I like Apple. And I really like to develop native iOS Apps with Obj-C or now Swift, as it just feels right to me. But in the end you are standing there with a wonderful iOS App, for iOS phones and/or tablets and that's it. At this point you could be happy, but think about this: You are not targeting about 80% of the market! And if you want to reach a greater audience either why you or your customer wants it, or because you don't want to miss the income from the millions of possible users, you will need another app.
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