Android is a software stack for mobile devices that includes an operating system, middleware and key applications.
The Android SDK provides the tools and APIs necessary to begin developing applications that run on Android-powered devices.
All entries were judged by a panel of experts in the fields of mobile devices, cellular telecommunications, software development or technology innovation.
[1] Developers from the United States accounted for one-third of the total applications while the rest came from countries such as Germany, Japan, China, India, Canada, France, UK, and many others.
The winners were selected after two rounds of scoring by thousands of Android users as well as an official panel of judges.
The ADC II contest was open only to applications that had not been made publicly available through the Android Market prior to August 1, 2009.
Android users were able to download the final top 20 applications in each category and evaluate them in the same manner as during the first round using the ADC 2 judging app.
Google announced the top winners of ADC II on November 30,[8][9] with SweetDreams, What the Doodle!?