Hello,
Flipkart is a Marketplace app where sellers/vendors can list their products and customers can purchase those products. Do you want vendors and sellers to register on your app?
If you want a simple e-commerce app then there is no need of vendors to register as you will be listing your own products to sell through app.
Let us discuss the exact feature required by you so we can make a plan to work.
We are most comfortable to create an android app in both ways, marketplace as well as e-commerce. Let us know how you want it.
We are experts working on mobile apps and websites since 2013.
Awaiting your side positive reply.
Best Regards,