Firebase and Back4App alternative

I see here in Indie Hackers that many are looking for technical partners. They need them typically for the backend, hosting servers and devops related stuffs I guess. Because the frontend part doesn't have some very big learning curve to make a MVP with a simple, clean UI and UX. So, they can figure some something out for frontend.

My idea is to build something like a Web UI to build a complete backend.
The users don't know what database is being used or the framework that is used. All that they need to do is to drag and drop some tiles and then puff backend APIs are ready.

USP:
I tried both Firebase and Back4App. And, Firebase, they advertise as a backend as a service. But, it's more like a database as a service.
Back4App is a clean Baas. But, non tech would suffer there to create an API.
So, I would like to concentrate on the UX more to make it very ease of use for a non tech person and powerful too.

What do you guys think about this one. If you're a non-technical founder or in a related category, would you use it?

If you need to talk about this. Please contact me @ajayrajtweets