I am currently using the google maps\' reverse geocoding API to convert long/lat received from an iPhone\'s CoreLocation API into city/state information on a google app engi
Above described terms are not present in revised terms of service. So even Apple co-ordinates should be able to reverse geocode from Google Maps API
According to Google's Terms of Service, you can only use the geocoder in conjunction with a Google Map.
You may not:
use or display the Content without a corresponding Google map, unless you are explicitly permitted to do so in the Maps APIs Documentation, the Street View API Documentation, or through written permission from Google (for example, you must not use geocodes obtained through the Service except in conjunction with a Google map, but the Street View API Documentation explicitly permits you to display Street View imagery without a corresponding Google map)