According to the FAQ for Google Maps
http://code.google.com/apis/maps/iphone/terms.html
7.2 Service License. Google grants you a personal, worldwide, licensed, non-assignable and non-exclusive license to use the Service provided by Google in the manner permitted by the Terms.
7.3 Content License. Google grants you a personal, worldwide, free, non-assignable and non-exclusive license to access, use, publicly display and publicly display Content in the implementation of the Maps API, since the Content is provided in the Service and in a manner permitted by the Terms. In particular, you understand the following:
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