Freemium
Checkly
Monitors written as Playwright scripts, run from where your users are
What it is
Everything else on this shelf tells you about a request your own servers already saw; this runs the real signup flow from outside, on a schedule, from the regions you care about, and pages you when a step breaks. It watches from the outside, so it tells you that checkout failed without telling you why — it pairs with an error tracker rather than replacing one, and the bill scales with frequency multiplied by locations.
