New App Store Review Guidelines: Gifts, Face ID, ARKit
No app may market itself as “including content or services that it does not actually offer” – specifically iOS-based virus and malware scanners, which have always been nonsense.
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Apps may now allow users to send money to others as a gift on two conditions. First, the gift must be a completely optional choice by the giver, and second 100% of the funds must go to the receiver of the gift.
Previously: Apple Wants 30% of Tips From Chinese Chat Apps.
Update (2017-09-19): See also: App Store Review Guidelines History.
Update (2018-01-16): Juli Clover:
Apple and Tencent, the company that owns the popular WeChat messaging app, have reached a deal that will let WeChat users resume sending in-app tips to content creators, reports The Wall Street Journal.