AgamiPOS

AgamiPOS is a free POS app for small businesses and it works without internet

AgamiPOS is a product developed by Agami Technologies Pvt. Ltd., the intent of launching this product is to help small businesses manage their orders and sales, it is topped up by very intuitive user interface and capability to work completely offline.

We have to install the POS driver to print the bill

https://play.google.com/store/apps/details?id=com.fidelier.posprinterdriver