Google Maps APIs in iPhone Paid App

I want to develop an iPhone Application which uses Google Places API ,The Google Distance Matrix API and The Google Directions API (http://code.google.com/apis/maps/documentation/webservices/) to find nearby places such as Restaurants,Hospitals etc.

Can I use these three APIs (Google Places API ,The Google Distance Matrix API and The Google Directions API) for free (with开发者_Python百科out a Maps API Premier license) in the following

1. Paid iPhone App
2. Free iPhone App which contains features that uses these three Google APIs and unlocks additional paid features that does not use these APIs, through in-app purchases.
3. Free iPhone App which unlocks additional paid features that uses these Google APIs through in-app purchases

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You are free to use the apis however a "powered by google" logo is required