Finally we launched the MVP (the working model) using just Whatsapp & Google Sheets.Glist - is a grocery delivery platform where you could earn recurring discounts with the people you refer. You need to have an invitation from your friend to join and order. Whenever you give an invitation, and when that invited user buys through us, you get a referral commission for that sale. And you get that recurring, whenever that user buys.We have launched previously with a voice only shopping app, but when giving to users, it seems little difficult for shopping. So we are changing the app to the normal grocery app model right now.In between, we launched the MVP again, just using Whatsapp & Google sheets.Thank you for reading our story. 
Bibin Mohan