Cronitorex as an UptimeRobot alternative

UptimeRobot is the best known free uptime monitor in the category, and its free plan is hard to argue with on volume: 50 monitors at a five minute interval. If website uptime is the only thing you need to watch, that is a lot of monitoring for nothing.

For a long time the gap was scheduled work: heartbeat monitoring, the thing that catches a backup that never ran, used to be a paid UptimeRobot feature. That changed in mid-2026, and heartbeat monitors are now part of the free plan too. So the honest question is no longer whether you can watch a cron job for free, but how much each tool tells you when one fails.

Pricing and limits were checked in August 2026. Verify current numbers on the vendor page before deciding.

What a cron failure looks like in each tool

An UptimeRobot heartbeat answers one question: did a request arrive within the expected period. That catches a job that never ran, and it is silent about everything short of that.

A Cronitorex ping monitor carries state. A job reports run when it starts and complete or fail when it ends, optionally with a duration, an exit code and a message. The alert can therefore tell you whether the job never started, started and died halfway, or finished but took three times longer than yesterday, and the dashboard keeps runtimes over time. The free plan is smaller in raw count, and each monitor carries more information:

Paid plans

UptimeRobot prices above are annual-billing rates; month-to-month billing is slightly higher. Beyond 500 monitors UptimeRobot moves to a custom Enterprise plan.

At high monitor counts of a single type, UptimeRobot is cheaper per monitor. At the point where you want jobs, endpoints and certificates in one place, with a team looking at them, the comparison flips.

Where UptimeRobot is stronger

• Free plan volume. 50 monitors for nothing is more than anyone else in the category gives away, and since mid-2026 that includes heartbeat monitors.
• Monitor variety on the network side: port, ping, keyword checks. Cronitorex does HTTP, not raw port checks.
• Scale and speed at the top end. Plans go to 500 monitors and beyond via Enterprise, with 15 second checks on Scale. Cronitorex goes down to 30 seconds on Business.
• SMS and voice alerting options that Cronitorex does not have.

Where Cronitorex is stronger

• Cron monitoring with semantics. States (run, complete, fail, skip), durations, exit codes and messages per run, not just “a request arrived”. The failure that costs you data is rarely a job that vanished outright; it is one that started and died halfway, and arrival-only heartbeats cannot see it.
• Certificate chain inspection. Not just the leaf certificate and its expiry date, but intermediates too, with separate warning and alert thresholds.
• One limit across monitor types. Fifteen monitors can be fifteen cron jobs, or five jobs plus five endpoints plus five certificates, with no repackaging.
• Config as code through the Management API, so monitors are reviewable in a pull request instead of clicked together in a UI.
• Flat pricing with seats included, rather than seats sold separately.

Running both

You do not have to choose immediately, and for a while you probably should not. A sensible split while you evaluate:

1. Leave your website checks on UptimeRobot.
2. Wrap your scheduled jobs with Cronitorex pings, reporting start and outcome, and mirror a couple of them as UptimeRobot heartbeats if you want a direct comparison.
3. After a few weeks, look at which alerts actually told you something you needed to know, and how much context each one gave you, then consolidate onto whichever tool that was.

Wrapping a job takes two lines around whatever you already run:

curl -sf "https://cronitorex.com/ping/db-backup?api_key=$KEY&status=run"

pg_dump my_app | gzip > /backups/$(date +%F).sql.gz

curl -sf "https://cronitorex.com/ping/db-backup?api_key=$KEY&status=complete"

If the middle line fails, the third one never runs, Cronitorex notices the missing complete and alerts you. See Monitoring Cron Jobs for the timeout and schedule options.

Try it

Create an account, no credit card, and put your noisiest cron job behind a ping first. That is the monitor that pays for itself fastest.