not permitted without written permission from Denken. https://denkeni.medium.com/unpredictable-sandbox-environment-for-iap-auto-renewable-subscriptions-44461d7b1378 Unpredictable Sandbox Environment for IAP Auto-renewable Subscriptions Denken Chen, Confused iOS App Developer #WWDC20 #WorldWideDevelopersConfused20
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.
use their own mechanisms to unlock content or functionality, such as license keys, augmented reality markers, QR code’s, etc. Apps and their metadata may not include buttons, external links, or other calls to action that direct customers to purchasing mechanisms other than in-app purchase. Epic Games: Fortnite(2020/08)
The following apps may use purchase methods other than in-app purchase. Apps in this section cannot, either within the app or through communications sent to points of contact obtained from account registration within the app (like email or text), encourage users to use a purchasing method other than in-app purchase.
a user to access previously purchased content or content subscriptions (specifically: magazines, newspapers, books, audio, music, and video). Reader apps may offer account creation for free tiers, and account management functionality for existing customers. Kindle 條款(2011)、Spotify(2018)、Netflix(2018)、 Amazon Prime Video: only 15% tax(2020/07)
that operate across multiple platforms may allow users to access content, subscriptions, or features they have acquired in your app on other platforms or your web site, including consumable items in multi- platform games, provided those items are also available as in-app purchases within the app. Setapp for iOS (2020/08)
Free apps acting as a stand-alone companion to a paid web based tool (eg. VOIP, Cloud Storage, Email Services, Web Hosting) do not need to use in-app purchase, provided there is no purchasing inside the app, or calls to action for purchase outside of the app. HEY Email 條款(2020/06)、Fastmail(2020/06)、 WordPress(2020/08)