You want to create or modify an android app ?
i can :
- create static app with simple pages.
- create dynamic app with user interactivity. - create dynamic app with local database.
- create dynamic app with web database.
- also work with JSON, XML, and other api
- transform your website into an android app. - modify your already existing app's code.
-testing your app.
Do not order before discus me the details about the work you want.