Big Basket order on the Tata Neu app earns 5% more cash back (Neu Coins) as against an order directly placed on Big Basket App, everything else is the same.
The same logic applies to all the Tata Brands like Tata Cliq, Westside, 1MG, etc.
This is the only reason why I use Tata Neu. Plus their IPL offer of doing 500+ value transactions and earning extra coins after 2, 4, 6 etc transactions was also a good offer.
Td;dr - as long as they are bleeding money by giving extra discounts for using Tata Neu app, I will use it.