anna reviews the incident and fixes the cause.in progress

The incident history shows failed checks and the notifications already sent.

04:19:44

The website responds again.responding

up4 checks the recovery. The recovery notice depends on the monitor settings.

08:30:00

Anna shares a report with her client.

The outage and its history are documented. Reports can use your logo and a delivery schedule.

Cadence

You choose how often we check.

Every dot is one check across a five-minute window. A 10-second interval is available on every plan here; each execution is metered or drawn from the flat plan’s monthly check budget.

up4 every 10 s · 30 checks
typical paid plan every 60 s · 5 checks
typical free plan every 5 min · 1 check
0:002:305:00

A five-minute outage is 30 chances to catch it — or one. The interval controls checking, not notification delivery. Confirmation, response times and alert settings add time.

For agencies

Your clients, kept apart. Reports in your name.

Organize websites by client. Client workspaces (Clients in the app) group monitors, incidents, status pages and reports. A workspace is not a user account. You choose separately which data to share.

Share without inviting. Hand a client a read-only share link to their own uptime — no account, no seat, no support ticket.

White-label reports. Schedule a monthly SLA PDF for each client with your logo. Its share link runs on your verified agency domain; clients open and download the report without a login.

€131 margin / month · 12 clients

Twelve clients at a €15 monitoring line, minus the €49 that covers all of them. Before your time — the checks, alerts and reports run without you.

Move the sliders yourself →

Agency · €49 a month — 500 monitors, client scoping, white-label reports and status pages.

Viewing
All clients Lakeside Verde Nordwand
4 monitors · scoped to Lakeside · share link active
For freelancers and small agencies

What do five websites cost?

Pay as you go (PAYG) means paying for usage, with a €3 monthly minimum that already includes €3 of usage.

Every 60 seconds

€3.00 / month

216,000 Checks · €1.94 usage

The monthly minimum applies; it is not added on top.

Every 30 seconds

€3.89 / month

432,000 Checks · €3.89 usage

Usage is above the monthly minimum.

Net estimate: five websites with one monitor each in one region, running for 30 days. Additional checks and regions increase usage. Custom status-page domains on PAYG cost an additional €2 per domain per month.

You receive €9 starting credit to try the product. Later top-ups start at €10; that is prepaid credit, not another monthly fee. How long it lasts depends on usage and the monthly minimum.

Calculate your own portfolio
Pricing

€9 per million checks. The meter prints the rest.

Estimate · 30-day month
432,000 checks × €9 / million€3.89
monthly minimum (includes €3 of usage)included
status page, alerts, playbooks, users€0.00
paused monitors€0.00
total / month€3.89

Phare Scale, same volume€5.00
UptimeRobot€10 · Solo

UptimeRobot: paid plans, monthly EUR billing, 11 Sep 2026. Phare: July 2026 snapshot. Feature sets differ.

No per-monitor line item, no per-user pricing, no interval upsells. The trial is capped at 50 monitors; paid PAYG has no monitor cap of its own once you have topped up. Every check and the €3 monthly minimum draw transparently from the prepaid balance. Every monitor shows its own cost before you create it.

Prefer one predictable line on the invoice? Take a flat plan; the check budget is included.

The full pricing page, including the fine print →

Every account starts with €9 credit and the full feature set — including client workspaces. All prices net.

A concrete price comparison

100 websites. 54 % lower plan cost.

100 monitors at 30-second intervals: up4 Team costs €19/month; UptimeRobot Team costs €41/month. That saves €22 each month on monthly billing.

up4 Team19 € / month

Unlimited users, separate client workspaces and white-label reports included.

UptimeRobot Team41 € / month

100 monitors, 3 users and white-label status pages; intervals from 30 seconds.

Basis: 30 days, one region, 8.64 million scheduled checks — within the up4 budget. Additional regions and confirmation checks use budget too. Public EUR list prices before tax; this comparison uses monthly billing. Paying yearly instead brings up4 Team to €15.83 a month (€190/year). Other allowances differ; these are not identical service packages. Price source: UptimeRobot · .

The quiet parts, out loud

Monitoring is a trust business. So, some facts.

● German core infrastructure

The application and primary database run in Germany. Our privacy policy names the other providers and international data paths. We run server-side statistics on our own infrastructure. How up4 is operated

● We publish our probes

Fixed egress IPs, an honest user agent, and a status page that doesn’t run on the infrastructure it reports on. The current list

● Secrets are encrypted, sessions are revocable

Channel credentials are AES-256-GCM encrypted before storage; browser sessions are opaque tokens whose hash is all we keep. You can revoke any of them, from any device.

● What we do not have

No SOC 2, no ISO certificate, no SAML. We publish that next to the things we do have, because a trust page that only lists wins is worth nothing. The gaps, named

● A person, not a pipeline

up4 is built and run by Dennis Wissmann in Düsseldorf. Support and engineering are the same desk, which is why a reply takes a day rather than a ticket queue. Say hello

● No free plan, no catch

€9 of credit, no card, every feature unlocked — up to a million checks in your first three months. The honest arithmetic

Uptime without the headache.

€9 starting credit · no card