isAppStore / isTestFlight incorrect

[ddaddy]

There still seems to be issues with the isAppStore and isTestFlight checks.

I have an app that is only distributed through TestFlight at the moment, and all signals show:

isAppStore: true
isDebug: false
isSimulator: false
isTestFlight: false

which is incorrect.

[Jeehut]

@ddaddy Thanks for bringing this up. I did some research and it turns out the method we use to detect App Store vs TestFlight is not the most reliable method and there seems to be a more reliable way in iOS 16 or later. I just tackled this in #252.

[ddaddy]

I did some testing myself, and Bundle.main.appStoreReceiptURL?.path.contains("sandboxReceipt") didn't report as expected.

What did your research discover?

[kkostov]

Hi @ddaddy, the fix of @Jeehut consists of changing the way the SDK detects TestFlight for apps running on iOS16+. Specifically, it will now adopt the AppTransaction.shared.environment API from StoreKit.