Please, I need your help.
I did some research in the community, but found nothing about this topic.
I have an app, which stores data, but watches when other users install the same app, they end up having the same data data.
How to make for each application user to have access only to their registered database?
as @pipechela said, when user registered to your app, make a new bucket for him to store and get there own data, you can use his phone number as bucket or device id,
So, does each apk downloaded from play store generate an identification for that user? And automatically generates a new balance to generate your data data?