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Cassian™ vs UptimeRobot

The ping came back fine. The orders didn’t come back at all.

UptimeRobot is a well-built, inexpensive uptime monitor, and for “is the site responding?” it is hard to argue with — a free tier, generous monitor counts and checks from multiple regions. What it is not built to do is read your store. This page sets out exactly where the two overlap, where they do not, and which one you actually need.

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Fifty monitors, all green, and a payment gateway that had been declining every card since 6pm.

Side by side

Every row says which tool it favours, including the 4 that favour UptimeRobot. If something here is out of date, tell us and we'll correct it.

Free tier

UptimeRobot
Cassian™
Free Inspector plan: zero-order alerts, daily page speed, weekly scans, link checks. No availability checks.
UptimeRobot
Free tier with a large monitor allowance at 5-minute check intervals.

Availability check interval

Comparable
Cassian™
Every 5 minutes on Protector and Guardian; every minute on Prime and Enterprise.
Protector and above
UptimeRobot
Every 5 minutes on the free tier, faster on paid plans.

Check regions

UptimeRobot
Cassian™
One region.
UptimeRobot
Multiple regions, so a country-specific outage is distinguishable from a global one.

Status pages

UptimeRobot
Cassian™
Not offered.
UptimeRobot
Included, with custom domains on paid plans.

Detects orders stopping

Cassian™
Cassian™
Yes — order counts read from your platform’s API and compared against a weighted historical baseline; a zero-order period raises a critical alert.
Every plan, including free
UptimeRobot
No. Order data is not read; a store with a broken checkout still returns a healthy response.

Detects price errors

Cassian™
Cassian™
Yes — daily catalog diff with $0 prices and inverted sale prices classified critical, and bulk changes grouped.
Every plan with a connected store
UptimeRobot
No. Catalog data is not read, so a mispriced variant returns the same healthy response as a correct one.

SEO, schema, links and images

Cassian™
Cassian™
Deterministic page checks on every scan, plus link and image validation and daily Core Web Vitals.
Every plan
UptimeRobot
Not in scope. Keyword monitoring can confirm a string is present on a page, which is a different job.

SSL and domain expiry

Comparable
Cassian™
Both, checked daily and alerted as a countdown.
Protector and above
UptimeRobot
SSL expiry monitoring is included; domain registration expiry is separate.

Price of the plan you would buy

UptimeRobot
Cassian™
$129/month for Protector, where availability monitoring begins.
UptimeRobot
Free for basic monitoring; paid tiers in the region of $7/month and up.

UptimeRobot details checked 4 September 2026, from UptimeRobot pricing and UptimeRobot features. Plans and features change; we recheck periodically and correct errors on request. UptimeRobot is a trademark of its owner and is named here for identification only.

Choose UptimeRobot if…

  • Availability is genuinely all you need, and you would rather spend nothing on it.
  • You want checks from several countries, or a public status page for customers.
  • You are monitoring lots of endpoints — APIs, staging sites, third-party services — not one storefront.
  • You already have order and price monitoring covered somewhere else.

Choose Cassian™ if…

  • The incident you actually worry about is the store being up and not selling.
  • You want price, stock and catalog changes watched as well as availability.
  • You would rather have one alert stream by severity than several dashboards.
  • You run more than one store, or more than one platform.

FAQ

Common questions

Is Cassian™ an UptimeRobot alternative?
Only partly, and it is worth being straight about it. If you want a cheap, reliable, multi-region uptime monitor with a status page, UptimeRobot does that job well and Cassian™ is not trying to undercut it. Cassian™ replaces it only if what you actually needed was store monitoring — orders, prices, stock and availability together — and availability alone was as close as you could get.
Can I run both?
Yes, and it is a reasonable setup. Keep UptimeRobot for multi-region availability and the status page; add Cassian™ for the checks that read the store’s own data. They overlap only on availability.
Why does Cassian™ charge more for uptime?
Because uptime is not what you are buying. Availability checks are the cheapest part of what Cassian™ runs; the plan price covers order-flow analysis, daily catalog diffs, page scans, link validation and the alerting layer around them. If availability is all you need, a dedicated uptime monitor is better value and we would rather say so.

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