There is no Capture app beta version yet available for iOS. The beta only supports Android to fly with DJI Phantom 3 and Inspire 1.
We do not know when the iOS version will be released. It is currently being developed.
We will post updates on our forum when the beta will be available for iOS here:
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Please note that the development of the Android version started before the iOS version and iOS is still catching up with the features on Android.