Checkly and SignupCanary
Checkly is a mature synthetic monitoring product for teams who script many browser and API checks. SignupCanary is narrower on purpose.
- Lovable
- Cursor
- Claude Code
- Replit
- Bolt
- Stripe
Where Checkly fits
If you already write Playwright tests, care about multi-step API monitoring, or need a platform your SRE team will live in, Checkly is the more general tool. SignupCanary does not try to replace that.
Where SignupCanary fits
If you shipped with Lovable, Bolt, Replit, Cursor, or Claude Code and you want a yes or no on signup and checkout, plus a prompt you can paste back into that builder, this is the smaller product. The free check runs without an account. The paid plans add a deploy hook and a simple Stripe event watchdog, not a general monitoring suite.