As far as I've seen, this isn't any sort of exclusive on Apple's App Store or Google's Play Store.
Free apps that allow users to access paid subscription content aren't required to accept payments for the subscription through the app.
> Offer subscriptions through your own website or app rather than the app stores. This allows you to process payments directly and avoid the 30% fees. However, you'll need to provide your own payment processing and customer support.
You can say it's easy, but if you try to make your app only take payments off platform you will fight with Apple for months.
Apple will gladly say they aren't preventing you from taking payment off platform and then make your life hell. They are big enough that this isn't some accident, this is 100% on purpose.
The whole LTT saga went on for nearly 2 years, you can watch all of it through their podcast: https://www.youtube.com/results?search_query=floatplane+appl...
AND they had the benefit of having millions of viewer leading to them getting an active account manager... Imagine some random company.
Free apps that allow users to access paid subscription content aren't required to accept payments for the subscription through the app.
> Offer subscriptions through your own website or app rather than the app stores. This allows you to process payments directly and avoid the 30% fees. However, you'll need to provide your own payment processing and customer support.
https://www.quora.com/Is-it-possible-to-avoid-paying-a-30-co...