Bing News Search Engine on Android platform

I have created an APP that is Bing News Search Engine on Android platform. This is using Bing News Search API provided by Microsoft Azure. This app can be reconfigured with 3 search query. The news will be refreshed for every time open the APP. It’s useful for the people to read news according to their custom search query every morning. I wish to accumulate the idea for this app for making marketable before I could launch my APP on codecanyon store. Thanks in advance.
My Demo is here