CODEWITHSUNDEEP
cocoamacoslicensingstore
Vladu Bogdan
Vladu Bogdan

Reputation: 160

Check if Mac App was taken from Mac App Store with Cocoa

I'm trying to give a license to all the users who have bought my app from Mac App Store in order to give them faster updates. What i was thinking is to do an update for the Mac App Store version of the app that will let user register from within the application itself. But i'm having problems figuring out how to test if the application was really taken from Mac App Store and not from a pirated source. Is there a way to test if the user bought the app from AppStore. Apple does not release this info - as if it would - i could just test if that user email is in the list of people who downloaded the app from AppStore.

Thank you in advance for the help, Bogdan Vladu

Upvotes: 3

Views: 552

Answers (2)

Pierre Bernard
Pierre Bernard

Reputation: 3198

You could have the MAS version of your application copy the Apple-issued receipt to the Application Support folder.

The independent version could look there for a valid receipt. If there is, it will behave like the fully licensed version. If there is not, it would go to demo mode.

Upvotes: 3

user684934
user684934

Reputation:

If you're making enough money from this app to pay money for DRM and obsfucation, go for it. It might slow down the pirates enough for it to be a profit for you.

Otherwise, you're pitting your own time and skill against everyone who's interested in pirating your app. It's a losing battle, unless your app is really unpopular, in which case you've lost again.

In short, there's no algorithmic way of making sure. Code obsfucation is the way to go, and hope that the pirates don't find the "check-for-tampering" module.

Upvotes: 1

Related Questions