I didn't see any competitors in the space solving the problem the way I would solve it (good UX + a focus on developer-experience), I wanted an uptime monitor that didn't piss me off with my own freelance clients, and I figured if there was room for a 200th competitor, chances are there would be room for a 201st.

Nice. I am also interested in the consulting -> discover problem -> saas route. I reckon your customers really are buying for their existing trust in you.

Highly likely.

I've also spent a year or two consistently writing about React and building an audience, and the service can monitor React apps too.

That's great, thanks!