This is actually somewhere Google has generally been more accepting than Apple. While Apple has been very harsh on both the app purchase and any in-app content

This is actually somewhere Google has generally been more accepting than Apple. While Apple has been very harsh on both the app purchase and any in-app content or services being through them, Google has been more lenient, historically, on the latter. Google has actually changed their minds on that, and will start being Apple-level strict in September of this year: https://arstechnica.com/gadgets/2020/09/google-announces-crackdown-on-in-app-billing-aimed-at-netflix-and-spotify/ https://arstechnica.com/gadgets/2020/09/google-announces-cra...