The last is to compute the “hash of your computer’s GUID. The first check is to simply look for the receipt. Non-MAS apps do not have this receipt checking.Īccording to Apple’s Developer documentation, there are five checks that an app can perform. When you launch an MAS app, the app checks the receipt to see if your computer has been authorized to run it. Also referred to as a certificate file, this is the essential item for implementing copy-protection. Inside the _MASReceipt folder is a file named receipt. This is the key difference between MAS apps and non-MAS apps. In the list that appears, you’ll see a folder named _MASReceipt. To do so, access the Contextual Menu for an MAS app and select Show Package Contents. To find the answer here, you need to peer inside an MAS app. MAS versions of apps: What’s the difference? How exactly are MAS apps different from other apps? How do the App Store and Mac OS X treat the distinctions? What Mac OS X software handles recognizing these differences? Perhaps most importantly, if you have a choice between an MAS and non-MAS version of the same app, which should you prefer? Read on… For example, using the Finder, you can copy a non-App Store app from one drive to another and it will work the same in both locations. Mac OS X can similarly tell if an app came from the Store or not. The Store app will offer to update MAS-acquired apps but not the same app acquired outside of the Store. Even if an MAS app is an apparent duplicate of a program you previously downloaded from the Web or installed from a disc, the apps are not exactly the same.Īs such, the Mac App Store app can recognize if an app was acquired from the Store. Apps you install from the Mac App Store (MAS) are different from other applications on your drive.
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January 2023
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