Android Developer challenge

Myself with few of my friends worked on the prototype version of a mobile application that we submitted for the Android Developer challenge. If you are reading this, I'd surely appreciate your feedback on this app. The app will fetch events from your calendar and provide suggestions for various events and notifies the user on the nearest place where he could purchase the suggested item. For eg, if today is Mr.X's girl friends birthday, then the app would recommend a gift(say 'diamond ring') and would notify the user on the nearest place from where he could buy this gift. Your suggestions and thoughts on this concept would be much appreciated.