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  1. Copilot 答案
    Development and monetization

    The iOS SDK (Software development kit) allows for the development of mobile apps on iOS. It is a free download for users of Mac personal computers. It is not available for Microsoft Windows PCs. The SDK contains sets giv… 展开

    Number of iOS applications

    On July 10, 2008, Apple's then-CEO Steve Jobs told USA Today that App Store contained 500 third-party applications for the iPhone and the iPod Touch, and of these 125 were free. Ten million downloads were recorded i… 展开

    App approval process

    Applications are subject to approval by Apple, as outlined in the SDK agreement, for basic reliability testing and other analysis. Applications may still be distributed "ad hoc" if they are rejected, by the author manu… 展开

    Privacy

    A privacy experiment conducted in 2019 by the Washington Post determined that third-party apps transmitted a host of personal data without the user's knowledge or consent, including phone number, email, exact location, d… 展开