I have been using grofers since last 3 months and I am very satisfied with their service.
Grofers is both availaible on app and on website.The app loads fast.The app takes up your location when you t to order that includes vegetables, fruits, dairy product and everything you need for our grocery.After you pay for them or chose any other option for payment you get your delivery with the time they mention( maximum 3 hrs in my case) .
They also give offers like 20% discount and also you can pay from your paytm wallet or mobiwik wallet.And tje delivery is free if the total order amount is above 349.
I will definately recomend this to all.