I Want Andriod Grocery Application with Web Admin Panel .

I Want Android Grocery Application with Web Admin Panel for increment or decrement of the product prices & add or remove the product or add new catagory & add promo code serial no etc .Web admin panel should be simple and easy for use. In android application For Sign up/sign in process Process, otp authencition with name email id required. when my customer place any order then they recieve message on given no. by customer and when order is deliverd to customer than they recieve message and mail with all items details..push notificaton for app installed customer,promo code option,online payment integration,online Track order on app,theme shopping etc required in andriod application. In web admin panel we have to set how much stock of a any product present and if i have only 10 items of a particular product then i have to option web panel for set stock quantity and if 10 items are sold then automatically i recieve a notification and that product will remove in customer application .Important thing about the app and admin panel should be work smoothly & fast with good database connectivity & appearence. App will be like grofers,peepertap,bigbasket,local bania etc .All content,apperance are different but functionality will be same as above app. Your unique ideas related to it than he/she can share your view . Thanks