Newsletter subscription platform Substack will begin taking advantage of an option on the U.S. App Store that allows users to make purchases outside of Apple’s in-app purchasing system. This functionality is permitted by a change to the App Store’s rules in May, as a result of Epic Games’ antitrust lawsuit against the tech giant.
Since then, a number of top apps have moved to offer in-app purchase links that point to their own websites, including Spotify, Patreon, and the Amazon Kindle app, among others.
In Substack’s case, support…

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