AppHub cofounder here -- I'm glad you brought this up. A developer who chooses to use AppHub is not depending on the platform. If AppHub goes away (which we ho

AppHub cofounder here -- I'm glad you brought this up. A developer who chooses to use AppHub is not depending on the platform. If AppHub goes away (which we hope will never happen!), our iOS SDK defaults to using the App Store build. Moreover, developers can implement their own "AppHub server" if they so choose, so they're not locked in to using our service. We're excited to open source the iOS SDK when we launch to the public so that developers can audit the code and assure themselves that they're not depending on our platform.