So in my app users have an avatar and there is some functionality where users can use their own face scanned 3d model instead of the default avatar head. Through a third party app our users send us images so the 3d model can be generated (for a fee). Once the face scan is generated we assign it to the user's account where they can use it during play. The problem with using In-app-purchasing (IAP) in this instance is that the this is a custom feature that requires the user to take action on a third party app to complete the process anyway. It would be a hassle to have to make the user pay with IAP, then go outside the app to send their images, and once the model is generated (takes a few days) hope it was assigned to their proper account. If I did it where the payment, 3d model generation, and assigning the model to the user took place outside the app would that be a violation of Policy 3.1.1? Policy 3.1.1 If you want to unlock features or functionality within your app, (by way of example: subscriptions, in-game currencies, game levels, access to premium content, or unlocking a full version), you must use in-app purchase. Apps may not use their own mechanisms to unlock content or functionality, such as license keys, augmented reality markers, QR codes, cryptocurrencies and cryptocurrency wallets, etc.