Technologies used. 1. HTML5 with jQuery Mobile 2. Phonegap for Android 3. JSON REST Service for source data 4. HTML5 Local storage Functionality. 1. Form to search criteria 2. Ad listing page 3. Ad view page 4. Add / Remove Favorite functionality Actually this application is developed for testing purpose, but never go to live as client's requirement changed, and he then developed iPhone and iPad Api from JSON REST Service.