Yes, I understand your point.
Can you please show me your website first so that I can have better understanding on that which kind of Ads you have for which you want the application?
Also please share with me the PSDs that you have created !
I have extensive experience in Admob implementation.
I can easily develop the Native Android App using Android-SDK with the Back-End Web-Services and Admin Panel. So that you can manage the Ads, Content and other things from Admin.
I have Extensive Experiences on Front-End and Back-End. I have worked with JSON format: the result of request to Web Service/ Web Site was in that format and I successfully parsed it in my app. RESTful services and the RESTful programming model. I have expertise with Push Messaging (GCM), Push Notification (APNS), XML Parsing, JSON, and GET/POST Method and so on.
I am fully confident to do your task as you desired and believe honesty and hard working on right path can make satisfy to you. Please provide me a chance to speak to you to further discuss this opportunity.
Best,
Vipin