Secure Apk Encryption?

So as usual there are a lot of people asking me to share the .apk (which I won’t, because I believe in going through the proper channel and helping the company who puts this software out there). I was wondering, however, if there is an encryption to it in order to ensure that no one can just rip the apk or some sort of annoyance that makes the software so frustrating they can’t use it anymore? If not, just add a layer of code with never ending ads :wink: