Features
Downtime monitor for websites, APIs and everything behind them
Every endpoint is checked from outside your own hosting, every 5 minutes on Starter and as often as every 60 seconds on Professional and above. Each check records the response time and the status code, so a site getting slower shows up before it goes down, and every incident stays in the uptime history for that endpoint. When something fails you get an email on every plan, and on Professional and above an automated phone call and SMS downtime alert that repeats until it recovers.
- Status code
- HTTP 200
- Response time
- 96 ms
- Last checked
- 41 s ago
- Check interval
- 60 seconds
- Uptime, 30 days
- 99.98%
- Last incident
- 5 min 04 s, recovered
Response time, last 24 hours
Every field above is written on each check, so an outage report reads from measurements rather than memory.
Monitoring
Site uptime checker
Every website and endpoint you run sits in one list, with live status, last response time and uptime percentage per row.
Web uptime monitor
Checks run around the clock from outside your hosting, so the result matches what a visitor gets.
Response time tracking
Each check stores the response time and the status code, so a slowdown is visible weeks before it turns into an outage.
Custom intervals
Set the frequency per endpoint, from 60 seconds upwards, and give the critical paths the tighter schedule.
Alerting
Phone call alerts
A confirmed failure places an automated voice call. Calls come from a fixed number, so you can let them through Do Not Disturb.
SMS and email
The same incident goes out by SMS and email, with the endpoint, the status code and the time of the first failure.
Escalating alerts
Alerts repeat on a backing off schedule until the site is back, so an outage cannot quietly stay open.
Recovery notice
Recovery gets its own message, with the measured outage length rather than an estimate.
Slack and signed webhooks
Down and recovery go into your Slack channel and, as JSON signed with HMAC SHA-256, to your own URL, with retries when your side fails.
Your whole team on email
Add teammates to each endpoint: 3 on Starter, 10 on Professional, no limit on Enterprise. Each one can unsubscribe on their own.
History and reports
Website downtime tracker
Incidents are logged with their start, end and duration, and kept per endpoint. Read them as a list, and export them to CSV when a client or a hosting provider asks for evidence.
Uptime reports
Uptime percentage and response times per endpoint, over any period you keep, with the incident log next to it.
Guides
Uptime monitor pricing
Endpoint counts, check intervals and which plan unlocks phone call alerts.
Downtime tracker
Incident logs with start, end and duration, and how long each plan keeps the uptime history.
Website monitoring for agencies
Running a client portfolio from one account, and how many endpoints each client needs.
Uptime monitoring pricing compared
What eight monitoring tools charge in 2026, and the fees that inflate the invoice.
Downtime monitoring
Expected status codes, timeouts, rechecks before alerting and authenticated API checks.
WordPress uptime monitoring compared
Five monitors for business WordPress sites, compared on interval, alert channels and price.
Server down alert
Phone call and SMS alerts for servers, APIs and health check routes, repeating until the server answers.
Pingdom SMS alerts cost
Pingdom SMS credit bundles per tier compared with plans that include calls and texts.
Ecommerce uptime monitoring
Cart, checkout and payment callback as separate endpoints, with the interval and timeout each one needs.
UptimeRobot SMS and voice credits
Credit pack prices, the burn rate of a single incident, and why bundled credits arrive only once.
SaaS uptime monitoring
App login, API and health route checks sized for a 99.9 or 99.95 percent uptime SLA.
Uptime.com pricing
Uptime.com tiers per check count, the capped SMS and call allowance, and add-on prices.
Pingdom pricing
Every Pingdom tier by check count, cost per check, and where a flat unlimited plan costs less.
StatusCake alternative
StatusCake plans and alert limits compared, and phone calls that repeat until the site is back.
Better Stack pricing
Responder licenses, monitor packs and what Better Stack costs at 5 to 650 monitors.
Better Stack alternative
Phone calls and SMS to every number on an endpoint, with no license per person.
Uptime.com alternative
Calls and texts to every number with no monthly allowance, compared with Uptime.com tiers.
Site24x7 pricing
Site24x7 plan families, monitor packs and SMS credit math at 5 to 1,000 endpoints.
Datadog uptime monitoring alternative
Move plain HTTP status checks off per test run billing to a flat plan with phone calls.
Datadog Synthetics pricing
API and browser test run rates, location math and On-Call seats at 5 to 650 URLs.
Checkly alternative
Phone calls to every number on a plan below Checkly Team, with no call credits to budget.
Checkly pricing
Plan prices, uptime monitor blocks, API and browser run overages and call credits.
Pingdom alternative
Voice calls to every on-call number and a flat price for unlimited endpoints, compared with Pingdom tiers.
Cronitor pricing
The $2 per monitor and $5 per user bill, SMS, paging and status page costs at 5 to 650 monitors.
UptimeRobot alternative
Phone calls and texts in the plan, compared with UptimeRobot prepaid credits at 2 per call.
StatusCake pricing
Every StatusCake plan, cost per monitor, SMS credits and status page plans at 5 to 650 monitors.
Oh Dear alternative
Phone calls and texts to every number on a client site, compared with Oh Dear Slack and Vonage SMS alerts.
Oh Dear pricing
Oh Dear tiers from $17 to $439, cost per site and the paging cost at 10 to 200 client sites.
Pingdom vs UptimeRobot
Both vendors compared on price per monitor, SMS limits, call credits and history, with where each one wins.
OneUptime pricing
Growth and Scale per user prices, $1 per monitor and $0.10 alerts, with the bill for small teams.
StatusCake vs UptimeRobot
Both vendors compared on price per monitor, SMS credits, phone calls, seats and status pages.
Pingdom vs StatusCake
Price at 10 to 750 monitors, SMS limits, calls, users and status pages on both vendors.
Website monitoring SMS alerts
Texts and calls to every number on an endpoint, 15 rounds until recovery, compared with SMS credits and allowances.
UptimeRobot pricing
Free, Solo, Team, Scale and Enterprise, the Solo 50 and Scale 500 tiers, seats and credits.
Uptime.com vs Pingdom
Price per check at 10 to 1,000 checks, SMS and call allowances, advanced checks and status pages.
Pingdom vs Datadog pricing
Checks on a tier against $5 per 10,000 runs, and the 15 minute interval where Datadog comes out cheaper.
New Relic uptime monitoring alternative
Keep New Relic for APM and move the night alert to calls and texts that repeat until recovery.
New Relic synthetics pricing
Allowance per edition, overage per check, full platform user prices and what phone alerts add.
Dynatrace synthetic monitoring alternative
Keep Dynatrace for journeys and APM, move one minute uptime checks and phone calls to a flat plan.
Datadog On-Call pricing
Seat prices for On-Call, Incident Management and the bundle, how seats are counted and team totals.
Grafana Cloud synthetic monitoring alternative
Keep Grafana for dashboards and k6, move one minute uptime checks and phone calls to a flat plan.
Hyperping pricing
Every plan monthly and yearly, seat costs, SMS credits, call limits and where a flat plan costs less.
Put your first endpoint under monitoring today
Add an address, pick the interval, give the number that should ring. No credit card is needed to try it.
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