Android Question using firebase auth/storage without google play services

[Rhonan]

Hi,

I'm trying to develop an android app that uses AOSP, so does not have google play services.
According to firebase, some aspects of firebase do not require google services

Dependencies of Firebase Android SDKs on Google Play services | Firebase for Android

firebase.google.com

I see that it requires google gradle.


So, is it possible to use Firebase with a non-google android system?

If not, could anyone recommend an alternative cloud file storage system.
R