How do I make my application available on the App Store only for iPhone 3G S or faster devices?

Question

I have an app that runs slowly on an iPhone 3G but is fast enough on an iPhone 3G S.

Is there a way to limit the app to be available only for iPhone 3G S and faster devices? I would like to avoid bad comments because 3G or even 2G users download it and then complain about it being too slow.

Answer 1

You can set minimum capabilities required to use your application by providing values for the UIRequiredDeviceCapabilities key in your application's Info.plist. In this case, I'd recommend using the opengles-2 capability, because all iOS devices with the post-iPhone 3G S faster hardware support OpenGL ES 2.0 and none of the ones before that do.

For more on these capabilities see Apple's documentation here.