Easiest way to handle this and reduce piracy

I thought receipt validation would be too complex, so I skipped it in v1.0 of my app. After seeing a bunch of piracy I bought Receigen and used it for our next release. So far, it hasnt been cracked. I waited to leave this review to ensure it didnt cause any issues, and so far after 2 updates, its been great. Great app, and actually has saved us money (as our app uses a premium data provider that charges us). Thank you!

EpicDraws about Receigen