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I'm thinking of releasing a "PRO" (ad-free) version for my android application and I'm worried that the apk would be shared on blogs/crack sites for free distribution

is there a way to add some kind a purchase check? Since the app will be available for purchase only, there should be a way to check the user's purchase history maybe?

If the user hasn't purchased the app and is using it the app would show a message that they haven't bought it properly and would shut down.

Limpfro
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1 Answers1

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The thing that you are looking for is the App Licensing. Here is the link that can help you.

How can I implement Google Play Licensing for an Android app?

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CopsOnRoad
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