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How could I get identifierForVendor for any app (not developed by me)?

Time:02-24

My goal is to obtain the identifierForVendor for a specific app that is on the App Store and that I have NOT developed nor have access to. Lets say this app's bundle id is com.example.app

And just to preface, I was able to grab the identifierForVendor of com.example.app by sniffing the network requests. However, this is not an efficient or scalable way to get it for multiple devices. So, I am looking into other methods.

I have tried to get the identifierForVendor of com.example.app by creating a custom iOS app on Xcode with the bundle id com.example.test

I was hoping the identifierForVendor would be the same considering their documentation notes that apps with the same bundle id will have the same identifierForVendor, but it was not. It seems that the identifierForVendor is also based on the developer profile or something.

Is there anyway for me to get this identifierForVendor value of an external app?

CodePudding user response:

The short answer is that you cannot.

Apple does not provide any details on how this identifier is computed.

The identifier is unique for apps with the same initial bundle id components for a given developer on each device.

For example, apps with bundle ids com.example.app1 and com.example.app2, both from developer1 would have the same identifierForVendor on a given device.

An app with the bundle id com.example.app3 on the same device but from a different developer would have a different identifierForVendor; that is the for vendor bit.

Even if you use the same bundle ID prefix you won't get the same identifier as an app from another developer.

You should also note:

The value in this property remains the same while the app (or another app from the same vendor) is installed on the iOS device. The value changes when the user deletes all of that vendor’s apps from the device and subsequently reinstalls one or more of them.

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