Better to push a bit more for polishing than releasing a half-finished game imho. And after waiting for years, a couple of months more is ok :)

I’m using Murena’s FP4. The cloud is optional and your phone works without it. I don’t use their cloud service, and everything works just fine.

IIRC you can run Murena’s cloud services on your own server, since they released it under a free and open license.