Google recently updated the Google Maps SDK for iOS. The update does two things.
First, it adds several features and gives developers the ability to add things such as ground overlays, gesture control, and geodesic polylines to their own apps.
Second, Google made the SDK freely available to any developer who wants it. The original Google Maps for iOS SDK was made available in December, but required developers to register and wait for approval to use it. The new SDK can be downloaded from Google’s developer portal immediately.
The SDK lets third-party app developers embed Google Maps within their own applications. Prior to the availability of the Google Maps SDK, developers were stuck using Apple Maps for their apps.