Of course it’s appropriate! From the docs this service doesn’t even meet the “viable” part of MVP! Ok a user can post some json that’s public (no authentication) and doesn’t even work across domains (CORS).

Suppose adding those things and targeting “mobile backend as a service” or even more general “backend as service” there is still a lot to be desired. Like static html, ok you’re competition is Firebase.

How’s Firebase doing these days?