How do I make my paid application that I published on Google Play not allowed to be installed outside

Question

How do I make my paid application on Google Play not allowed to be installed outside Google Play or to take a copy of it such as an Apk and install it?

Answer 1

You cannot prevent someone to take your APK and install it.

The things you can try to do would be :

Prevent the Reverse Engineering by protecting your APK : Please read this post

Also, you can control group of user who will be able to download your app with the play store private channel feature