Usage limits do not apply to mobile APIs; see here:
https://developers.google.com/maps/faq#usage_apis
... the built-in map APIs for mobile platforms such as Android and iOS are not affected.
Please note that if you are developing a corporate application that is not accessible to the public, then this may be prohibited, see here:
https://developers.google.com/maps/faq#tos_commercial
However, not all commercial uses are permitted. For example, if your site meets any of the following criteria, you must purchase the appropriate Google Maps API for Business license:
- Your site is only available in your company or on your intranet.
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