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On macOS it isn't an issue. But on iPhone all the browsers are just different user interfaces for Safari's rendering engine
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Oh wow. I didn’t know that. Is that true for brave too?
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Basically not possible to do JIT (needed for decent JS perf) on iOS for 3p apps (since that requires pages that are both writable and executable) and then on top of that Apple bans 3p browsers specifically in markets where they're allowed to.
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When submitting apps to Apple, all browser apps are required to and are basically glorified WKWebViews. Apple doesn't allow any other browser engines when submitting apps to app Store.
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At least on iOS, if I am not mistaken, you can only run the Safari Engine. Even if you run Firefox or Chrome, it is running Safari under the hood. That is what I understand. Please, correctme if I am wrong.
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At least in US, Firefox on iPhone is basically a reskin of the Safari engine.
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