You have no choice if you want to serve IOS users, even if you do not need the app store to sell your product. The #1 questino for any IOS/Android exclusive app is "are you making an Andoid/IOS version"? And saying no because Google/Apple won't let you isn't a resolution that satisfies any party.
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How did you have no choice, did Apple threaten you or something?
Android is a competent competitor you could choose instead.
You have no choice if you want to serve IOS users, even if you do not need the app store to sell your product. The #1 questino for any IOS/Android exclusive app is "are you making an Andoid/IOS version"? And saying no because Google/Apple won't let you isn't a resolution that satisfies any party.