for those (including Apple) concerned about the impact of side loading apps on privacy and security–there is a web established solution, Web Apps.
Now thanks to Apple's approach to browser engines on iOS (slowly being changed thanks to a number of regulators around the world but *really* thanks to
@npub1kn4y...3asa) web apps are a worse experience in some ways on mobile (fewer APIs like NFC and BT) and a dire install experience.
But it is possible to deliver sophisticated web apps.
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