Two days ago, I updated Stellarium Mobile. On launch, it now requires that you are logged into the Play Store. No more anonymous Android usage.
I emailed the developer with what I saw in adb logcat, they came back yesterday with this:
> I see your point. The new google verification code requires a google play account it seems. It works with some third party stores, but you need a google account..
> This is probably going to be the case for most apps in the future because Google is pushing for this feature to be enabled by default for all Google Play apps at submission time..
so that's the end of being able to grab apks via Aurora (an alternative, open source client for the play store), at least if the app has any sort of billing function which is not uncommon even for open source apps (think donations). Maybe this is Google's response to the requirement to feeling threatened by needing to give up the app repository monopoly?