I've been testing the Google Play Licensing extension, and it appears to work (at least on its own), which is great. @Nocturne 's official instructions say that you must enroll in Google Play App Signing for licensing to work. However, in my testing, this does not appear to be the case. I've tried sideloading an app (it appropriately complains), doing a new install and disabling the internet (ditto), enabling internet to let it check (it appropriately stops complaining), and everything seems fine. Can anyone else verify that, contrary to the instructions, you can skip App Signing? I'd hate to have something bite me down the road. The reason that I'd prefer to avoid App Signing is because Google seems to indicate that enrolling in app signing will trigger the app-bundle requirement that's been bedeviling Android devs lately, and I wanted to push off that headache if I could (hopefully until YYG implements a native fix). Google is still allowing me to update using APKs.