Is there a way to check original app purchase?

[Melvin Rivera]

I would like to move an app from fixed price to free with in app purchase. How can I check the original receipt of the app itself so I can unlock the in app purchase to all the users who paid for the app originally?

[Benjamin Mayo]

Full receipt introspection is not yet implemented in MerchantKit. This is definitely something I want to flesh out in the future. If you are looking for an interim solution, you could copy paste the ASN1 parsing methods into your own project and decode the receipt yourself.

[Melvin Rivera]

Thanks!

[Simon]

@melvitax I was wondering whether you've done that work in the meantime and would be able to share some of the steps needed as I've been struggling with this part! Thanks

[Melvin Rivera]

@s2imon Not yet but I plan on tackling it soon.

[Benjamin Mayo]

Hey, check out Merchant.receiptMetadataTask() on the latest release. This exposes the original application version.

[Kushagra Agarwal]

Hi,

I wanted to do something similar to OP but I can't get Merchant.receiptMetadataTask() to work.
When I run the following code:

let task = self.merchant.receiptMetadataTask()
task.start()
task.onCompletion = { result in
	switch result {
	case .success(let metadata):
		print(metadata.originalApplicationVersion)
	case .failure(let error):
		print(error.localizedDescription)
	}
}

The completion handler is never called. However, in the logs, I can see that the receipt was fetched successfully. Am I doing something wrong?

[Benjamin Mayo]

Did you try setting the completion handler before calling start()?

[Kushagra Agarwal]

That worked, I feel so stupid. Thanks for the quick help!