Sometimes you get what you pay for. Personally I would not want my data managed by a company that doesn't even have a team page or mailing address (let alone security details) and appears to be using a Bootstrap template for their website.
Just looked it up. I don't know how I've never come across this. Reading the docs quickly it seems like this is cheaper and easier/more intuitive to set up than any other auth service. Will definitely be trying it with my next project, thank you.