The problem HiKisan solves

Limits their ability to improve crop yields and increase profits, which results in a significant income gap between urban and rural areas.
Farmers in remote areas often lack access to educational resources, expert advice, and buyers for their products.
Farmers in remote areas often lack access As a result, many farmers struggle to make ends meet and are at risk of falling further behind economically.

Challenges we ran into

difficulty in embedding solidity into android native so we created an api to use it as backend for the payment.