Hello Sir .. I had completed similar project before, developed several apps which connect to website database, so that website and app could sync real time. I usually use web service (RESTful API) to retrieve and save information into database with JSON encode for data parsing. I create some modules inside website framework which is used to access the database using PHP or ASP . It will be better if you have had API already :) .. I will do it in 30 days or more, it depends on how many database tables in your website. Please contact me as soon as possible to discuss further about details, Thank you.