License to use Google Maps app that comes with iOS

In my application I have "get directions" from the user's current location. When a user taps the location he wants to go to. I do

[[UIApplcation sharedApplication]openURL:googleMapsURL];

Do I need some sort of signing identity, license from Google to send the user to the native Google Maps app when t开发者_JS百科he user wants directions if I want to send the App in to the Appstore?

No need of any Licence from Google or any Signing identity to get approved from AppStore. You can show direction in Native Google Maps app. by opening the following URL string:

http://maps.google.com/maps?saddr=SOURCE_COORDINATES&daddr=DESTINATION_COORDINATES.