Convert ASP.NET / SQL Server Site to Mobile App

Greetings - I currently have a fully functioning ASP.NET website on top of an MS SQL Server database. I want to convert this site to a mobile app, preferably something that users can download from Google Play or other mobile app sites. There are several tables and at least a dozen pages involved. This is a budgeting / financial site, so it uses ASP.NET membership and login tools, charting, and other rather complex features. I can give more details on request. You must have experience converting ASP.NET to mobile and show me examples, thanks!