UptimeRobot is a popular, well-established monitor with a genuinely generous free tier — bigger than ours. If your priority is the most checks for zero dollars, it's hard to beat. Here's an honest look at where it wins and where we're different — shown as a worked outage, not a column of ticks.
One outage, minute by minute, on an example Pro monitor checked every 60 seconds. The timestamps and hostnames are illustrative, not a customer's incident; the mechanics are exactly what runs.
shop.example.com from US West times out. Nothing is sent: one failure is a blip until proven otherwise. Because this is an HTTP check, a confirmation round opens straight away and the three other regions are asked to re-check the same target.Ping, DNS, domain, heartbeat and transaction checks are not re-checked from a second region, because another region's path to the target is not a second opinion for them; they still need the consecutive failures before anyone is alerted. The fastest interval is 30 seconds on Business and MSP, 60 seconds on Pro and 5 minutes on Free, so the clock above runs at your plan's interval.
The common false page is not a site going down. It is one monitoring location being refused by a site that is fine for everyone else: a WAF rule, a bot filter, a datacentre range on a blocklist.
Within your plan's monthly AI allowance (3 a month free, 50 a month on Hobby, plus a 25-use starter in a Free account's first 14 days), a confirmed outage also triggers an AI first responder that runs the checks an engineer would run first and emails the result shortly after the alert. This is the shape of that email for the outage above, with example values. Every real report is generated from live diagnostics and carries the same note: guidance, not a guarantee.
Our first responder ran the checks an engineer would in the first five minutes. Here's the diagnosis.
Verdict: shop.example.com stopped accepting connections on port 443 at about 09:13 UTC. DNS still resolves to the same address (203.0.113.24) and the network path reaches that host, so this is the server or its firewall, not DNS or routing.
Confidence: High
The responder only discusses the layers a check actually has, calibrates its confidence to how many independent signals agree, and says what it could not rule out when it is not certain. Read more in the docs.
Their free plan allows 50 monitors to our 25, and — contrary to a rumour that still circulates — their terms explicitly permit commercial and business use. If you want a simple up/down ping, the largest free allowance, and a tool thousands of people already run, start there with a clear conscience. Their $9/mo entry plan is also the cheaper way to 1-minute checks: ours start on Pro at $19, though that covers 50 monitors rather than 10.
We'd rather tell you that than have you find out after switching.
We're built for the case where a false page actually costs you something — a client relationship, a night's sleep, a pager everyone has learned to ignore. Rather than list adjectives, the three panels above show one outage end to end: how a failure is confirmed, what the alert says, and what follows it.
On top of that: built-in SSL and domain-expiry tracking; synthetic checks that walk a search, a form or an add-to-cart flow rather than just the homepage; an API and an MCP connector so you can manage monitors from Claude or Cursor, and white-label client pages for MSPs.
| UptimeTwin | UptimeRobot | |
|---|---|---|
| Free plan | 25 monitors · 5-min checks | 50 monitors · 5-min checks |
| Commercial use on the free plan | Allowed | Allowed |
| Entry paid plan | $7/mo — 25 monitors, 2-min (Hobby) | $9/mo — 10 monitors, 1-min |
| Cheapest 1-minute checks | $19/mo — 50 monitors (Pro) | $9/mo — 10 monitors |
| Fastest checks | 30 sec (Business & MSP) | 30 sec (Enterprise) |
| Confirms a down before paging | Yes — 3 failures in a row (settable), re-checked from other regions for HTTP, TCP, SSL, UDP | Yes — re-checks from other locations (published); thresholds not published |
| Runs on two independent clouds (published) | Yes | Not published |
| Alert says which layer failed (DNS / connection / TLS / HTTP) | Yes — in the alert itself | Not published |
| AI first-responder diagnosis after the alert | Yes — 3 a month free, 50 a month on Hobby | Not published |
| Multi-step synthetic checks (public flows) | Yes — Pro and up | Not published |
| White-label client pages + per-client pricing | Yes — MSP plan | Not published |
| Connect an AI assistant (MCP) / API tokens | Yes — every plan (Free: 300 calls, first 14 days) | API only |
UptimeRobot figures taken from their published pricing and terms pages on July 28, 2026; their multi-location re-check is as described on their published blog and help pages on October 7, 2026. Plans change — check their current pricing before deciding. “Not published” means we could not find a public statement either way, not that the feature is absent.
Also compare: StatusCake · Uptime Kuma · Hyperping · For MSPs