I have an app that lets users mark entries as favorites. My IOS version uses the iCloud NSUbiquitousKeyValueStore so that if somebody favorites something on their iPhone, it also shows up on their iPad (assuming of course they are logged in to the same Apple ID)
I don’t have the same feature on the Android version – what is flagged on a phone doesn’t show on a tablet (or other phone).
The actual data is stored on a backend server using a UUID I generate the first time the app is launched (and promptly saved to the cloud). So all devices with the same Apple ID will have the same UUID.
My app doesn’t require any sort of login or registration – and I want to keep it that way
So far I haven’t found anything similar (and anonymous) with Android. If I had a login then Firebase or it’s equivalents would work but I don’t want the feature bad enough to require registration. But maybe I am just using to much “Apple Speak” and aren’t using the right words for Android.
Thanks in advance for any pointers or suggestions.