The end-user experience is definitely better on iOS. Gestures are ideally suited for navigating a touch device, especially as phone sizes continue to grow. It's a shame that Android cannot implement swipe-to-go-back because it conflicts with the navigation drawer UI.
But the development experience is not as impressive for Xcode. It is far slower than Android.
Deploying an app to the Play Store is ridiculously fast and frictionless while deploying to the App Store feels like installing Windows XP