$19/month for more than one task? That's fine for companies, but I'm not going to pay that much as an individual, who needs 3, maybe 5 tasks to track.
I know I could use this for 3 things on my own, but would probably rather just build it myself than pay $19/month. (although that is definitely more than reasonable if I wasn't using this for just independent projects)
I think most SLAs for these types of services are mostly pointless anyway. If something important to your business goes down, are you really going to be worried about whether or not you have to pay the $19?
EDIT: If you have reasonable default tolerances or the ability to set tolerances on tasks, I'm pretty interested in trying it out - do you integrate or have plans to integrate with pagerduty, or do you simply fire off an email?
We don't replace something like monit to make sure your process continues to run, we are validation that one-off periodic things run... things that are easy to forget about but are important.
This actually happened over the weekend:
I'd go further and say, that most of people willing to pay that much (serious about their backups and availability) already have some solution in place.
The service is very appealing for people, who don't really care that much (because it's very easy to use). I'm afraid that those people won't pay $19/mo.
Smart people go after customers willing to pay more.
Actually, I have some old cheap clients I fired some time ago... Should I send them your way? They need someone to yell at and then laugh at when the cost of their needs are quoted.