I have been ordering through grofers app for some time now.I found their product delivery to be of good quality.
The app is also very user friendly, as it is easy to search for the required products or groceries from all the major shops in and around your locality.
I have been getting discounts for all the products, also I got cashback on almost every order I paid through mobiquik app.Its definately a good app to rely on, in this busy scheduled life.