When I check the website, I see that web application using Google maps API have some limit. But what about using it in Android Application?
The official answer from Google:
http://code.google.com/apis/maps/faq.html#usagelimits
The Maps API usage limits apply only to the following APIs:
-Google Maps JavaScript API v2
-Google Maps JavaScript API v3
-Google Maps API for Flash
-Google Maps Image APIs
The Google Earth API, and native Maps APIs for mobile platforms such as Android and iOS are not affected. Use of the embed feature of Google Maps, and other Google products that offer an embed feature that includes a map, are not affected by these limits.